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QX2 Inner Chainring Black, 64-25t

At Interbike this past fall, Rotor finally released its much-anticipated mountain bike cranksets and compatible ovalized chainrings. Rotor took its road-winning technology and parlayed that success into rings that work on the rough trails and surfaces that usually cause stutters in the efficiency of your power output. The QX2 is designed as the inner chainring for a standard 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better and experience smoother torque and better grip off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Inner Chainring comes in sizes: 60-22t, 60-25t, 60-26t, 60-27t, 64-25t, 64-27t, 74-25t, 74-27t, 80-26t, and 80-27t. The ring comes in the color Black.

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Competitive Cyclist
$115.00 See It
QX2 Inner Chainring Black, 74-27t

At Interbike this past fall, Rotor finally released its much-anticipated mountain bike cranksets and compatible ovalized chainrings. Rotor took its road-winning technology and parlayed that success into rings that work on the rough trails and surfaces that usually cause stutters in the efficiency of your power output. The QX2 is designed as the inner chainring for a standard 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better and experience smoother torque and better grip off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Inner Chainring comes in sizes: 60-22t, 60-25t, 60-26t, 60-27t, 64-25t, 64-27t, 74-25t, 74-27t, 80-26t, and 80-27t. The ring comes in the color Black.

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Competitive Cyclist
$115.00 See It
QX2 Inner Chainring Black, 80-27t

At Interbike this past fall, Rotor finally released its much-anticipated mountain bike cranksets and compatible ovalized chainrings. Rotor took its road-winning technology and parlayed that success into rings that work on the rough trails and surfaces that usually cause stutters in the efficiency of your power output. The QX2 is designed as the inner chainring for a standard 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better and experience smoother torque and better grip off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Inner Chainring comes in sizes: 60-22t, 60-25t, 60-26t, 60-27t, 64-25t, 64-27t, 74-25t, 74-27t, 80-26t, and 80-27t. The ring comes in the color Black.

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Competitive Cyclist
$115.00 See It
QX2 Outer Chainring Black, 110-38t

Rotor took its road-winning technology and finally released ovalized mountain bike rings, as well as single-, double-, and triple-specific REX mountain bike cranksets this past fall. The QX2 is designed as the outer chainring for a 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better, experience smoother torque, and grip better off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Outer Chainring comes in sizes: 104-38t, 104-40t, 110-36t, 110-38t, 110-39t, 110-40t, 120-38t, and 120-40t. Each ring comes in the color Black.

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Competitive Cyclist
$150.00 See It
QX2 Outer Chainring Black, 120-40t

Rotor took its road-winning technology and finally released ovalized mountain bike rings, as well as single-, double-, and triple-specific REX mountain bike cranksets this past fall. The QX2 is designed as the outer chainring for a 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better, experience smoother torque, and grip better off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Outer Chainring comes in sizes: 104-38t, 104-40t, 110-36t, 110-38t, 110-39t, 110-40t, 120-38t, and 120-40t. Each ring comes in the color Black.

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Competitive Cyclist
$150.00 See It
QX2 Inner Chainring Black, 74-25t

At Interbike this past fall, Rotor finally released its much-anticipated mountain bike cranksets and compatible ovalized chainrings. Rotor took its road-winning technology and parlayed that success into rings that work on the rough trails and surfaces that usually cause stutters in the efficiency of your power output. The QX2 is designed as the inner chainring for a standard 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better and experience smoother torque and better grip off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Inner Chainring comes in sizes: 60-22t, 60-25t, 60-26t, 60-27t, 64-25t, 64-27t, 74-25t, 74-27t, 80-26t, and 80-27t. The ring comes in the color Black.

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Competitive Cyclist
$115.00 See It
QX1 Chainring Black, 28t

Rotor is well known for its ovalized road chainrings and its cranksets. Now it has taken this technology and applied it to mountain biking with a series of chainrings designed to get you up and over faster. The QX1 is the first ovalized chainring designed for a 1x drivetrain. Ovalized chainrings are not new. They actually appeared briefly years ago under the name Biopace but failed to attract a strong following. Not to be put off, Rotor took a new eye to the concept and redesigned the oval ring. What does an oval ring do? Well, they are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. The rings are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX1 has an ovality of 12. 5%, which helps you accelerate better, and experience smoother torque and better grip off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX1 Chainring comes in sizes 28-tooth to 36-tooth and in the color Black.

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Competitive Cyclist
$125.00 See It
QX2 Outer Chainring

Rotor took its road-winning technology and finally released ovalized mountain bike rings, as well as single-, double-, and triple-specific REX mountain bike cranksets this past fall. The QX2 is designed as the outer chainring for a 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better, experience smoother torque, and grip better off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Outer Chainring comes in sizes: 104-38t, 104-40t, 110-36t, 110-38t, 110-39t, 110-40t, 120-38t, and 120-40t. Each ring comes in the color Black.

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Competitive Cyclist
$150.00 See It
QX2 Outer Chainring Black, 104-40t

Rotor took its road-winning technology and finally released ovalized mountain bike rings, as well as single-, double-, and triple-specific REX mountain bike cranksets this past fall. The QX2 is designed as the outer chainring for a 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better, experience smoother torque, and grip better off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Outer Chainring comes in sizes: 104-38t, 104-40t, 110-36t, 110-38t, 110-39t, 110-40t, 120-38t, and 120-40t. Each ring comes in the color Black.

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Competitive Cyclist
$150.00 See It
QX1 Chainring

Rotor is well known for its ovalized road chainrings and its cranksets. Now it has taken this technology and applied it to mountain biking with a series of chainrings designed to get you up and over faster. The QX1 is the first ovalized chainring designed for a 1x drivetrain. Ovalized chainrings are not new. They actually appeared briefly years ago under the name Biopace but failed to attract a strong following. Not to be put off, Rotor took a new eye to the concept and redesigned the oval ring. What does an oval ring do? Well, they are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. The rings are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX1 has an ovality of 12. 5%, which helps you accelerate better, and experience smoother torque and better grip off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX1 Chainring comes in sizes 28-tooth to 36-tooth and in the color Black.

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Competitive Cyclist
$125.00 See It
QX2 Outer Chainring Black, 110-36t

Rotor took its road-winning technology and finally released ovalized mountain bike rings, as well as single-, double-, and triple-specific REX mountain bike cranksets this past fall. The QX2 is designed as the outer chainring for a 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better, experience smoother torque, and grip better off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Outer Chainring comes in sizes: 104-38t, 104-40t, 110-36t, 110-38t, 110-39t, 110-40t, 120-38t, and 120-40t. Each ring comes in the color Black.

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Competitive Cyclist
$150.00 See It
QX2 Outer Chainring Black, 104-38t

Rotor took its road-winning technology and finally released ovalized mountain bike rings, as well as single-, double-, and triple-specific REX mountain bike cranksets this past fall. The QX2 is designed as the outer chainring for a 2-ring mountain bike drivetrain. Ovalized chainrings are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined with a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The QX2 features an ovality of 10%, which helps you accelerate better, experience smoother torque, and grip better off road. Additionally, the alternating thick and thin tooth profile keeps your chain from dropping -- even in the roughest conditions. This eliminates the need for a chain guide. The Rotor QX2 Outer Chainring comes in sizes: 104-38t, 104-40t, 110-36t, 110-38t, 110-39t, 110-40t, 120-38t, and 120-40t. Each ring comes in the color Black.

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Competitive Cyclist
$150.00 See It
O-14 4 Arm Chainring 110mm BCD

With the introduction of testing power and measuring exact watts created in various phases of the pedal stroke, cyclists have been looking for ways to reap every watt possible out of every degree. Osymetric has the latest theory in how to transfer the most power from your legs to the drivetrain with its dual-cam-designed chainrings. Essentially, even though cyclists are taught to "round out" their pedal strokes, very few actually are able to fully execute it well. And while an ovalized ring maximizes power for part of the stroke, the dual-cam more effectively minimizes the dead spot in the pedal stroke. The Osymetric chainring is the brainchild of French engineer Jean-Louis Talo. The radically-shaped chainrings use a dual-cam design, with each cam lobe corresponding to the most powerful part of the pedal stroke: the downstroke. The design increases the gear inches of the chainring at the point where you're able to apply the most force, but as you transition to your least powerful part of the stroke, or dead spot, the chainring reduces in size to speed you back into the power part of the stroke. For instance, an Osymetric 52-tooth chainring would be similar to a 55-tooth in the largest portion of the cam, then gradually reducing to a 49-tooth over the dead spot. This translates to a claimed 3% increase in speed. As a note, to install the chainrings, you'll need to make adjustments to the derailleur height and width with the included screw. And you'll also need to spend time fine tuning the rear derailleur. The first ride may seem a bit awkward, but after a few times out you'll feel more power in your stroke and be less aware of any inconsistencies in chainring shape. The O-14 is for the new four-arm Shimano Dura-Ace and Ultegra cranksets. They are available as small and large chainrings in 38t, 42t, 50t, 52t, and 54t.

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Competitive Cyclist
$164.50 See It
Road Inner Q-Ring One Color, 42T/130mm

Rotor Road Inner Q-Rings are designed to capitalize on the strongest part of your pedal stroke and minimize the negative effects of the weak portion known as "dead spots." The Q-Rings have a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects of your biomechanics, pedaling style, and bike geometry. And aside from those benefits, the shift pins and ramps on the Q-Rings have been redesigned to provide faster shifting. The Q-Ring's oval shaping smoothes the pedal stroke through the dead spots and takes advantage of your power potential at the optimum time -- in the power zone. The multiple mounting hole system is called OCP (Optimum Chainring Positioning) and it allows each rider to maximize the benefit of the Q-Rings. The long axis of the oval chainring should be vertically aligned in the power zone when the crankarms are at or just below horizontal. This position gives the rider maximum leverage, and therefore maximum torque transmission to the rear wheel. Inversely, the short axis of the chainring is aligned so that it nears the vertical when the crankarms are also close to vertical. The short axis of the oval creates a shorter lever when you make less power. The effect is a subtle acceleration of the legs through the top and bottom of the stroke and less muscle strain at these traditionally weak points in the cycle. With Q-Rings, you'll put more power to the ground while taxing your muscles less. Rotor Road Inner Q-Rings are made with hard anodized CNC machined 7075 aluminum. They are available with a black finish. They fit Rotor Agilis and 3D Cranksets and are also compatible with most every crankset and BCD (bolt circle diameter) currently available -- 110mm compact, 113mm Campagnolo compact, 130mm standard, and 135mm Campagnolo standard. The 113mm and the 135mm Campagnolo-specific rings will work with 10-speed Ultra-Torque cranksets, but they are not compatible with 2011 11-speed cranks due to a new fastener design. ...

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Competitive Cyclist
$110.00 See It
QXL Outer Chainring Black, 11 SPD Shimano-53t

Rotor Bike Components' success with ovalized chainrings is evident, as it continues to expand its line by incorporating varying levels of ovality to its rings. Doing so has proven to optimize pedaling efficiency for different rider profiles. The QXL Outer Chainring was designed for riders who ride on the rivet and race in conditions that require extra high power output. Time-trials, sprints, and breakaways often require extended periods of high power output. And while Rotor's Q Rings are capable of handling the power load and torque, the QXL rings feature 16% ovalization as compared to the Q-Rings' 10%. What does an oval ring do you ask? Well, they are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined out of 7075 aluminum and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The higher ovality of the QXL rings makes them ideal for the high cadence, high power rider such as a sprinter. QXL rings feature five OCP points. These points allow you to position the rings to maximize efficiency of your individual riding style. As mentioned, you "clock" them, meaning that you turn them in relationship to the spider so that the dead spot in your pedal stroke is minimized. Not every rider will have a dead spot at exactly the same spot on the stroke. The Rotor QXL Outer Chainring is available in the sizes 110mm/52t, 110mm/53t, 130mm/53t, 130mm/54t, and Shimano 46t, 52t, 53t, and 54t. They come in Black.

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Competitive Cyclist
$220.00 See It
Rochester Series Red Box Compressor

Guitar Pedals & Effects - Plug into vintage tone! The Red Box from Whirlwind is a dead-on revival of the handwired classic from the 1970s, only this one's got a 9-volt AC adapter input and features hardwire bypass. You'll love dialing in a range of compression tones — with deliciously crisp attack on clean guitar, and totally lush sustain on your solos. This pedal has serious classic vibe. Michael Laiacona, president of Whirlwind, has been crafting amazing effects boxes for years — in fact, he was the cofounder of MXR. You've got to hear the Red Box.Whirlwind The Red Box Handwired Compressor Effects Pedal at a Glance:Vintage-styled compression from this handwired "Red" boxRochester Series, designed by Michael Laiacona — cofounder of MXRVintage-styled compression from this handwired "Red" boxThe tones in the Red Box compressor are truly classic, and can be heard in almost every great rock recording of the '70s and '80s. The Red box is known best for its crisp percussive attack when applied to a clean guitar, as well as its lush, rich sustain when soloing. Rochester Series, designed by Michael Laiacona — cofounder of MXRLife-long gear tinkerer Michael Laicona was the cofounder of MXR — so he certainly knows effects pedals. Here, you've got the brain behind a series of classic, near-legendary pedals, now available at a really great value. The difference between these pedals and their vintage counterparts is that the Whirlwind Rochester Series, including the Red Box, features a 9-volt AC adapter input and is 100% true bypass.Whirlwind The Red Box Handwired Compressor Effects Pedal Features:Handwired Compressor Effects PedalMade in the U.S.A.Features a 9-volt AC Adapter Input100% True BypassDesigned by Michael Laicona, Co-founder of MXRPart of the Whirlwind Rochester SeriesTake your tone in a classic direction with the Whirlwind Rochester Series Red Box! Compressors and EQ

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Sweetwater
$129.00 See It
O-14 5 Arm Chainring 110mm BCD

How many times have you heard the phrase, "Scrape your cleat 'across' the bottom of your pedal stroke"? Or, "Round out your stroke"? It's all in the name of getting the most power to the drivetrain throughout every phase of the pedal stroke. Osymetric has designed a chainring that addresses the deficiencies in the stroke, so you spend more time riding and less time analyzing every degree of every stroke. The O-14 5 Arm 110mmBCD Chainring will have you pedaling around other riders' "circles." While an ovalized ring maximizes the power part of the stroke, the dual-cam more effectively minimizes the dead spot in the pedal stroke. The Osymetric chainring is the brainchild of French engineer Jean-Louis Talo. The somewhat oddly-shaped chainrings use a dual-cam design, with each cam lobe corresponding to the most powerful part of the pedal stroke: the downstroke. The design increases the gear inches of the chainring at the point where you're able to apply the most force, but as you transition to your least powerful part of the stroke, or dead spot, the chainring reduces in size to speed you back into the power part of the stroke. For instance, an Osymetric 52-tooth chainring would be similar to a 55-tooth in the largest portion of the cam, then gradually reducing to a 49-tooth over the dead spot. This translates to a claimed 3% increase in speed. While having a rounded pedal stroke is nice, most riders never perfect it. Osymetric assists where human physiology fails. To install the chainrings, you'll need to make adjustments to the derailleur height and width, with the included screw. And you'll also need to spend time fine tuning the rear derailleur. The first ride may seem a bit awkward, but after a few times out you'll feel more power in your stroke and be less aware of any inconsistencies in chainring shape. The Osymetric O-14 5-Arm Chainring fits any 5-bolt crankset with a 110mm BCD. It is available in 38t, 50t, and 52t.

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Competitive Cyclist
$164.50 See It
Outer Aero Q-Ring

Take a close look at some of the pro road machines out there these days: Wiggins' Pinarello Dogma, Van Lierde's Cervelo, Vos' Giant. What do they all have in common? Aside from being piloted by world-podium-topping athletes, these bikes are each equipped with oblong chainrings from Rotor. Why? The ovalized shape of rings like the Rotor Outer Aero Q-Rings lends more leverage to the pedal stroke, extracting more power from your legs and more efficiency at the same time from each rotation. The effect felt on the bike is a smoothing of the pedal stroke, less exertion to achieve the same speed and power output, and a reduction in that "dead spot" you feel during each stroke. The particular chainrings you see here are outer road chainrings. Both 50- and 52-tooth models are available in a 110BCD for Shimano and SRAM drivetrains, while the 53-tooth version available has a 135BCD and is compatible with Campagnolo drivetrains only. They are compatible for use with 10- or 11-speed systems. For best performance, Rotor recommends running Outer Q-Rings in tandem with Inner Q-Rings. For maximum benefit of the Q-Ring design, install the chainring so that the long axis of the ring aligns with the crankarm.

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Competitive Cyclist
$175.00 See It
QXL Inner Chainring

Rotor's ovalized chainrings have been shown to increase the efficiency of virtually any rider's pedal stroke. While the standard Q rings are the perfect all-around ring, if you race in conditions that demand near peak power output for extended periods, such as time trials or sprints, the more pronounced QXL Inner Chainring should be taken into consideration. While Rotor's Q Rings are capable of handling the power load and torque necessary for time trials and sprints, the QXL rings feature 16% ovalization as compared to the Q-Rings' 10%. This more extreme ovality helps to further increase the efficiency of your pedal stroke during high cadence/high power output. They are essentially designed to maximize the efficiency of your pedal stroke by prolonging the power zone and minimizing dead spots. They are machined out of 7075 aluminum and, with multiple mounting holes, can be "clocked" to maximize the effects for your biomechanics, pedaling style, and bike geometry. The higher ovality of the QXL rings makes them ideal for the high cadence, high power rider such as a sprinter. QXL rings feature five OCP points. These points allow you to position the rings to maximize efficiency of your individual riding style. As mentioned, you "clock" them, meaning that you turn them in relationship to the spider so that the dead spot in your pedal stroke is minimized. The Rotor QXL Inner Rings match with the QXL Outer Rings. They are available in the sizes 110mm/36t, 110mm/38t, 130mm/41t, 130mm/44t, and Shimano 36t, 38t, and 44t. They come in Black.

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Competitive Cyclist
$110.00 See It
Outer Aero Q-Ring Black, 53Tx135BCD Campy

Take a close look at some of the pro road machines out there these days: Wiggins' Pinarello Dogma, Van Lierde's Cervelo, Vos' Giant. What do they all have in common? Aside from being piloted by world-podium-topping athletes, these bikes are each equipped with oblong chainrings from Rotor. Why? The ovalized shape of rings like the Rotor Outer Aero Q-Rings lends more leverage to the pedal stroke, extracting more power from your legs and more efficiency at the same time from each rotation. The effect felt on the bike is a smoothing of the pedal stroke, less exertion to achieve the same speed and power output, and a reduction in that "dead spot" you feel during each stroke. The particular chainrings you see here are outer road chainrings. Both 50- and 52-tooth models are available in a 110BCD for Shimano and SRAM drivetrains, while the 53-tooth version available has a 135BCD and is compatible with Campagnolo drivetrains only. They are compatible for use with 10- or 11-speed systems. For best performance, Rotor recommends running Outer Q-Rings in tandem with Inner Q-Rings. For maximum benefit of the Q-Ring design, install the chainring so that the long axis of the ring aligns with the crankarm.

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Competitive Cyclist
$175.00 See It
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