absoluteBLACK

Chainrings

CHAINRING BOLTS
Single and Double chainring bolts to mount Absoluteblack chainrings to the crank arms. Bolts have torx T30 interface for greater reliability. WHICH BOLTS SHOULD YOU ORDER? "SHORT" for: 104bcd Oval 34 / 36T 104bcd round 32 / 34 / 36 / 38T bashring "LONG" for: 110/4 & 110/5 bcd for outer+inner ROAD Oval chainrings 130/5 bcd for outer+inner ROAD Oval chainrings 104bcd Oval 26 / 28 / 32T 64bcd round 26 / 28 / 30T  94bcd Oval 30 / 32 / 34T all CX ROUND rings   IMPORTANT For 30T 104bcd - bolts are included in the price of chainring already. For ALL OVAL CX /Gravel 1X 110/5 and 110/4bcd chainrings - bolts are included in the price of chainring already. For XT M8000 and XTR M9000 - use original Shimano bolts that come with crank. For Sram Road Oval chainrings - use original Sram bolts that come with crank. If you change Road inner oval chainring only and keep outer as round - use original bolts.  IMPORTANT NOTE FOR CX ROUND RING USERS ONLY: Sometimes there may be a need to file down female nuts to achieve proper fit. This is because each crank has tabs of different thickness and it is not possible to make "one fit all" solution. Bolts itself are fine. MTB users will not have to do any modifications to bolts or nuts. 

€15.95*

OVAL 104 & 64BCD N/W CHAINRING
Absolute Black Premium 1X 104 & 64 bcd oval traction chainrings are designed for any cranks that use 104bcd mounting interface. This is the most common mounting standard for Shimano and other 4 arm cranks.The sizes 28-32T are not compatible with the Oval Guide. The spider would collide with the chain guide. FEATURES: Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending alternate wide and narrow teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on knees We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape. SPECS: Size (Weight): 26T (35g) (64BCD) , 28T (42g) (64BCD) 30T (36g) (104BCD) comes with special bolts and spacers  32T (41g), 34T (44g), 36T (53g) (104BCD) Compatibility: All cranks with 4x 104BCD interface. That means Shimano XT / Zee / Deore / SLX / XTR, Race Face, FSA, E13 and many more. 9, 10, 11 & 12spd compatible Material: CNC machined 7075 Txxx Aluminum. Long-lasting construction. Mud optimized. Chainline: 28T (64bcd) - 46mm ; 30T - 48mm ; 32T - 48.5mm ; 34 and 36T - 50mm Chain: 10 SPD / 11 SPD / 12 SPD Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending Color: BLACK 32T chainring has build-in 2mm spacers and threaded holes (M8x0.75) to accommodate this size on spider. Other sizes have regular 10mm holes. 30T chainring has build-in 2.5mm spacers and threaded holes (M8 / M5) to accommodate this size on spider. It also comes with bolts and spacers in the package: 2x M8 aluminium bolts T30 torx, 2x M5 steel bolts T25 torx and 2x eccentric spacers. This is a patent pending solution. If you wish to check for frame clearance with new oval ring, below you can find measurement of biggest dimension of the oval (tip to tip of tooth): 26T: 118mm ; 28T: 127mm ; 30T: 134mm ; 32T: 143mm ; 34T: 151mm

€66.95*

OVAL 94 BCD N/W chainring for SRAM
Our premium 1X Sram 94BCD Oval traction chainrings are designed for Sram X01, X1, GX, and NX cranks. They feature exactly the same oval shape as our other oval chainrings.FEATURES: Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending)  Greatly improves traction and climbing abilities  Unique Patent Pending alternate wide and narrow teeth profiles to keep your chain in place for minimum 12 months!  Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all  Reduces stress on knees  We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape. SPECS: Size (Weight): 30T (43g), 32T (48g), 34T (55g) Compatibility: 4 x 94mm. Holes are threaded for M8 regular "double" bolts (Original ones are too short) Material: CNC machined 7075 Txxx Aluminum. Long-lasting construction. Mud optimized. Chainline: 48mm Chain: 10 SPD / 11 SPD / 12 SPD Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending Color: BLACK Important: All 3 sizes have built-in M8 threaded standoffs to provide the ideal 1X chainline. They improve stock Sram chainline by 1mm. You will require longer than stock bolts. Get them here >> Bolts 

€69.95*

OVAL BOOST CINCH N/W CHAINRING FOR RACE FACE
Premium 1X RaceFace Boost 148 direct mount narrow wide Oval chainrings designed for CINCH system RaceFace uses to mount chainring directly to the crank. This version is for BOOST 148 specific bikes and FAT BIKES (when reversed). Optimized to work perfectly with Eagle 12spd. It also works great with 10/11spd. .We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape. Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on kneesSPECSSize (Mass +/-1g)28T: 54 g30T: 58 g32T: 62 g34: 69 g Compatibility: RaceFace Cinch system cranks. RF Next SL G4, Next SL, Next R, RF SIXC, RF Turbine, RF Atlas, AEFFECT, RIDE CINCH cranks. 9, 10, 11 and 12spd Eagle compatible.Material: cnc machined 7075 Txxx Aluminum. Long-lasting constructionOffset: 3mm Chainline: 52mm (BOOST) Chain: 9, 10, 11 und 12spd Eagle Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending How to mount OVAL BOOST CINCH N/W CHAINRING FOR RACE FACEYou need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this Sram chainring so you don't have to worry how to do it). Close all 3 bolts to about 5-7Nm.

€74.95*

OVAL BOOST N/W CHAINRING FOR SRAM
Color: Black | Teeth: 32T
The Original one and only absoluteBLACK premium Sram compatible Direct mount BOOST148 1X Oval narrow wide chainrings are designed for GXP, DUB and Long BB30 spindle cranks. Chainring is dedicated for Boost148 bikes ONLY. Converts a regular Sram crank into a Boost specific setup. (3mm offset). They are also 100-percent optimized for Eagle.This oval chainring with special 3mm offset converts any Sram crank into Boost148 specific setup needed in Boost equipped bikes. Boost and non-Boost Sram cranks are identical. All the offset is achieved by the chainring itself, so you can use any Sram crank for this conversion. Our regular OVAL chainrings for Sram cranks have 6mm offset whether this one has 3mm, but both chainrings look very similar.Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending alternate wide and narrow teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on knees Oval chainrings mastered to perfection, so you can get best possible advantage from the oval/elliptical shape.SPECSSize & Weight:28T: 50 g30T: 55 g32T: 59 g34T: 66 g Compatibility: SRAM AXS, XX1, XX1 Eagle, X01, X01 Eagle, GX Eagle, NX Eagle, SX Eagle, X1, X0, X9, X7, S2210, S1400, Descendant, Stylo, Truvativ AKA and all DUB cranks.Cane Creek eeWings. GXP and Long spindle BB30. BOOST148 bikes ONLY. 9, 10, 11 and 12spd Eagle compatible.Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction. Mud optimizedOffset: 3mm Kettenlinie: 52mm (SRAM BOOST148) Kette: 10 Fach / 11 Fach / 12 Fach Ovalität: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending How to mount OVAL BOOST N/W CHAINRING FOR SRAMYou need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this Sram chainring so you don't have to worry how to do it). Close all 3 bolts to about 5-7Nm.

€74.95*

OVAL CHAINRING FOR SHIMANO 96BCD XT M8000 / SLX M7000 N/W
The Premium 1X Oval 96BCD narrow wide chainring is designed for Shimano XT M8000, SLX M7000, M5100 & MT700 1x or 2x cranks Only. These chainrings fit Boost and non-boost bikes as correct offset is realized by the crank spider itself, not chainring. Bolts included.Oval chainrings mastered to perfection, so you can get best possible advantage from the oval/elliptical shape. Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on kneesSPECSSize (Mass +/-1g)30T: 44 g32T: 50 g34T: 60 g Compatibility: Fits Shimano XT M8000, SLX M7000, MT700 and Deore M6000, M5100 & M4100 cranksets 1X and 2X only. 9, 10, 11 and 12spd Eagle compatible. Boost and non-boostChainline: Dependent on the crank model (1 or B1/B2). Every crank model has different axle length, but same chainrings. Chain: 9, 10, 11 and 12spd EagleOvality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent PendingAll 3 sizes have built-in standoffs to provide the ideal 1X chainline.Use the stock Shimano M8 chainring bolts that come with crank. How to mount the Oval chainring:There is a small mark (triangle shaped) on the inner circumference of the chainring. This mark Must sit behind the crank arm. Mounting procedure is identical for SLX and XT cranks.

€69.95*

OVAL CHAINRING FOR SHIMANO XTR M9100 XT, SLX & DEORE
The Original one and only absoluteBLACK Premium, Shimano 12spd Hyperglide+ compatible Direct mount 1X Oval traction chainrings are designed for XTR M9100, XT M8100, SLX M7100 & Deore M6100 cranks. They feature the exact same excellent oval shape as rest of our oval chainring portfolio. This new type of direct mount chainring will make your Shimano crank looking great and perfectly mesh with Shimano 12spd Hyperglide+ chain. This particular chainring will ONLY work with CN-M9100, 8100, 7100 & 6100 Shimano 12spd Hyperglide+ chain due to different thickness of the teeth.Oval chainrings mastered to perfection, so you can get best possible advantage from the oval/elliptical shape. Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically All rings have built in threads for easy of mounting and reduction in weight Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on kneesSPECSSize (Mass +/-1g)28T: 48 g32T: 50 g34T: 55 g Compatibility: Fits to Shimano XTR M9100 , M9120, M9130, XT M8100, M8120, M8130 , SLX M7100, M7120, M7130, Deore M6100, M6120, M6130 & FC-MT900 cranksets. Works ONLY with CN-M9100, 8100, 7100 & 6100 Shimano 12spd Hyperglide+ chain.Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction! Type II anodizingChain: Works ONLY with CN-M9100, 8100, 7100 & 6100 Shimano 12spd Hyperglide+ chain.Offset: 6mm Chainline: Dependent on the crank model. Every crank model has different axle length, but same chainrings. Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent PendingIt's a Direct Mount chainring so please use original lockring to mount it on the crank. Always use a new chain with a new chainring HOW TO MOUNT ABSOLUTEBLACK OVAL CHAINRING FOR XTR M9100:Using Hollowtech II BB Removal Tool (like BBB BTL-116 ), carefully open the lockring that holds the chainring on the crank(normal threads). Once the lockring is removed, take off old chainring, re-grease the splines on the crank. Place new oval chainring with convex side to the crank. Chainring/crank has special splines that only fit one way. Close the lockring to 35-50Nm of force. Chainring is only compatible with CN-M9100, M8100, M7100 & M6100 Shimano 12spd Hyperglide+ chains. Using other chains may cause chain to drop very easily from the chainring due to thinner than usual teeth.

€79.95*

OVAL CINCH N/W CHAINRING FOR RACE FACE
The premium 1X RaceFace direct mount narrow wide Oval chainrings designed for CINCH system RaceFace uses to mount chainring directly to the crank. If you have 4 arm RF crank, look at 104bcd Oval ring. It has 6mm offset.Oval chainrings mastered to perfection, so you can get best possible advantage from the oval/elliptical shape. Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on kneesSPECSGröße & Gewicht28T: 54 g30T: 58 g32T: 62 g34: 69 g Compatibility: RaceFace Cinch system cranks. RF Next SL G4, Next SL, Next R, RF SIXC, RF Turbine, RF Atlas, AEFFECT, RIDE cinch cranks. 9, 10, 11 and 12spd Eagle compatible. Material: CNC-gefräste 7075 Txxx Aluminium. Langlebige Konstruktion. Schlamm optimiert. Offset: 6mm Chainline: 49mm  Kette: 10 Fach / 11 Fach / 12 Fach Ovality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending How to mount OVAL CINCH N/W CHAINRING FOR RACE FACEYou need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this Sram chainring so you don't have to worry how to do it). Close all 3 bolts to about 5-7Nm.

€74.95*

OVAL N/W CHAINRING FOR SRAM®
The Original one and only Absoluteblack premium Sram DUB / Gxp compatible Direct mount 1X Oval narrow wide chainrings are designed for Gxp, DUB and Long BB30 spindle cranks. Fits Sram 10/11spd XX1, X01, Eagle 12spd and others. Also replaces 76bcd chainrings to convert to direct mount solution. They are 100-percent optimized for Eagle. 6mm offset Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending alternate wide and narrow teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on knees Oval chainrings mastered to perfection, so you can get best possible advantage from the oval/elliptical shape.SPECS Size (Mass +/-1g):26T: 48 g 28T: 50 g 30T: 55 g 32T: 59 g 34T: 66 g Compatibility: SRAM AXS, XX1, XX1 Eagle, X01, X01 Eagle, GX Eagle, NX Eagle, SX Eagle, X1-1400, GX-1400, X0, X9, X7, S2210, S1400, Truvativ Descendant, Stylo and All DUB cranks, Cane Creek eeWings. GXP and Long spindle BB30 models (15mm spacer on drive side) 9, 10, 11 and 12spd Eagle compatible.Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction. Mud optimized.Offset: 6mm  Chainline: perfect 49mm (improved). 6mm offsetOvality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending How to mount Sram GXP® and BB30 Oval chainringYou need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this Sram chainring so you don't have to worry how to do it). Close all 3 bolts to about 5-7Nm.

€74.95*

OVAL RaceFace Boost DM for Shimano HG+ 12spd chain
Premium 1X RaceFace Boost 148 direct mount narrow wide Oval chainrings designed for CINCH system RaceFace uses to mount chainring directly to the crank. This version is for BOOST 148 specific bikes and FAT BIKES (when reversed). Optimized to work perfectly with Shimano HG+ 12 spd Chains.We mastered our oval chainrings to perfection, so you can get the best possible advantage from the oval/elliptical shape. Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on kneesSPECSSize (Mass +/-1g)28T: 54 g30T: 58 g32T: 62 g34: 69 g Compatibility: RaceFace Cinch system cranks. RF Next SL G4, Next SL, Next R, RF SIXC, RF Turbine, RF Atlas, AEFFECT, RIDE CINCH cranks. Shimano HG+ 12 spd Chains.Material: cnc machined 7075 Txxx Aluminum. Long-lasting constructionOffset: 3mm Chainline: 52mm (BOOST) Chain: CN-M9100, 8100 & 7100 Hyperglide+ 12spdOvality: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending How to mount OVAL BOOST CINCH N/W CHAINRING FOR RACE FACEYou need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this Sram chainring so you don't have to worry how to do it). Close all 3 bolts to about 5-7Nm.

€79.95*

OVAL Sram Boost DM for Shimano HG+ 12spd chain
This particular chainring will ONLY work with CN-M9100, 8100 & 7100 Shimano Hyperglide+ 12spd chain due to the different thickness & shape of the teeth. The Original one and only absoluteBLACK premium Sram compatible Direct mount BOOST148 1X Oval narrow wide chainrings are designed for GXP, DUB and Long BB30 spindle cranks. Chainring is dedicated for Boost148 bikes. 3mm offset.Finest design to provide excellent weight to strength ratio One of a kind special oval shape (Patent Pending) Greatly improves traction and climbing abilities Unique Patent Pending alternate wide and narrow teeth profiles to keep your chain in place for minimum 12 months! Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically They save weight because they don't need the spider and chainring bolts. The ability of installation of a smaller ring sizes that can't be mounted on regular spider. Superb quality and great look. You will ride faster using ovals. If you keep using round ring then others will get quicker. You will not "feel" the oval shape at all Reduces stress on knees Oval chainrings mastered to perfection, so you can get best possible advantage from the oval/elliptical shape.SPECSSize & Weight:28T: 50 g30T: 55 g32T: 59 g34T: 66 g Compatibility: SRAM AXS, XX1, XX1 Eagle, X01, X01 Eagle, GX Eagle, NX Eagle, SX Eagle, X1, X0, X9, X7, S2210, S1400, Descendant, Stylo, Truvativ AKA and all DUB cranks.Cane Creek eeWings. GXP and Long spindle BB30. BOOST148 bikes ONLY.Material: cnc machined 7075 Txxx Aluminum. Long-lasting construction. Mud optimizedOffset: 3mm Kettenlinie: 52mm (SRAM BOOST148) Kette: CN-M9100, 8100 & 7100 Shimano Hyperglide+ 12spdOvalität: Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending How to mount OVAL BOOST N/W CHAINRING FOR SRAMYou need to unscrew these 3 torx t-25 bolts from the crank. Then remove the spider+chainring combo you currently have there. Clean the splines and put some grease on them. Position the chainring in place (note there is only one way to fit this Sram chainring so you don't have to worry how to do it). Close all 3 bolts to about 5-7Nm.

€79.95*

PULLEYS FOR SRAM XX1 DERAILLEURS
AbsoluteBLACK precision pulleys for Sram 11spd derailleurs like XX1, X01, X1 and CX1. They are machined from Delrin which guarantees quiet work and great durability. Narrow-wide profiles aid to shifting precision. Each kit contains one upper and one lower pulley with dust covers. Size12TMass +/-1g22 g (set)ColorBlackMaterialDelrin construction, 606 2RS stainless bearing, 7075 T6 coversFinishanodizedCompatibilityFits only to Sram XX1, X01, X1 and Force CX1 rear derailleursChain compatibility11spd

€49.95*

Why Oval Chainrings Work

Oval chainrings work because a rider does not produce power evenly through a pedal stroke; they maximize the part of the stroke where power is produced and minimize resistance where it isn't. Oval rings make the spin cycle a lot smoother and are easier on legs while climbing. Believe it (or not), but a round chainring doesn't transfer torque to your rear wheel as smoothly as an Oval one. You will actually feel your stroke to be more "round" with an Oval shape than with a round chainring.

Why it matters

Traction, Traction and Traction. With oval rings rear tire traction improves greatly on loose and slippery terrain. Smoother power delivery to your rear wheel means that you will be able to maintain better, constant cadence; get less stress on the joints (knees) and therefore be able to keep certain level of effort for longer. This results in higher average speed. Moreover, 11 studies made by various Universities in the World show that using oval chainrings human legs utilize more muscle groups (compared to round one), but each of them to lesser degree. Load from pedaling an oval chainring is spread over greater muscle mass which in effect gives you the feeling of fresher and more relaxed legs. It is world's finest oval chainring backed by tens of thousands of customers.

What size should I choose?

Basically the same size you use with round rings but if you feel you are in between two sizes we recommend to choose the bigger one.