Hope Retainer Narrow Wide ChainringDesigned to remove the need for a chainguide on your bike (when combined with a clutch style rear mech), Hope's narrow wide chainring securely holds your chain in place on the roughest trails. Manufactured from a CNC machined 7075-T6 aluminium, it brings you the perfect blend of low weight, strength, and compatibility with 9, 10 and 11 speed drivetrains. Its hard anodised finish increases its longevity and durability.Features: Bolt Circle Diameter (BCD): Separate 4x96mm and 4x104mm options Available as a 30t,32t, 34t and 36t Chainring size No need to run chain device Designed to work with conventional 1x9, 10 or 11 speed set ups Weight: from 41gBuy Hope Retainer Narrow Wide Chainring from Chain Reaction Cycles, the World's Largest Online Bike Store.
Hope Retainer Narrow Wide ChainringDesigned to remove the need for a chainguide on your bike (when combined with a clutch style rear mech), Hope's narrow wide chainring securely holds your chain in place on the roughest trails. Manufactured from a CNC machined 7075-T6 aluminium, it brings you the perfect blend of low weight, strength, and compatibility with 9, 10 and 11 speed drivetrains. Its hard anodised finish increases its longevity and durability.Features: Bolt Circle Diameter (BCD): Separate 4x96mm and 4x104mm options Available as a 30t,32t, 34t and 36t Chainring size No need to run chain device Designed to work with conventional 1x9, 10 or 11 speed set ups Weight: from 41gBuy Hope Retainer Narrow Wide Chainring from Chain Reaction Cycles, the World's Largest Online Bike Store.
Hope Retainer Narrow Wide ChainringDesigned to remove the need for a chainguide on your bike (when combined with a clutch style rear mech), Hope's narrow wide chainring securely holds your chain in place on the roughest trails. Manufactured from a CNC machined 7075-T6 aluminium, it brings you the perfect blend of low weight, strength, and compatibility with 9, 10 and 11 speed drivetrains. Its hard anodised finish increases its longevity and durability.Features: Bolt Circle Diameter (BCD): Separate 4x96mm and 4x104mm options Available as a 30t,32t, 34t and 36t Chainring size No need to run chain device Designed to work with conventional 1x9, 10 or 11 speed set ups Weight: from 41gBuy Hope Retainer Narrow Wide Chainring from Chain Reaction Cycles, the World's Largest Online Bike Store.
Rotor QX1 Narrow Wide Oval MTB Chain Ring For ultimate in single ring performance, throw the new Rotor QX1 oval mountain ring on your REX 1 cranks. You’ll be using the same chainring set up that led Christoph Sauser to victory at the Cross Country Marathon World Championships.Read the interview with Cedric Gracia on Oval Chainrings here.Ovalized chainrings for maximum performance Introducing the new QX1 chainring, already XCM world champion under Christoph Sauser. The QX1 has an alternating wide/narrow tooth profile which prevents the chain from dropping in the worst conditions even without a chain guide. Installation does not require disassembling the crankset from the bike, making ideal gear selection easier.Why Q-Rings? Q-Rings boost your performance by varying drivetrain resistance during pedaling in line with your legs natural strengths and weakness. They make better use of the strongest muscle groups (increasing positive work) and compensate for the weaker zones in the pedaling stroke (reducing negative work).PERFECT SPINQ-Rings make better use of your strongest muscles The muscles recruited during pedalling, their relative strength during pedalling and the torque produced as a crankset rotates are shown in the figures below. From these graphs, it is clear that a round chainrings’ constant level of resistance interferes with optimal pedalling dynamics. A Q-Ring gives a silky-smooth “perfect spin” by smoothening out torque variations and making better use of your strongest muscles.RIDE FASTERPeer reviewed scientific studies Peer-reviewed scientific research has shown that Q-Rings offer a clear increase in performance compared to round chainrings. Elite level cyclists saw a 1.6 sec advantage in a 1KM TT study, generating 27W more power. For comparison, 60mm aero wheels often claim 1.5-1.8 sec/km and 16W savings. What does this mean when you’re riding? You will discover increased endurance, realize explosive sprints and see a newfound tenacity in climbs. You will find that you can stick with the hardcore group that usually drops you. You will become an improved version of yourself, ready to set new PR’s and discover a new depth of performance. Triathletes will notice reduced strain in the bike split and better run split performance.RESEARCH OUTCOMEIncreased speed, reduced consumptionQ-Ring sprints were faster (-1.6 sec & 0.7 kph-1.8%) and generated more power (+26.7W-6.2%)Reduced oxygen consumption and heart rate.Q-RINGS INCREASE PERFORMANCEYour effort has its payoffImmediate performance increase on switching from round rings to Q-Rings. And vice-versa.It also appears that the more effort a cyclist exerts, the greater the benefit of Q’s.PEDALLING SMOOTHNESSQ-Ring-Round Ring Comparison Far from feeling unusual, a Q-Ring feels much rounder than a round ring. A SpinScan analysis visualize a cyclists power delivery, with a bar graph indicating the variation from maximum to minimum output and a polar graph showing the rotating shape of the power profile. By comparing the left hand Round chainring SpinScan and the right hand Q-Ring SpinScan below, one can see that Q-Ring graphs are clearly smoother (less variation in torque in the bar graph) and fuller (less of a peanut shape at the weakest point). OPTIMIZED PEDALLINGSpinScan When one projects a polar plot of a typical SpinScan over the varying drivetrain resistance of a 53t Q-Ring during its rotation, the value of a Q-Ring is clearly visible: Maximum power is met with a “56.5t” Time trial sized chainring diameter and minimum power is met with a “50.4” compact size chainring diameter. This variation creates the “perfect spin” we all aspire to, that simply isn’t possible with round chainrings. This is because Q-Rings compensate for the weakest zone of the pedalling stroke and maximize use of the most powerful zone.OCPOptimum Chainring Position You can micro adjust the position of your Q rings to suit your riding style. Q-Rings use your leg muscles at a different rate than round rings, thereby changing your intramuscular coordination of motor units. Thanks to the OCP (Optimum Chainring Position) of the Q-Ring, you will find your best position seeking both comfort and efficiency. A standard crank in combination with the OCP of the Q-Rings, allows approximately 5 degrees of adjustment.Pedal comfortably in all cycling positions The OCP (Optimum Chainring Position) of the Q-Ring allows you to pedal comfortably in all cycling positions:SittingStandingClimbingSprintingELITE ATHLETES CHOSE TO RIDE Q-RINGSAs a personal choice Professionally, athletes who have chosen to ride Q-Rings have put to rest any doubts about their performance by winning two grand tours, more than 25 Ironman races and over 20 UCI elite Road, MTB and CX world champion titles. Features:The QX1 has an ovality of 12.5% to help the you accelerate better, feel less muscle fatigue and experience smoother torque and better grip off road.The alternating thick/thin tooth profile keeps your chain from dropping in even the worst conditions, eliminating the need for a chain guide.It is compatible with Rotor Rex 1.1 and Rex 2.1, SRAM XX1 and Specialized cranks thanks to crank specific spiders from Rotor. BCD: 76mmPlease note: QX1 rings have a unique BCD and will need adaptor spiders (not included) to fit Specialized or SRAM single cranksRotor chainrings & road cranks compatibility chart (.PDF) - Here you will find the specific Rotor chainring designed to work with your crank.Buy Rotor Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
BLACK by AbsoluteBlack Narrow Wide Single ChainringThe ideal solution for your Shimano crankset, this Narrow Wide Single Chainring from Black by AbsoluteBlack benefits from a durable, yet lightweight aluminium construction. Its streamlined design ensures the tooth profile holds the chain snug, allowing you to ditch the chain guide, for a smooth and even ride, you can count on. Features:Designed in the UK, manufactured in PolandUse: Mountain Bike (MTB)Bolt Circle Diameter (BCD): 104mmMaterial: 7075 AluminumCompatibility: 1x9-/10-/11-/12-Speed (Eagle compatible) or Singlespeed setupsWeight: 37g (32T)/46g (34T)Manufacturer Reference Codes: Black 104mm 32T: ABNWOV104X32BK; Black 104mm 34T: ABNWOV104X34BK; Black 104mm 36T: ABNWOV104X36BK; Black 94mm 30T: ABNWOV94X30BK; Black 94mm 32T: ABNWOV94X32BK; Black 94mm 34T: ABNWOV94X34BK; Black 104mm 30T: ABNWOV104X30BK; Red 104mm 32T: ABNWOV104X32RD; Red 94mm 30T: ABNWOV94X30RD; Red 104mm 34T: ABNWOV104X34RD; Red 104mm 36T: ABNWOV104X36RD; Red 94mm 32T: ABNWOV94X32RD; Red 94mm 34T: ABNWOV94X34RD; Red 104mm 30T: ABNWOV104X30RDBuy BLACK by absoluteBLACK Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
BLACK by AbsoluteBlack Narrow Wide Single ChainringThe ideal solution for your Shimano crankset, this Narrow Wide Single Chainring from Black by AbsoluteBlack benefits from a durable, yet lightweight aluminium construction. Its streamlined design ensures the tooth profile holds the chain snug, allowing you to ditch the chain guide, for a smooth and even ride, you can count on. Features:Designed in the UK, manufactured in PolandUse: Mountain Bike (MTB)Bolt Circle Diameter (BCD): 104mmMaterial: 7075 AluminumCompatibility: 1x9-/10-/11-/12-Speed (Eagle compatible) or Singlespeed setupsWeight: 37g (32T)/46g (34T)Manufacturer Reference Codes: Black 104mm 32T: ABNWOV104X32BK; Black 104mm 34T: ABNWOV104X34BK; Black 104mm 36T: ABNWOV104X36BK; Black 94mm 30T: ABNWOV94X30BK; Black 94mm 32T: ABNWOV94X32BK; Black 94mm 34T: ABNWOV94X34BK; Black 104mm 30T: ABNWOV104X30BK; Red 104mm 32T: ABNWOV104X32RD; Red 94mm 30T: ABNWOV94X30RD; Red 104mm 34T: ABNWOV104X34RD; Red 104mm 36T: ABNWOV104X36RD; Red 94mm 32T: ABNWOV94X32RD; Red 94mm 34T: ABNWOV94X34RD; Red 104mm 30T: ABNWOV104X30RDBuy BLACK by absoluteBLACK Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
BLACK by Absoluteblack Narrow Wide Oval MTB Single ChainringWith its oval shaped design, this hugely popular MTB chainring will maximise your power on both the climbs, flat sections and fast descents. Cyclists do not produce even pedalling power throughout their pedal stroke, so this narrow wide oval single chainring from BLACK by Absoluteblack will make the most of the force you apply, plus minimise resistance when force isn't applied. Oval Mountain Bike Chainring for Smoother PedallingDespite the unusual oval shape, this design makes your pedal stoke feel more "round" than when riding with a "normal" round chainring. Plus, with the narrow wide tooth profile, you'll enjoy excellent chain retention over the roughest terrain.Features:Material: 7075 Txxx AluminiumOval rings help the rider spin smoother, gain a lot more traction in terrain and are easier on legs while climbing32T is equivalent to 30T at dead spot and 34T at the power zone34T is equivalent to 32T at dead spot and 36T at the power zoneState of the art Narrow-Wide tooth profile keeps the chain snug, allowing you to leave the chain guide behindBurly enough for DH Racers and Dirt JumpersArm x BCD: 4x104mm or 4x94mmCompatibility: 1x 9-/10-/11-/12-Speed (Eagle compatible) or Singlespeed setupsWeight: 46g (32T)/49g (34T)Please Note:32T 104mm BCD and all 94mm BCD have offset chainline. These have built in 2mm spacers and threads (please use min. 6mm long bolts).30T 104mm BCD has special offset chainline to get to 48mm. It has built in 2.5mm spacers and threads. 30T 104mm comes with ALL mounting bolts and spacers needed to install the chainring on the crank (2x M8 bolts/2x M5 bolts/2x special spacers). No additional bolts required.Choosing correct size:32T oval is best for someone currently riding 30 or 32T round chainring.34T oval is best for someone currently riding 34 or 36T round chainringChain Options:10-, 11- or 12-Speed chain for geared bike or 6- to 8-Speed one for SS (1/8" also fits). If used in 1x9 drivetrain - 10-Speed chain must be used to obtain the performance (yes - 10-Speed chain will work great on 9-Speed cassette).How to mount absoluteBLACK Oval chainring:There is a small mark (triangle shaped) on the inner circumference of the chainring. This mark MUST sit behind the crank arm.Other products available from BLACK by absoluteBLACKBLACKseries is a sister company of absoluteBLACK Ltd. It was formed from a desire to offer a different perspective of absoluteBLACK’s state of the art products.BLACKseries products use the same raw materials, manufacturing techniques, quality control and teeth profiling as absoluteBLACK. The difference is in the overall design. “We were able to create more industrial looking products that save a considerable amount of CNC machining time, which lead to savings we can pass on to our customers.” says the founder, Marcin Golec.Manufacturer Reference Codes:Black 104mm 32T: ABNWOV104X32BK; Black 104mm 34T: ABNWOV104X34BK; Black 104mm 36T: ABNWOV104X36BK; Black 94mm 30T: ABNWOV94X30BK; Black 94mm 32T: ABNWOV94X32BK; Black 94mm 34T: ABNWOV94X34BK; Black 104mm 30T: ABNWOV104X30BK; Red 104mm 32T: ABNWOV104X32RD; Red 94mm 30T: ABNWOV94X30RD; Red 104mm 34T: ABNWOV104X34RD; Red 104mm 36T: ABNWOV104X36RD; Red 94mm 32T: ABNWOV94X32RD; Red 94mm 34T: ABNWOV94X34RD; Red 104mm 30T: ABNWOV104X30RDBuy BLACK by absoluteBLACK Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
BLACK by Absoluteblack Narrow Wide Oval MTB Single ChainringWith its oval shaped design, this hugely popular MTB chainring will maximise your power on both the climbs, flat sections and fast descents. Cyclists do not produce even pedalling power throughout their pedal stroke, so this narrow wide oval single chainring from BLACK by Absoluteblack will make the most of the force you apply, plus minimise resistance when force isn't applied. Oval Mountain Bike Chainring for Smoother PedallingDespite the unusual oval shape, this design makes your pedal stoke feel more "round" than when riding with a "normal" round chainring. Plus, with the narrow wide tooth profile, you'll enjoy excellent chain retention over the roughest terrain.Features:Material: 7075 Txxx AluminiumOval rings help the rider spin smoother, gain a lot more traction in terrain and are easier on legs while climbing32T is equivalent to 30T at dead spot and 34T at the power zone34T is equivalent to 32T at dead spot and 36T at the power zoneState of the art Narrow-Wide tooth profile keeps the chain snug, allowing you to leave the chain guide behindBurly enough for DH Racers and Dirt JumpersArm x BCD: 4x104mm or 4x94mmCompatibility: 1x 9-/10-/11-/12-Speed (Eagle compatible) or Singlespeed setupsWeight: 46g (32T)/49g (34T)Please Note:32T 104mm BCD and all 94mm BCD have offset chainline. These have built in 2mm spacers and threads (please use min. 6mm long bolts).30T 104mm BCD has special offset chainline to get to 48mm. It has built in 2.5mm spacers and threads. 30T 104mm comes with ALL mounting bolts and spacers needed to install the chainring on the crank (2x M8 bolts/2x M5 bolts/2x special spacers). No additional bolts required.Choosing correct size:32T oval is best for someone currently riding 30 or 32T round chainring.34T oval is best for someone currently riding 34 or 36T round chainringChain Options:10-, 11- or 12-Speed chain for geared bike or 6- to 8-Speed one for SS (1/8" also fits). If used in 1x9 drivetrain - 10-Speed chain must be used to obtain the performance (yes - 10-Speed chain will work great on 9-Speed cassette).How to mount absoluteBLACK Oval chainring:There is a small mark (triangle shaped) on the inner circumference of the chainring. This mark MUST sit behind the crank arm.Other products available from BLACK by absoluteBLACKBLACKseries is a sister company of absoluteBLACK Ltd. It was formed from a desire to offer a different perspective of absoluteBLACK’s state of the art products.BLACKseries products use the same raw materials, manufacturing techniques, quality control and teeth profiling as absoluteBLACK. The difference is in the overall design. “We were able to create more industrial looking products that save a considerable amount of CNC machining time, which lead to savings we can pass on to our customers.” says the founder, Marcin Golec.Manufacturer Reference Codes:Black 104mm 32T: ABNWOV104X32BK; Black 104mm 34T: ABNWOV104X34BK; Black 104mm 36T: ABNWOV104X36BK; Black 94mm 30T: ABNWOV94X30BK; Black 94mm 32T: ABNWOV94X32BK; Black 94mm 34T: ABNWOV94X34BK; Black 104mm 30T: ABNWOV104X30BK; Red 104mm 32T: ABNWOV104X32RD; Red 94mm 30T: ABNWOV94X30RD; Red 104mm 34T: ABNWOV104X34RD; Red 104mm 36T: ABNWOV104X36RD; Red 94mm 32T: ABNWOV94X32RD; Red 94mm 34T: ABNWOV94X34RD; Red 104mm 30T: ABNWOV104X30RDBuy BLACK by absoluteBLACK Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
BLACK by Absoluteblack Narrow Wide Oval XT M8000 ChainringOval chainrings work because the rider does not produce power evenly through the pedal stroke. Oval chainrings maximise the part of the stroke where power is produced and minimise resistance where it isn't. With this BLACK by Absoluteblack Narrow Wide Oval XT M8000 Chainring you will actually feel your stroke to be more efficient and effective.Features: Material: 7075 Txxx Aluminum Arm x BCD: 4x96mm Oval chainrings help the rider spin smoother, gain a lot more traction in terrain and are easier on legs while climbing 32T is equivalent to 30T at dead spot and 34T at the power zone 34T is equivalent to 32T at dead spot and 36T at the power zone State of the art Narrow Wide tooth profile keeps the chain snug, allowing you to leave the chain guide behind Designed in UK, manufactured in Poland Long-lasting construction Burly enough for downhill racers and dirt jumpers Compatibility: 1x9-/10-/11-/12-Speed (Eagle compatible) or Singlespeed setups Note: Chainring is not threaded but chainline is corrected to 49mm with use of built in spacers Weight: 46g (32T); 49g (34T)Choosing Correct Size: 32T oval is best for someone currently riding 30T or 32T round chainring. 34T oval is best for someone currently riding 34T or 36T round chainringHow to Mount Absoluteblack Oval Chainring:There is a small mark (triangle shaped) on the inner circumference of the chainring. This mark must sit behind the crank arm.BLACKseries is a sister company of absoluteBLACK Ltd. It was formed from a desire to offer a different perspective of absoluteBLACK’s state of the art products. BLACKseries is sold exclusively by Chain Reaction Cycles.BLACKseries products use the same raw materials, manufacturing techniques, quality control and teeth profiling as absoluteBLACK. Difference is in the overall design. “We were able to create more industrial looking products that save considerable amount of CNC machining time, which lead to savings we can pass on to our customers.” says the founder, Marcin Golec.Buy BLACK by absoluteBLACK Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
BLACK by Absoluteblack Narrow Wide Oval XT M8000 ChainringOval chainrings work because the rider does not produce power evenly through the pedal stroke. Oval chainrings maximise the part of the stroke where power is produced and minimise resistance where it isn't. With this BLACK by Absoluteblack Narrow Wide Oval XT M8000 Chainring you will actually feel your stroke to be more efficient and effective.Features: Material: 7075 Txxx Aluminum Arm x BCD: 4x96mm Oval chainrings help the rider spin smoother, gain a lot more traction in terrain and are easier on legs while climbing 32T is equivalent to 30T at dead spot and 34T at the power zone 34T is equivalent to 32T at dead spot and 36T at the power zone State of the art Narrow Wide tooth profile keeps the chain snug, allowing you to leave the chain guide behind Designed in UK, manufactured in Poland Long-lasting construction Burly enough for downhill racers and dirt jumpers Compatibility: 1x9-/10-/11-/12-Speed (Eagle compatible) or Singlespeed setups Note: Chainring is not threaded but chainline is corrected to 49mm with use of built in spacers Weight: 46g (32T); 49g (34T)Choosing Correct Size: 32T oval is best for someone currently riding 30T or 32T round chainring. 34T oval is best for someone currently riding 34T or 36T round chainringHow to Mount Absoluteblack Oval Chainring:There is a small mark (triangle shaped) on the inner circumference of the chainring. This mark must sit behind the crank arm.BLACKseries is a sister company of absoluteBLACK Ltd. It was formed from a desire to offer a different perspective of absoluteBLACK’s state of the art products. BLACKseries is sold exclusively by Chain Reaction Cycles.BLACKseries products use the same raw materials, manufacturing techniques, quality control and teeth profiling as absoluteBLACK. Difference is in the overall design. “We were able to create more industrial looking products that save considerable amount of CNC machining time, which lead to savings we can pass on to our customers.” says the founder, Marcin Golec.Buy BLACK by absoluteBLACK Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
OneUp Components Narrow Wide Oval MTB Chain RingUpgrade your 104mm, SRAM 94mm, or Shimano 96mm Symmetric BCD crank with OneUp's tried and tested Narrow Wide profile traction chainrings. These oval chainrings give the ultimate in traction by smoothing out the torque delivered to your rear tyre. Reinforced wide tooth design provides maximum ring durability when run without a bash guard and aggressive crud chamfers give excellent mud shedding performance and extended ring life.Features: Get ultimate traction by smoothing out the torque you deliver to your rear tyre 12% ovality (32T is equal to a 30T-34T range) 115° clocking from crank arm puts the major axis in your power stroke Narrow Wide tooth profile eliminates chain drop with the perfect chain mesh fit Perfect chainline with built in offset for a quieter drivetrain with improved chain wear and best drop performance Reuse your existing 8-10mm long ring hardware - no new bolt packs required Aggressive crud chamfers for awesome mud shedding performance and extended ring life Reinforced wide tooth design provides maximum ring durability when run without a bash guard Made from hard wearing 7075-T6 aluminum plate 104-32T and 94-30T rings have integrated shims and chainring bolt threads to allow the smallest ring size possible. Technical Data: Weight: 94mm - 42g (30T), 50g (32T), 59g (34T); 96mm - 50g (32T), 59g (34T); 104mm - 49g (32T), 58g (34T) Chainline: 48-50mm Material: 7075-T6 Aluminium Compatibility: 94: All symmetrical 4 arm 94mm BCD cranks (SRAM XO1, X1, GX); 94/96: All symmetrical 4 arm 94 or 96mm BCD cranks (SRAM XO1, X1, GX; Shimano compact triple M782, M672, M622, M612); 104mm: All 104mm cranks Buy OneUp Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
OneUp Components Narrow Wide Single ChainringCompatible with a wide range of SRAM and Shimano cranksets, this hard-wearing Narrow Wide Single Chainring from mountain bike (MTB) component specialists OneUp Components provides ultra-efficient chain grip as you ride over the roughest terrain. Made from tough yet lightweight 7075-T6 Aluminium, plus featuring reinforced teeth and mud clearing chamfers, this chainring delivers the performance and strength you need and a long usage life.Features: Material: 7075-T6 Aluminium Speed: 9,10,11 and 12-Speed Chainline: 48-50mm Bolt Circle Diameter (BCD): 4x94/96mm Compatibility: 94/96mm - all symmetrical 4 arm 94mm bolt circle diameter (BCD) cranks (SRAM X01, X1, GX), all symmetrical 4 arm 96mm BCD cranks (Shimano compact triple M782, M672, M622, M612); 104mm - all 104mm BCD cranks Narrow Wide tooth profile eliminates chain drop with the perfect chain mesh fit Perfect 49mm chainline with 2mm Shims included for a quieter drivetrain, improved chainring wear and best no drop performance Subtly slotted bolt holes allow for a perfect fit with both 94 and 96 BCD symmetrical crank arms Reuse your existing 8-10mm long ring hardware - no new bolt packs required Aggressive crud chamfers for awesome mud shedding performance and extended ring life Reinforced wide tooth design provides maximum ring durability when run without a bash guard 104-30T rings have integrated shims and chainring bolt threads to allow the smallest ring size possible Weight: 94mm - 43g (30T), 49g (32T), 58g (34T); 96mm - 43g (30T), 49g (32T), 58g (34T); 104mm - 40g (30T), 44g (32T), 54g (34T), 2g (4x shims) Please Note: NOT compatible with 10-Speed Shimano XT armsets and also NOT compatible with 12 Speed Shimano/Hyperglide Chains.Please Note: Shims are included with ring. For 2x crank conversions, shims between the crank and ring get you back to an ideal 49-50mm chainline. For 3x crank conversions, shims under the bolt heads allow reuse of your 3x hardware.Buy OneUp Components from Chain Reaction Cycles, the World's Largest Online Bike Store.