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Features - Shimano XT FC-M8100-1 12-speed Crank FC-M8100-1 Q-Factor 172mm Chain line: 52mm O.L.D 142mm / 148mm (Boost) Compatibility 1x12-speed with CS-M8100 cassettes 10-45 and 10-51 Mounting system Direct mount (Lighter and stiffer design & easy exchangeable chainring by direct mount and one key release) Chainring SM-CRM85 Available in different gradations (28-30-32-34-36)  Product features Use: MTB Group: XT M8100 Model: FC-M8100-1 Gradation:  32T / 34T / 36T Chainring  Q-Factor: 172mm Threaded BB shell width: 68 / 73mm Gear rear: 12-speed Construction: Hollowtech II Compatible Chain: CN-M8100 12-speed Crank arms: 4 arm O.L.D: 142mm / 148mm (Boost) Chain line: 52mm Crank Arm Length (choose variant) 165mm  170mm 175mm The Shimano XT FC-M8100 1 x 12-speed crank with 172 mm Q-factor, 52 mm chainline and 142 / 148 mm O.L.D stands for highest drive efficiency at low weight. It offers optimum power transmission and maximum speed for the new XT system, which only use 1 chainring.The original mountain bike group continues its legacy: XT 1x12-speed Crank FC-M8100-1 from ShimanoIn addition to a new special 12-speed chain (CN-M8100) with the corresponding new 12-speed QUICK LINK lock, SHIMANO is also equipping the XT M8100 with new cranksets for 12-speed (FC-M8100/8120/8130-1). Most of them use 1-speed systems and a wide range of chainrings (28T to 36T) is available. The new XT 1x12-speed cranks are characterised by DYNAMIC CHAIN ENGAGEMENT+ technology, whose special high-precision tooth profile ensures that the chain finds optimum grip on the upper part of the chainring on rough terrain, but detaches equally well from the chainring at the bottom, thus ensuring efficiency, smoothness and low noise of the drive. The cranks are equipped with a direct-mount system for quick and safe assembly of the chainrings, enabling chainrings to be changed in no time at all. The crank is available in boost and non-boost specifications. The original mountain bike group continues its legacy of remaining the standard for mountain bikers everywhere. Nearly three decades in, the DEORE XT brand is defined by its trail-tested durability, reliability and performance. Recognizing that today’s mountain bikers are riding faster and confidently on more technical terrain, the legacy of DEORE XT is more important than ever. In 2019, our pinnacle mountain bike technologies will trickle down to SHIMANO DEORE XT M8100. Features - Shimano XT FC-M8100-1 12-speed CrankFC-M8100-1 Q-Factor 172mmChain line: 52mmO.L.D 142mm / 148mm (Boost)Compatibility 1x12-speed with CS-M8100 cassettes 10-45 and 10-51Mounting system Direct mount (Lighter and stiffer design & easy exchangeable chainring by direct mount and one key release)Chainring SM-CRM85 Available in different gradations (28-30-32-34-36) Product featuresUse: MTBGroup: XT M8100Model: FC-M8100-1Gradation: 32T / 34T / 36T Chainring Q-Factor: 172mmThreaded BB shell width: 68 / 73mmGear rear: 12-speedConstruction: Hollowtech IICompatible Chain: CN-M8100 12-speedCrank arms: 4 armO.L.D: 142mm / 148mm (Boost)Chain line: 52mmCrank Arm Length (choose variant)165mm 170mm175mm Note: Product without original box，It is 100% authentic Tariffs are not included in the cost of goods.Customers need to pay their own customs duties, and the amount is determined by the customs.Thanks Starting from January 1, 2021, products shipped to the UK below 135￡ will be collected and paid by eBay for VAT. For products higher than 135￡, buyers need to pay tariffs themselves. Starting from July 1, 2021, VAT will be collected and paid by eBay for products shipped to the EU for less than 150€. For products above 150€, buyers need to pay tariffs themselves.