We're bringing our World Cup proven technology to the eBike marketplace, with our e*spec Race Carbon Cranks.In contrast to our Gen3 carbon cranks, the Q Factor, overall profile, and volume of our Gen4 cranks has been greatly reduced. Bosch, Brose, TQ, Fazua e*spec cranks have an 8mm self-extractor built in to both arms for easy removal of press-fit versions. Shimano EP8 Cranks are compatible with EP8, EP800, and E8000/7000 motor systems. E8000/7000 require adapter kit CSS30-114. They're designed with a lightweight single bolt spindle clamp and alloy preload caps, with crank boots for added impact resistance.Available for Bosch Gen4 CX, Brose S Mag drive, Fazua Ride 50, TQ and Shimano EP8.Chainring: e*spec Direct Mount ChainringsColor: Stealth Black w/Protective VinylCompatibility: Bosch CX Gen4, Brose S Mag, also compatible with Fazua and TQ Motors. NOT compatible with Fazua Ride 60 with ETOR spindle. Shimano EP8 also compatible with EP800, and E8000/7000 (with adapter)Features: World Cup proven layup. Slim Q factor, overall profile, and volume. 8mm self-extractor in each arm. Impact resistant crank boots. Shimano EP8 include alloy preload capsIncluded: Crankset, APS Adjuster, Installation Tools, Crank Boots (x2), Sticker, User ManualLength: 160mm, 165mm, 170mm (not all models)Material: World-Cup DH-rated layup and construction, compacted carbon fiber, with additional 3k added to front and rear faces of crank for impact resistanceSpindle: Bosch CX Gen4, Brose S Mag/TQ/Fazua, Shimano EP8/EP800/E8000/7000 (with adapter)Weight:Bosch Gen4 -- 160mm: 397g, 165mm: 400g, 170mm: 402gBrose S Mag/Fazua -- 160mm: 349g, 165mm: 352g, 170mm: 354gShimano EP8 -- 165mm: 391g, 170mm: 397g