Full Speed Ahead SL-K 2x Modular Carbon Crankset - 172.5mm For Shimano HG+ 12-Speed 50/40t DM/90 BCD 30mm 386EVO Spindle BLK CheckoutSpec= Air shaft 700 x 28 and larger

700 x 28 and larger sizes are compatible with hookless rims 700 x 26 size tires are not hookless compatible

Press-fit end caps allow tool-free maintenance and conversion Rear Axle 12mm Thru x 142mm Cassette Body Type Shimano Micro Spline Color Black Skewer Included No Bearing Type Sealed Cartridge Defined Color Black Spoke Interface J-Bend Hub Drilling 24 Hub/Brake Compatibility Center-Lock Disc

5 x 3 tires Brake Type Disc Color Fool's Gold Defined Color Gold Fork Material Steel Fork Type Rigid Frame Material Steel Frame Type Rigid Front Axle 15mm Thru x 110mm Mfg Size Large Rear Axle 12mm Thru x 145mm TT (Effective) 635 Wheel Size 27

CeramicSpeed's OSPW Aero system has been developed in close collaboration with one of the world's leading aerodynamicists

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Full Speed Ahead SL-K 2x Modular Carbon Crankset - 172.5mm For Shimano HG+ 12-Speed 50/40t DM/90 BCD 30mm 386EVO Spindle BLK CheckoutSpec= Air shaft 700 x 28 and largerEngineered with advanced materials and fully in house manufacturing the SL K combines durability innovation and style making it the ideal choice for both professional cyclists and passionate enthusiasts looking for the best equipment. At the heart of the SL K Light Direct Mount lies FSAs Hollow technology which creates ultra light hollow carbon crank arms. This design offers the perfect balance of lightweight construction and exceptional stiffness