Sram: JUST PEDALThe Apex 1 crankset completes the Apex 1 group, SRAMs most affordable road 1x drivetrain yet. Using patented X-Sync technology, the Apex 1 crankset runs silent and secure. Riders looking for a wide gear range and shifting simplicity at a great value will find it in Apex 1. THINGS TO REMEMBER SRAM 1x road 10-speed and 11-speed compatible 24 and 30mm spindles, compatible with GXP, BB30, PressFit 30, and PFGXP Compatible with 130 and 135/142 OLD frames Available with 40T, 42T, 44T chainrings Chain guard option Aluminium chainring and crankarmsFEATURES AND BENEFITS Patented X-Sync chainring technology provides unparalleled chain retention as part of a complete SRAM 1x system Integrated 4-arm, asymmetric spider maximizes stiffness to weight Greater frame and tire clearance than other road cranks, 2mm per sideSPECIFICATIONSSpeeds: 10/11BB Compatibility: GXP/PF GXP 68mmChainring Size: 42Crank arm length: 165mm, 170mm, 172. 5mm, 175mmChainline: 45. 5mmBB Spindle Interface: 24mmChainring material: AluminiumGuard: No GuardBolt Circle Diameter (BCD): 4-Bolt 110 BCDCrank arm material: AluminiumColour (Crank arm): Black