The Apex 1 crankset completes the Apex 1 group, SRAM´s 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.- Speeds:10-11, - BB Compatibility:BB30-PF30-68mm, GXP-PF GXP 68mm.- Chainring Size:42, - Crank arm length:165mm, 170mm, 172,5mm, 175mm.- Chainline:45,5mm.- BB Spindle Interface:24mm, 30mm.- Chainring material:Aluminum.- Guard:No Guard.- Bolt Circle Diameter (BCD):4-Bolt 110 BCD.- Crank arm material:Aluminum.- Color (Crank arm):Black.Color:black.Crank arm:165 mm.Bottom Bracket:GXP.Teeth:42T.Chain Line:45,5 mm.Gears:1x11.Bolt circle diameter:n-a.Q-Factor:n-a.Apex 1 Crankset.