SRAM Red Crankset 11 sp. 172.5 50/34T BCD: 110mm BB30 68mm 45.5mm Carbon Size-20x2.40 Keys are needed to remove

Keys are needed to remove the battery from the bike frame only

Designed specifically with the rigors of e-bikes and daily commuting in mind the Thudbuster ST (short travel) has 50mm of travel to significantly diminish shocks and impacts from broken pavement cobblestones or any other mixed surfaces

Available in 24 and 21oz sizes

Designed and developed to offer the ultimate combination of lightness

SRAM Red Crankset 11 sp. 172.5 50/34T BCD: 110mm BB30 68mm 45.5mm Carbon Size-20x2.40 Keys are needed to removeMaterial: Exogram hollow carbon fiber arms Chain Compatibility: 11 speed Pedal Spindle: 9 16'' Bottom Bracket: Not included SRAM Model ID: FC RED C2 TECH SPECS BCD 110 BB Inclusion No Chainline 45. 5mm Teeth 34 50 Crank Spindle Diameter 30mm Crank Arm Length 172. 5mm Interface BB30 PF30 Crankset Material Carbon Primary Color Black Speed 11 Drivetrain Spacing Road Crank Arm Length 172. 5Mm Chainring Teeth 50 34T Interface BB30 PF30