Riders with a diamond taper crankset on a road or hybrid bike who need a 175 mm left arm to replace a damaged or worn one.
This is a left-hand crank arm in silver alloy, 175 mm long, with a 27 mm offset. Its low profile shape suits road bikes and hybrids with a narrower Q factor, and the length is measured from the centre of the axle to the centre of the pedal.
The axle end has a tapered square socket, the diamond taper fit, so it needs a matching diamond taper axle. It is a single arm, so match the length to your right arm and check your axle type before ordering.
Left hand, 175 mm
A single left (non-drive side) arm, 175 mm long, to pair with a 175 mm right arm.
Low profile, 27 mm offset
A slim arm with a 27 mm offset, suited to road bikes and hybrids with a narrower Q factor.
Diamond taper socket
A tapered square axle socket, for cranksets that use the diamond taper fit.
Silver alloy
An alloy arm in a silver finish.
Crank arm
Great for
Maybe not for
This is the 175 mm length with a 27 mm offset, and the left arm only. The length is usually stamped on the back of your right arm, so check it matches, and check that your axle is the diamond taper type.
Fit it square and check it again
Seat the arm square on the axle, tighten the crank bolt firmly and recheck it after your first ride, as a new arm can settle onto the axle. The left pedal has a reverse (left-hand) thread, so it tightens the opposite way to a right pedal.
