Profile Racing Replacement Crank Arm (Left) (Boss) (Chrome) (170mm)
451250A3A*X5X
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Replacement crank arm for Profile Chromoly BMX cranks. Sold individually.
With Boss: Arm has welded bolt boss for Bolt Drive sprockets. Left Arm with boss for Left Hand Drive or Right Arm with Boss for Right Hand Drive. (10.2oz)
No Boss: Arm has no bolt boss for a clean look and weight savings, for Spline Drive sprockets or Non-Drive side. (9.8 oz)
Made in the USA.