SupercrankA supercrank (moderate lighten, balance & polish) is the “ultimate” crankshaft modification for knife-edge performance. The OEM crankshaft is blueprinted to the best combination of oil clearance, moderate lightening and precise tolerance for your specific application. The crank throws are contoured and polished to a mirror finish, improving oil flow and reducing crankcase turbulence. Each crankshaft is custom balanced to the reciprocating weight and intended rpm range, for use with or without the OEM counterbalance (on some models).

Ultra-Lite Supercrank (max lighten, balance & polish) developed specifically for Road Racers. Our Ultra-Light Supercrank reduces the flywheel effect for faster engine acceleration, more efficient braking – and most importantly – better lane control. The reduction in gyroscopic effect helps the rider change direction – a serious benefit on road courses.

Heavy Supercrank (balanced, polished, but not lightened) comprises of polishing the finished crank throws to a bright finish for improved oil flow.

Call for pricing: (330) 922-8000

The most popular service is lightening and race balancing cranks for racing and hot rod street bike use. This service consist of precision machining the crank for weight removal and counterweight reshaping, computer race balancing for extended high RPM use, reworking the oil holes on rod journals for increased oil flow at the bearing, and micro polishing all journals. The balancing department uses the latest state of the art computerized balancer that is capable of measuring dynamic out of balance to .01 of a gram.


These crankshafts have won championships in virtually all kinds of racing; road racing, drag racing, three quarter midgets, dwarf cars, mini sprints, etc. Every model crank is different and requires a different style of modification.

gsxr Supercrank kit

The advantage of a lightened crank… Much quicker throttle response, less power wasted trying to turn a heavy crank means more power to the rear wheel. The engine accelerates faster. Harder pull off the corners. Reshaped counterweights move through the oil mist with less drag. Lighter cranks have less gyro effect. As all racers know, heavy wheels and brakes spinning fast act like gyroscopes, and resist being moved off their axis, such as leaning the bike over for cornering. Same with the crank. The heavier the spinning crank, the more it resist being tilted when cornering. Light cranks not only make more power, but help improve handling.