Hub measures from pulley mounting surface to crank gear 2.250" and has a long nose on the front to work with an external crank support. End of crank hub is machined with a provision to drive a mandrel off the end of the crank if the racer chooses.
RBS carries a full line of keystock, degree rings, crank trigger components or crank supports which can all be purchased separate by the racer if needed.
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