New 55mm Stroker crankshaft! Increase your displacement, torque, and power by replacing your stock crankshaft with this one. No modifications are needed and works with TB's stock bore/head and all 134cc, 138cc, 143cc, and 160cc bore/race head kits. If you have an 07 or older model, we highly recommend also purchasing the updated Kawasaki Output Shaft.
