Seller notes

55mm Stroker Crankshaft Kit – 2003-2009 Models55mm Stroker Crankshaft Kit. Increase your displacement, torque, and power by replacing your stock crankshaft with this one. The kit also includes a new cam sprocket and DID Cam Chain. No modifications are needed and works with the stock bore and cylinder head or with all 134cc, 138cc, 143cc, 160cc, 165cc, and 178cc bore & race head kits that use cylinders with a skirt. If you have an 07 or older model with the original OEM Output Shaft, we highly ...

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