Seller notes

Features Fits 99-06 Twin Cam (3.927" Bore, 4" Stroke, 9.7:1 Comp. w/ stock heads) The Big Bore kit yields excellent results with stock cylinder heads Easy installation: no need to bore or split existing cases, just swap the cylinders Cylinders are constructed from premium aluminum castings with cast-in iron liners Kits include cylinders, pistons, rings and gaskets (head, base and exhaust) Black or silver powder-coat finish Made in the U.S.A. This project requires a skilled technician. It is the ...

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