107inch to 124inch Big Bore conversion cylinders for M8

Black with highlighted fins. This is a quality 4.25inch bolt-on big bore cylinder kit for 107inch M8 models with stock 3.937inch bore x 4.375inch stroke. Kit can be used with a 4.25inch Wiseco big bore piston kit. Cylinders include dowel pins and are marked for correct front/rear installation. Capacity will increase from stock 107inch (106.52inch / 1746cc) to a hefty 124inch (124.13 / 2034cc) but still installs without crankcase machining. Flywheel re-balancing is not required. Compression ratio is 1:11 and is compatible with the stock camshaft. Includes installation instructions. Note: Order 576555 Wiseco 4.25inch bore conversion pistons & 576556 Wiseco gasket kit separately