S&S CYCLE Big Bore Kit 90mm 865cc Royal Enfield 650 Twin. Big Bore Kit - 90.00 mm - 865 cc - Royal Enfield 650 Twin. Increase compression ratio from 9.5:1 to 11.0:1. Kit includes cylinder sleeves, pistons and head gasket. Fits Royal Enfield® 650 Twins.
Kit Includes: Cylinders Piston Kits Head Gasket. Please message us for details if needed. The product I ordered is perfect exactly what I expected.
The gasket showed up with great packaging to protect the gasket. Excellent selection of quality VINTAGE parts. Accurate description fair pricing and amazing customer service.