• 650c.c. to 750c.c. Big Bore conversion kit
• No machining required
• 9:1 compression pistons
• Gasket kit included
• Made in England

The ever popular Triumph big bore kit, increase your displacement and power! This kit includes everything you need to install, this kit is bolt-on: no machining required! Fits unit 650 Triumph 1963 - 1972. Included is a 750 c.c. barrel, pistons, rings, wrist pins, copper head gasket, and gasket kit. The pistons that come with this kit have a compression ratio of 9:1.