S&S CYCLE 0904-0054 920-0145 Big Bore Kit

Features

• Complete kits include cylinder sleeves, pistons and head gasket
• 750cc kit increase bore and stroke to 83.5mm x 67.8mm (stock is 78 mm x 67.8 mm)
• 865cc Increases bore and stroke to 90 mm x 67.8 mm (stock is 78 mm x 67.8 mm)
• Both kits increase compression ration to 11.0:1 (stock is 9.5:1)
• Made in the U.S.A.
• FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY.

Specs

Style	Big Bore
Stroke Length	67.80 mm
Compression Ratio	11.0:1
Units	Kit
Riding Style	Street
Bore Size	90.00 mm
Product Name	Performance Kit

Part Notes

• Fits Royal Enfield® 650 Twins

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.