S&S 97″ Big Bore Kit For Harley Big Twin 1999-2006

S&S Cycle 97″ Big Bore Kit For Harley Big Twin

You know the saying – “There’s no replacement for displacement!”

Features:

• Kit yields excellent results with stock cylinder heads
• Features the largest bore (3.927″) that can safely be used in a cylinder with stock spigot diameter
• Even though stock cylinders can be bored to fit the 3.927″ pistons, the included S&S cylinders feature a much stronger liner to stand up to the added power
• Easy installation: no need to bore or split existing cases, just swap the cylinders
• Specifications: 3.927″ bore, 4″ stroke, 97″ displacement, 9.7:1 compression ratio with stock heads
• Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
• Black or silver powder-coat finish
• Increased fin area for better heat dissipation
• Valve pocket recessed in S&S pistons are enlarged for oversize valves and higher lift cams
• Maintains stock engine height and stock piston weight
• Made in the USA