S&S brings out 1250cc overbore kit for Sportsters

Publish Date: 
Mar 30, 2014
By Bruce Steever

VIOLA, Wisc. -- Many riders are constantly looking for more from their machines. Harley-Davidson Sportsters present a great chance for an upgrade, thanks to the shared engine between the 1200 and 883 versions.

S&S Cycle now offers a 1250cc big bore kit that can liven up a Sportster 1200, and flat-out revolutionize an 883.

The 1250 kit includes forged pistons with coated skirts, rings and wristpins, S&S cylinders with 3.5625” bores, and MSL head, base and exhaust gaskets. Options include flat top pistons, providing a 10.3:1 compression ratio, or domed pistons that bump compression up to 11.2:1.

A stock Sportster 1200 cylinder can actually be bored out to accept the oversize piston set, but the 883cc version requires the updated barrels as well as new heads.

The S&S 1250cc big bore kit retails for a starting price of $989.95.