Boost any 883cc Harley-Davidson Sportster to 1200cc without hassle. No machine shop, no rebalancing your stock 883cc flywheels, no cylinder head modifications… The dished piston dome keeps compression down to a streetable 9.4:1 with stock 883cc heads. This kit includes
- pre-honed cylinders
- pistons
- rings
- wristpins
- keepers
and is ready to assemble out of the box. Installing this kit takes then same time as replacing a stock top end. It’s just more fun when you’re done.
The cylinder fin profile does not perfectly match the fins on 2004 and later stock heads.
- fits Sportster 883 cc 1986-2020
- aluminum / cast aluminum
- with gaskets, assembly lube, instructions
Lean running condition after conversion
This conversion causes a lean fuel mixture, the fuel metering system has to be readjusted.

Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com