S&S CYCLE 129" Power Package for M8 — 129 in, 4.32 in bore, 11.0:1 – 18-23 Softail, 17-19, 21-23 Touring, 22 CVO, 17-23 Trike

Built for riders who want a bolt-on big-bore upgrade, this S&S CYCLE Performance Kit increases a 107" M8 to 129" with no case machining required.

• 4.32" bore cylinders with 11.0:1 forged pistons
• S&S oil pump/cam plate with blue anodized finish
• Independent scavenge sections for the flywheel cavity and cam chest
• Removable passage plugs for servicing
• Debris screens in both scavenge pickups and a magnet in the cam chest
• Quickee pushrods, premium tappets, and hard-anodized black coated tappet cuffs
• S&S 550 cams and valve springs designed for big-bore applications
• All necessary gaskets, bearings, and hardware included for bolt-on installation

Compatible with M8 applications only; not for any Trike models.