![129" Power Package for M8 - 129" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w/o Highlight Fins - 107" M8 [0904-0157]](http://road-rage-bikeworks.myshopify.com/cdn/shop/files/7E602A86-3C03-41DA-AF22-5779C6453345.png?v=1775171852&width=1290)
129" Power Package for M8 - 129" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w/o Highlight Fins - 107" M8 [0904-0157]
- Big-bore bolt-on kit increases 107" M8 to 129" with no case machining required
- 4.32" bore cylinders with 11.0:1 compression ratio forged pistons
- S&S oil pump/cam plate with blue anodized finish
- Passage plugs are removable for servicing
- Independent scavenge sections for flywheel cavity and cam chest
- Debris screen in both scavenge pickups
- Magnet in cam chest to help prevent debris from entering the oil pump
- Increased oil flow capacity on both the oil feed and scavenge side
- Adjustable pressure relief valve can be adjusted with the unit installed in the engine
- Quickee pushrods
- S&S premium tappets
- S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
- S&S 550 cams are designed for big bore applications
- S&S valve springs work with cams up to 0.605" lift
- High-performance conical single wire spring design
- All necessary gaskets, bearings and hardware for bolt on installation included
- Made in the USA
- Not for any Trike models.