S&S CYCLE - 310-1226 - 129" Power Package Engine Performance Kit - '17-'23 Harley-Davidson Electra Glide Police FLHTPI, Electra Glide Ultra Classic
The S&S CYCLE 129" Power Package Engine Performance Kit features big bore cylinders come with matching cam, cam plate and oil pump, Independent scavenge sections for flywheel cavity and cam chest, and Magnet in cam chest to help prevent debris from entering oil pump.
Features
- Transform 107" oil-cooled M8 into 129" with no case machining required
- Big bore cylinders come with matching cam, cam plate and oil pump
- Independent scavenge sections for flywheel cavity and cam chest
- Magnet in cam chest to help prevent debris from entering oil pump
- Feature high-performance conical single-wire S&S valve springs
- Original engine serial numbers are retained
- Passage plugs are removable for servicing
- Debris screen in both scavenge pickups
- MLS (multi-layered steel) head gaskets
- Performance matched 550 cam
- Works with stock crankcase
- Made in the USA
Specs
- Cooling System: Oil Cooled
- Style: Big Bore
- Model: Power Package
- Type: Engine
- Color/Finish: Black
- Riding Style: Street
- Bore Size: 4.320"
- Cam Drive Type: Chain
- Displacement: 129"
- Product Name: Performance Kit
- Color/Finish: Non-Highlighted Fins
- Stroke Length: 4.375"
- Features: Black Pushrod Tubes
- Units: Kit
Frequently Asked Questions - S&S CYCLE - 310-1226 - 129" Power Package Engine Performance Kit - '17-'23 Harley-Davidson Electra Glide Police FLHTPI, Electra Glide Ultra Classic
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
