KPMI - 80-81900 - TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS - '03-'06 Yamaha YZ450F, WR450F
The KPMI TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS features 2618 Alloy Fully CNC Machined Piston with performance skirt coating, Lightweight Racing Spring Kit compatible with high performance cams, and Includes Piston, Rings, Clips and Pin.
Features
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Specs
- Segment: Offroad
Frequently Asked Questions - KPMI - 80-81900 - TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS - '03-'06 Yamaha YZ450F, WR450F
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.
