Description
When your Raptor 660R is showing signs of power loss, oil consumption, or top-end noise—but your bottom end is still solid—this Yamaha Raptor 660R Master Engine Refresh Kit delivers the performance boost you need without a full rebuild. It’s the perfect middle-ground solution for riders looking to refresh a tired engine and restore performance without tearing it all down.
Built specifically for 2001–2005 Yamaha Raptor 660R models, this kit includes the key top-end and mid-range components needed to bring your engine back to life. Whether you’re a seasoned DIYer or working with a trusted shop, every part is engineered to fit perfectly and outperform stock OEM components under real riding conditions.
Ideal for weekend trail riders, aggressive dune runners, and anyone who wants to extend the life of their machine without the cost of a complete rebuild.
This Kit Includes:
-
Intake Valves
-
Exhaust Valves
-
Crankshaft
-
Cylinder
-
Cam Chain
-
Standard Bore Piston Kit
-
Engine Bearing Kit
-
Complete Gasket Kit
-
Water Pump Rebuild Kit
-
Oil Seal Set
Why This Kit Is a Top Pick:
-
Refreshes your engine without replacing every internal component
-
Precision-fit parts designed for Yamaha Raptor 660R engines
-
Great for high-mileage or low-compression machines
-
More affordable and less labor-intensive than a full teardown
-
Backed by a 1-year warranty for peace of mind
Best For:
-
Riders experiencing top-end engine wear or power loss
-
DIY mechanics doing a mid-level overhaul
-
Trail and sport riders needing a performance refresh
-
Customers not ready for a full engine replacement
Ready to Ride Harder, Longer? Let’s Get to Work.
Power doesn’t last forever, but you can bring it back.
Order your Yamaha Raptor 660R Master Engine Refresh Kit today and ride with confidence knowing you’ve got quality parts, proven performance, and the REV6 team behind you.
Need help with installation or fitment?
Visit our FAQ or Contact Us — our team is built by riders, for riders.
Stay Connected for Tech Tips, Builds & Rebuild Inspiration:
-
Facebook: https://www.facebook.com/rev6engines
-
Instagram: https://www.instagram.com/rev6engine/
-
YouTube: https://www.youtube.com/@rev6engines
**We cannot ship your motor/transmission until we receive your core or the core charge payment.