Description

Yamaha Raptor 660 Engine Rebuild – Core Required

If your Yamaha Raptor 660 engine is hard starting, losing torque, or showing signs of internal wear, we rebuild your original engine to restore reliable power and smooth performance. This is a build core required listing, which means we must receive your engine before rebuild work begins.

Because we machine and assemble engines in-house, we control internal tolerances, crankshaft alignment, and final inspection standards from teardown to torque.

Warranty Coverage

Every rebuilt Raptor 660 engine includes a standard 1-year no-fault warranty. In addition, you may upgrade to a 2-year no-fault, no-questions-asked warranty for added protection.

For complete coverage details, review our engine warranty page.

What Your Complete Engine Rebuild Includes

• Complete teardown, cleaning, and inspection of all components
• Crankshaft rebuilt, inspected, trued, and verified within OEM specifications
• All bearings inspected and cleaned
• Cylinders inspected for wear and damage
• Worn cylinders bored to next oversize and hone finished or replaced
• New piston and piston rings
• Cylinder head cleaned, decked, and rebuilt to manufacturer specifications
• Valve guides inspected and replaced as needed
• Valves and seats recut and verified with vacuum testing
• Camshaft lobes and journals cleaned and polished, replaced if required
• Timing chain inspected and replaced as needed
• Refurbished oil pump assembly
• Engine cases fully inspected and machined
• All gaskets and seals replaced
• Final assembly torqued to manufacturer specifications

Built and Checked by Experts

First, a master technician completes the rebuild and verifies all rotating assemblies. Next, a second inspection confirms bearing clearances, crank alignment, and sealing surfaces. As a result, every Yamaha Raptor 660 engine leaves our facility balanced and ready for dependable use.

Core Requirement

Your rebuild begins only after we receive your Raptor 660 engine core. We require the engine on-site to complete the inspection and begin machining.

Core Exchange Process

• Place Your Order: Secure your rebuild slot.
• Prep Your Core: Remove exhaust, electrical, and fueling components using our simple tear-down instructions.
• Scheduled Pickup: Once packaged, we arrange carrier pickup directly from your location.
• Expert Rebuild & Return: After passing strict quality control, your rebuilt engine ships back ready for installation.

Once your engine arrives at our facility, the typical turnaround time is approximately two weeks. After final inspection, we ship it back ready for installation.

Warranty & Support

All REV6 engines include a standard 1-year warranty, with the option to upgrade to a 2-year no-fault warranty. For shipping steps, core returns, and lead times, visit our Help Center or FAQ. Need direct assistance? Contact our team, and we’ll get you set up.

DIY Builders Welcome

If you prefer to handle the rebuild yourself, review our Engine Rebuild Kit Guide. You’ll also find technical walkthroughs and shop insight on the REV6 Blog and our YouTube channel.

Send in your core and rebuild your Yamaha Raptor 660 the right way.

REV6 proudly supports U.S. veterans and servicemembers with exclusive discounts.