Grizzly 660 Stock Bore Cylinder 100mm Top End Rebuild Kit Cylinder Head Hot Cams
Complete Yamaha Grizzly 660 and Rhino 660 stock bore top end rebuild kit with forged piston cylinder head Hot Cams camshaft and Cometic gaskets.
Yamaha Grizzly 660 Rhino 660 Stock Bore 100mm Top End Rebuild Kit Head Hot Cams
📖 Product Description
Restore the power, reliability, and performance of your Yamaha Grizzly 660 or Yamaha Rhino 660 with this complete 100mm stock bore top end rebuild kit. Designed as a true bolt-on solution, this premium rebuild package includes a brand new aftermarket cylinder, forged piston kit, assembled cylinder head, Mudbuster Hot Cams camshaft, timing components, gaskets, and hardware needed to refresh your engine without machining.
Built for riders who demand dependable performance on the trail, in the mud, or on the farm, this kit combines high-quality components from trusted performance manufacturers including Wiseco, Wossner, JE, CP, and Cometic. Whether you're repairing a worn-out top end or upgrading for improved throttle response and reliability, this package delivers long-lasting durability and performance.
🔥 Key Features & Benefits
This complete Yamaha 660 rebuild package is engineered for easy installation and dependable performance using premium forged internals and upgraded valvetrain components.
- 100mm stock bore cylinder provides direct OEM-style fitment with no machining required
- Forged piston kit from Wiseco, Wossner, JE or CP* for superior strength and durability
- New assembled cylinder head includes valves and springs pre-installed
- Mudbuster Hot Cams camshaft improves throttle response and low-to-mid range performance
- Cometic top-end gasket kit ensures reliable sealing under demanding conditions
- Complete bolt-on package designed for straightforward installation
- Compatible with pump or race fuel applications
📦 Product Contents
This complete Yamaha 660 top end rebuild kit includes the following brand new components in original manufacturer packaging.
- New aftermarket stock bore 100mm cylinder
- Forged piston (Wiseco, Wossner, JE or CP depending on availability)*
- Piston ring set
- Wrist pin
- Circlips
- New assembled aftermarket cylinder head with valves and springs
- Mudbuster Hot Cams camshaft
- Cam chain
- Cylinder stud kit
- Spark plug
- Cometic top-end gasket kit
✅ Compatibility
This rebuild kit is designed for Yamaha 660 single-cylinder ATV and UTV platforms using the 100mm stock bore engine configuration.
- Fits all Yamaha Grizzly 660 models and years
- Fits all Yamaha Rhino 660 models and years
- Compatible with stock bore 100mm Yamaha 660 engines
- Direct bolt-on installation with no machining required
❓ FAQ
- Q: Does this kit require cylinder boring or machining?
A: No. This is a complete bolt-on stock bore rebuild kit designed for direct installation with no machining required.
- Q: Which forged piston brand is included?
A: The kit includes a premium forged piston from Wiseco, Wossner, JE, or CP depending on current inventory availability.
- Q: Is the cylinder head assembled?
A: Yes. The aftermarket cylinder head comes fully assembled with valves and springs installed.
- Q: Can this kit be used with pump gas?
A: Yes. The forged piston is designed for use with either premium pump gas or race fuel applications.
- Q: Are all parts new?
A: Yes. Every component included in this rebuild package is brand new and shipped in original packaging.
🌟 Why Buy from BPRATV
At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. We specialize in high-performance powersports components trusted by riders and builders who demand reliability and results. Every part is carefully selected for precision, durability, and real-world performance. Trust BPRATV to keep your Yamaha Grizzly 660 and Rhino 660 running at its best, every single time.
Restore your Yamaha 660 power and reliability with this complete forged top end rebuild kit — order today!
BPRATV - The Best Parts. The Best Performance. The Best Price.
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© BPRATV LLC
Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and/or may cause the vehicle to be illegal in some locations.
This product is exempt from the emission standards and related requirements of 40 C.F.R. §1051 as provided by 40 C.F.R. §1051.620, and California law. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed-course, nonroad competition/racing.
