Raptor 660 102mm Big Bore NIKASIL Cylinder Reusable NO SLEEVE 686cc Top End Kit!
Upgrade your Yamaha Raptor, Rhino or Grizzly 660 with this 102mm 686cc Nikasil big bore kit. Includes Wiseco piston, titanium head studs, gaskets and timing components.
Yamaha Raptor 660 102mm Big Bore 686cc Nikasil Cylinder Top End Kit – No Sleeve
📖 Product Description
Take your 660 to the next level with the BPRATV 102mm 686cc Big Bore Nikasil Top End Kit. Featuring a lightweight aluminum cylinder with advanced Nikasil plating, this setup eliminates the need for a steel sleeve—delivering superior heat transfer, tighter tolerances, and a fully reusable cylinder design.
Built for serious riders, racers, and performance enthusiasts, this complete 686cc top end kit combines premium components with proven durability to unlock stronger torque, quicker throttle response, and reliable high-RPM performance.
🔥 Key Features & Complete Kit Contents
This is a true performance-focused top end package—engineered for strength, reliability, and maximum power output.
- BPRATV 102mm aluminum cylinder with Nikasil plating (No sleeve – fully reusable)
- 102mm Wiseco forged big bore piston kit
- Nitrite-coated piston rings for enhanced durability and sealing
- Chrome wrist pin and circlips
- Cometic big bore top-end gasket kit with MLS head gasket
- Talon TITANIUM cylinder head stud kit – LIFETIME WARRANTY*
- Heavy-duty timing chain
- Black billet cam chain tensioner
- Cam chain tensioner gasket
✅ Compatibility
Direct bolt-on compatibility for Yamaha 660 single-cylinder engine platforms.
- Yamaha Raptor 660 – All Years
- Yamaha Rhino 660 – All Years
- Yamaha Grizzly 660 – All Years
- Designed for 686cc (102mm) big bore conversion
- Performance and racing applications
❓ Frequently Asked Questions (FAQ)
- Q: Is this a sleeved cylinder?
A: No. This is a high-performance aluminum cylinder with Nikasil plating—no steel sleeve required, allowing better cooling and long-term reusability.
- Q: What displacement does this create?
A: The 102mm bore increases displacement to approximately 686cc when paired with the factory stroke crankshaft.
- Q: Is the head stud kit included?
A: Yes. A Talon Titanium cylinder head stud kit is included and backed by a Lifetime Warranty*.
- Q: Does this include gaskets and timing components?
A: Yes. A full Cometic big bore top-end gasket kit, MLS head gasket, heavy-duty timing chain, billet cam chain tensioner, and tensioner gasket are included.
🌟 Why Buy from BPRATV? 660 Performance Specialists 🌟
At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. We engineer complete big bore systems that are built to handle real-world abuse and high-performance riding. Trust BPRATV to keep your Yamaha Raptor, Rhino, or Grizzly 660 running at its best, every single time.
Upgrade to 686cc Nikasil power today and feel the difference!
BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!
© BPRATV LLC 1-year limited warranty from the manufacturer for material or workmanship defects.*
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 [e.g., vehicle code §§ 27156 and 38391]. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or rights of way maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who purchase this product represent and warrant that the product is purchased only in connection with EPA-certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law.
