Yamaha Raptor 660 Big Bore 102mm 102 686 719 Cometic Top End Head Gasket C7798

Cometic C7798 Yamaha Raptor 660 Rhino Grizzly 660 102mm 686 719 Big Bore Top End Gasket Kit

📖 Product Description

Restore your high-performance Yamaha engine with the Cometic C7798 Complete Top End Big Bore Gasket Kit. Specifically engineered for 102mm bore 686cc and 719cc big bore and stroker engines, this premium gasket kit delivers exceptional sealing performance for demanding ATV and UTV applications. Featuring a durable .030" Multi-Layer Steel (MLS) Cylinder Head Gasket, this kit is designed to withstand higher cylinder pressures, increased compression, and extreme engine temperatures commonly found in modified engines.

Manufactured in the USA by Cometic Gasket, every gasket is precision-cut from premium materials to provide OE-quality fitment with race-proven durability. Whether you're rebuilding your engine or completing a 686cc or 719cc performance upgrade, this complete top end gasket kit provides the sealing reliability your Yamaha deserves.

🔥 Key Features & Benefits

• Designed for 102mm bore 686cc and 719cc big bore & stroker engines
• Includes .030" MLS cylinder head gasket for superior combustion sealing
• Complete top end gasket kit for engine rebuilds and performance upgrades
• Premium materials resist heat, pressure, and fluid leaks
• Precision manufactured by Cometic for excellent fit and durability
• Made in the USA

📦 Product Contents

• Complete Cometic top end gasket kit
• 102mm bore .030" MLS cylinder head gasket
• Cylinder base gasket
• Valve cover gasket
• Cam chain tensioner gasket
• O-rings and top end sealing components required for installation

✅ Compatibility

Designed for Yamaha 660 engines equipped with 102mm 686cc or 719cc big bore kits.

• Yamaha YFM660R Raptor (2001-2005)
• Yamaha YXR660F Rhino 660 (2004-2007)
• Yamaha YXR660F Rhino Ducks Unlimited (2007)
• Yamaha YXR660F Rhino Exploring Edition (2006-2007)
• Yamaha YXR660F Rhino Special Edition (2006-2007)
• Yamaha YXR660F Rhino Sport Edition (2007)
• Yamaha Grizzly 660 (All Years)
• Fits 102mm 686cc & 719cc Big Bore and Stroker Kits
• Replaces OEM Part Numbers: 3YF-11181-00-00, 5KM-11351-00-00, 93211-01467-00, 4DW-12213-00-00

❓ FAQ

• Q: Will this fit a stock bore Yamaha 660 engine?

  A: No. This kit is designed specifically for 102mm bore 686cc and 719cc big bore or stroker engine builds.

• Q: What type of head gasket is included?

  A: The kit includes a premium .030" Multi-Layer Steel (MLS) cylinder head gasket for maximum sealing performance.

• Q: Is this a complete top end gasket kit?

  A: Yes. It includes the major top end gaskets, seals, O-rings, and the MLS head gasket required for a top end rebuild.

• Q: Where is this gasket kit manufactured?

  A: Cometic manufactures this gasket kit in the USA using premium sealing materials.

🌟 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 Raptor, Rhino, or Grizzly 660 running at its best, every single time. 

Upgrade your Yamaha big bore engine with Cometic's race-proven sealing performance--order yours 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.