Cometic 98mm 99mm Top End Gasket Kit MLS + Kibblewhite Viton Seals WR450F '07-15
C3178,C3178-EST,C3279-EST,2S2-11181-00-00,2S2-11351-00-00, 2S2-11181-00-00, 2S2-11351-00-00 4FM-12213-00-00, 3VD-14613-01-00, 33M-12119-00-00, 4SV-12119-00-00
🔥 Yamaha YZ450F / WR450F / YFZ450R 98mm 99mm Big Bore Cometic Top End Gasket Kit + Viton Seals 🔥
🛠️ Product Overview
Built for power and reliability, this Cometic 98mm/99mm Big Bore Top End Gasket Kit is designed to support high-performance upgrades on Yamaha 450cc engines. Combined with Kibblewhite Precision’s Legendary Red Viton valve stem seals, this complete top end solution ensures long-lasting sealing under high-compression, high-RPM builds.
✅ What’s Included
- Cometic MLS Cylinder Head Gasket – 98mm bore, 0.027" thick, multi-layer steel design
- Base Gasket – OEM match for fit and performance
- Tensioner Gasket
- Exhaust Gasket
- Kibblewhite Red Viton Valve Stem Seals (Qty 5) – High-temperature, high-performance seals
🚚 Model Fitment
• Yamaha YFZ450R & YFZ450X (Fuel Injected) – 2009 to 2025
• Yamaha WR450F – 2007–2009, 2011–2015
• Yamaha YZ450F – 2006–2009
🔁 OEM Replacement
Replaces OEM Part Numbers:
2S2-11181-00-00, 2S2-11351-00-00, 4FM-12213-00-00,
3VD-14613-01-00, 33M-12119-00-00, 4SV-12119-00-00
| Advantage | What It Means for You |
|---|---|
| Cometic MLS Technology | Superior seal at high compression and temperature |
| 98mm/99mm Big Bore Compatibility | Perfect fit for upgraded high-performance cylinders |
| Kibblewhite Red Viton Seals | Prevents oil leakage and resists extreme heat – no blue seal knockoffs |
| OEM Replacement | Direct replacement for multiple Yamaha part numbers |
| Made in USA | Reliable construction from trusted brands |
❓ FAQs
- Can I use this on stock bore? – No, this kit is for 98mm and 99mm big bore upgrades only.
- Are the valve seals genuine Kibblewhite? – Yes, you receive authentic Kibblewhite RED Viton seals.
- Is this kit complete? – Yes, includes all necessary gaskets and seals for a complete top end rebuild.
🌟 Why Buy from BPRATV?
BPRATV – The Best Parts. The Best Performance. The Best Price.
We only sell brand-new, top-tier components from the best names in the industry.
BRAPPPPPPPPPP!
Power up your YFZ450R or WR/YZ450F with this top-tier gasket + seal combo kit! 🏁
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