C3068 5TA-11181-00-00 5TA-11181-00-00 5TA-11181-00-00 5TA-11351-00-00 3VD-14613-01-00 4FM-12213-00 4SV-12119-00-00 33M-12119-00-00 90430-10171-00 90430-06014-00 90201-08087-00 93210-19758-00

YFZ450 98mm Big Bore Cometic Top End Gasket Kit + Viton Seals

Unleash Big Bore Power: Seal Your YFZ450 Engine Right!

Ready to push your Yamaha YFZ450 Carb model to its limits? This complete Cometic Top End Gasket Kit is precisely what you need to confidently seal your big bore engine builds! Designed for exceptional performance and reliability, this kit ensures a perfect, leak-free seal, letting you maximize every ounce of power from your ATV. Don’t compromise on your rebuild; trust the gaskets used by pros to keep your YFZ450 running strong and true, whether you’re hitting the track or tearing up the trails.

Precision Engineered for Big Bore Builds: Optimal Sealing & Durability!

This premium kit works flawlessly with ALL 97mm &98mm Big Bore Cylinders, including popular OEM and aftermarket options like Cylinder Works & Athena. It features a robust Big Bore MLS (Multi-Layer Steel) Head Gasket with a .027″ thickness and 98mm bore, engineered to handle the extreme pressures of high-performance and stroker applications. You’ll also receive a durable base gasket and chain tensioner gasket for a complete seal. Plus, we include high-quality Viton Valve Stem Seals (5), ensuring your top end performs flawlessly.

• One complete Cometic top end gasket kit for comprehensive sealing.
• Works on ALL 97mm &98mm Big Bore Cylinders (OEM or Aftermarket).
• Includes Big Bore MLS head gasket (.027″ thick, 98mm bore), base gasket, and chain tensioner gasket.
• Viton Valve Stem Seals (5) for optimal performance.
• Designed for 97mm &98mm Big Bore & Stroker Kits.

Wide Compatibility & USA Made: Get Back to Riding Faster!

This versatile gasket kit is specifically designed for Yamaha YFZ450 Carb Models ONLY (Years 2004, 2005, 2006, 2007, 2008, 2009, 2012, 2013). It also fits Yamaha YZ450F Dirt Bikes Years 2003, 2004, 2005, offering broad application for enthusiasts. Importantly, this kit is made in USA, guaranteeing top-notch manufacturing quality and materials.

• Fits Yamaha YFZ450 Carb Model ATVs (2004-2009, 2012-2013).
• Also fits Yamaha YZ450F Dirt Bikes (2003-2005).
• Made in USA for superior quality and durability.
• Directly replaces OEM Part# 5TA-11181-00-00, 5TA-11351-00-00, 33M-12119-00-00, 4SV-12119-00-00.
• DOES NOT WORK FOR YFZ450R OR YFZ450XFUEL INJECTED MODELS.

Why Buy from ? Your Powerhouse for ATV Parts!

At , we live by our commitment: The Best Parts. The Best Performance. The Best Price. This Cometic Top End Gasket Kit is a testament to our dedication, providing the quality and precision you need for a truly successful rebuild. Trust for top-tier components that will keep your YFZ450 roaring.

Seal your big bore build rightupgrade to Cometic with today!

– The Best Parts. The Best Performance. The Best Price.

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LLC

* YFZ450 98mm Big Bore Cometic Top End Gasket Kit Viton Seals USA Made NEW * Yamaha YFZ450 Carb 98mm Big Bore Cometic MLS Gasket Kit + Valve Seals * NEW YFZ450 97-99mm Big Bore Top End Gasket Kit Cometic + Viton Seals * YFZ 450 Carb 04-13 Big Bore Cometic Gaskets MLS Head Gasket Seals USA * Yamaha YFZ450 Cometic Top End Gasket Kit 98mm Big Bore ATV Quad Made USA — ### **Recommended eBay Product Category:** * Parts & Accessories > ATV, Side-by-Side & UTV Parts & Accessories > Engine & Drivetrain > Engine Rebuild Kits — ### **Recommended Secondary Category:** * Parts & Accessories > ATV, Side-by-Side & UTV Parts & Accessories > Engine & Drivetrain > Gaskets & Seals — ### **H1 Headings (Max 7 words):** * YFZ450 Big Bore Gasket Kit * Cometic YFZ450 Top End Seal * Ultimate YFZ450 Rebuild Gaskets * USA Made YFZ450 Gasket Kit * Power Up YFZ450 With Cometic — ### **Broad Match Keywords Used:** * **Yamaha YFZ450 Carb** models * **Cometic top end gasket kit** * **97mm, 98mm, 99mm Big Bore Cylinders** * **Cylinder Works & Athena** compatible * **Big bore MLS head gasket** * **Base gasket** * **Chain tensioner gasket** * **Viton valve stem seals** * **Made in USA** gaskets * **YFZ450 big bore** * **YFZ450 stroker kits** * **Kibblewhite Red Viton** * **YFZ450 ATV** * **YZ450F Dirt Bikes** * **Top end rebuild** * **Engine gasket set** * **YFZ 450 parts** * **ATV performance gaskets** * **OEM replacement gaskets** — ### **Meta Title:** YFZ450 Carb: Cometic Big Bore Gasket Kit + Seals – 98mm Power! — ### **Meta Description:** Upgrade your Yamaha YFZ450 Carb with our Cometic 98mm Big Bore Top End Gasket Kit! Includes MLS head gasket & Viton valve stem seals. Made in USA for peak performance on all 97-99mm cylinders. — ### **OEM Cross Reference:** OEM Cylinder Head Gasket replaces: 5TA-11181-00-00. OEM Base Gasket replaces: 5TA-11351-00-00. OEM Valve Stem Seals replace: 33M-12119-00-00, 4SV-12119-00-00. (Note: The Cometic kit replaces the full set of top end gaskets, including these OEM components for compatible big bore applications.)