YFZ450R YFZ 450R 98mm 98 CUSTOM Forged Wiseco Piston +3 Big Bore MLS Gasket Kit

YFZ450R / YFZ450X 98mm Wiseco Big Bore Piston & Cometic Gasket Kit

🔥 Race-Built 98mm Big Bore Performance Upgrade

Upgrade your Yamaha with a precision-engineered 98mm Wiseco Forged Big Bore Piston Kit paired with a Cometic MLS Top End Gasket Set. Designed for maximum reliability, pump or race gas compatibility, and high-output performance, this kit transforms your YFZ450R / YFZ450X into a harder-hitting, faster-revving machine. All components are brand-new, USA-made, and built for riders who demand the best.

🔥 Key Features & Benefits

Every part in this kit is engineered to deliver race-ready durability while maintaining OEM-level fitment. Ideal for aggressive trail riding, dunes, racing, or replacing worn factory components with premium forged performance.

• Custom BPRATV Wiseco 98mm Forged Piston for maximum strength and heat stability
• High-compression 12.75:1 design for huge power gains
• Cometic MLS Big Bore Head Gasket for superior sealing
• Includes rings, wrist pin, and clips — complete top end solution
• All parts are 100% Made in the USA

✅ Compatibility

Designed exclusively for Yamaha’s fuel-injected sport ATV models. Perfect fitment, no guesswork, no mix-and-match issues.

• Yamaha YFZ450R (Fuel Injected)
• Yamaha YFZ450X (Fuel Injected)
• Exact Years: 2009–2025
• Direct bolt-on top end upgrade
• Uses pump gas or race fuel

❓ Frequently Asked Questions (FAQ)

• Q: Does this kit include everything needed for the top end?

  A: Yes. It includes the piston, rings, pin, clips, and a complete Cometic big bore top end gasket kit.

• Q: Do I need to run race fuel?

  A: No. This piston is compatible with pump gas, though race gas can be used for maximum performance.

• Q: Are these genuine Wiseco and Cometic parts?

  A: Yes — all components are brand-new, authentic US-made parts in factory packaging.

• Q: Is there a warranty?

  A: Yes. BPRATV provides a 1-year limited warranty for peace of mind.

🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟

At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. Every component we sell is tested, proven, and selected to deliver top-tier reliability and horsepower. Trust BPRATV to keep your Yamaha YFZ450R / YFZ450X running at its best, every single time.

Boost your power today — get your 98mm Wiseco Big Bore Kit now!

BPRATV - The Best Parts. The Best Performance. The Best Price.

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© 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 right-of-ways maintained by and open to the public. Purchasers who purchase this product represent and warrant that the product is purchased only in connection with EPA-certified, emission-regulation-exempt and noise-regulation-exempt competition/racing vehicles as interpreted under applicable state and/or federal law.