Moose Offroad Valve and Spring Kit (Exhaust) 0926-3478 — Yamaha Raptor 660R 2001-2005

Moose Offroad Valve and Spring Kit (Exhaust) 0926-3478 — 2001–2005 Yamaha Raptor 660R

Product Description

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The Moose Offroad Exhaust Valve and Spring Kit 0926-3478 features a premium stainless steel conversion designed to upgrade your Yamaha ATV valvetrain. Engineered to exceed factory specifications, this kit extends component lifespan and improves overall flow dynamics under demanding riding conditions.

Built using advanced Finite Element Analysis (F.E.A.) software along with specialized camshaft analysis and spring design tools, every component is rigorously engineered for precision and consistent performance. Manufactured in the USA, this kit provides reliable durability over standard OEM titanium parts.

Top Features: Moose Offroad Valve and Spring Kit

• Features a durable stainless steel conversion.
• Extends the lift of the valvetrain and related components by as much as 4 times over OEM titanium parts.
• Designed to flow and perform better than OEM components.
• Created using Finite Element Analysis (F.E.A.) software, as well as proprietary camshaft analysis and spring design software to ensure consistent performance and accurate designs.

Please review the detailed compatibility data below to ensure an exact fitment match for your vehicle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Is this kit designed for the intake or exhaust side?
A: This kit is specifically engineered for the exhaust valves.

Q: What material are the components made from?
A: This kit utilizes a high-durability stainless steel conversion.

Expert Pro-Tip

Expert Pro-Tip: When upgrading to a stainless steel valve and spring kit, always check and adjust your valve clearances carefully during installation. Ensure proper seat pressure is maintained to maximize service life and prevent valve float.

Recommended Pairings:

• Yamaha Raptor Sport Quads Performance Parts & Upgrades
• All Quads/ATV Performance Parts
• Motorcycle Tools

About Moto-House MX

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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