MOOSE OFFROAD YAM-86-BL6 Blue Race Fit Radiator Hose Kit — Yamaha YZ450F / WR450F

MOOSE OFFROAD — Samco® Sport UK Engineering, Y-Piece Race Design, and Maximum Cooling Efficiency for Yamaha YZ450F and WR450F

Optimize your Yamaha’s cooling system with the MOOSE OFFROAD YAM-86-BL6 Race Fit Radiator Hose Kit. Specifically engineered for the high-performance YZ450F and WR450F, this kit features an advanced "Y-Piece" race design with an integrated alloy insert. By eliminating the standard plastic T-junctions found in OEM kits, this race-fit assembly provides a more direct, high-velocity coolant path that significantly reduces engine temperatures during aggressive motos or technical enduro sections.

Manufactured in the UK by Samco® Sport—the world leader in silicone hose technology—these hoses are hand-wrapped using three layers of premium reinforcement fabric. This triple-layer construction offers exceptional burst pressure resistance and superior protection against trail debris and crash impacts. Utilizing Zero Block tooling technology, the internal junctions remain clear and free of restrictive flashing, promoting maximum radiator efficiency. The UV-stable blue finish is color-matched to Yamaha factory racing standards and is guaranteed to withstand temperatures up to 356°F without fading.

• Y-Piece Race Design: Includes a high-flow alloy insert to eliminate restrictive OEM junctions and improve coolant circulation.
• Samco® Sport UK Manufactured: Hand-wrapped and 100% visually inspected by the world’s leading silicone experts.
• Triple-Layer Reinforcement: Provides elite-level burst pressure and enhanced resistance to punctures and abrasion.
• Zero Block Technology: Ensures smooth internal flow paths by removing dangerous manufacturing flashing.
• Extreme Heat Resistance: European-grade silicone remains stable and flexible under thermal loads up to 356°F.
• Yamaha Factory Blue: UV-stable pigments ensure your hoses stay vibrant and match your Yamaha’s aesthetics for years.

Moto-House MX Pro Tip:

The Yamaha 450 platform is known for its incredible power, but high horsepower creates high heat—especially in tight singletrack or deep sand. The MOOSE OFFROAD YAM-86-BL6 is a "Race Fit" kit, meaning it streamlines the cooling architecture for maximum performance. When installing, ensure the alloy Y-piece is positioned correctly for unobstructed flow. We recommend using a high-quality stainless steel silicone-specific clamp kit to avoid "pinching" the triple-layer silicone. For the ultimate cooling package, pair these hoses with a 1.6 or 1.8 Bar high-pressure radiator cap.

Year Range	Make	Model Fitment (450cc)
2020-2023	Yamaha	YZ450F
2019-2023	Yamaha	WR450F

FAQ Questions

Q) What is included in the "Y-Piece" design?
A) This kit replaces the standard multi-hose junction with a more efficient Y-configuration and includes a high-strength alloy insert for improved flow and durability.

Q) Does this kit come with clamps?
A) No, this kit includes the silicone hoses and alloy Y-piece only. We recommend purchasing a silicone-safe stainless clamp kit for installation.

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