Starter Motor for Yamaha YFZ450, YFZ450 LE, YFZ450 SE (2004–2013) | 5TG-81890-00

GOOFIT High-Performance Racing Starter – Yamaha YFZ450 Series

Engineered for the holeshot and the heat of competition. The GOOFIT 12V Performance Starter Motor is a premium-grade replacement specifically designed for the high-compression Yamaha YFZ450 platform. Built to meet or exceed OEM 5TG-81890-00 specifications, this motor provides the ultra-high rotation speed necessary to ignite a 450cc racing engine instantly, ensuring you spend less time cranking and more time riding.

Adopting a specialized protective metal coating, this starter is engineered for superior wear resistance and high-speed efficiency. The optimized internal armature provides a powerful drive to the flywheel, effectively reducing startup delays even in the demanding environments of motocross tracks or sand dunes.

Product Compatibility

This motor is a direct bolt-on replacement for the following Yamaha sport ATVs:

• Yamaha YFZ450: Standard models (2004, 2005, 2006, 2007, 2008, 2009, 2012, 2013).
• Yamaha YFZ450 LE: Limited Edition (2004).
• Yamaha YFZ450 SE: Special Edition (2005, 2006, 2007, 2008, 2009).
• OEM Part Number Cross-Reference: 5TG-81800-00-00 and 5TG-81890-00-00.

Key Technical Specifications:

• Voltage: 12V DC.
• Drive Gear: 9-Tooth Spline.
• Rotation: CW (Clockwise).
• Finish: Anti-corrosive metal coating for extreme off-road durability.

Why Choose the GOOFIT YFZ450 Performance Starter?

• Ultra-High Rotation Speed: Specifically tuned for the fast-cranking requirements of a 450cc racing engine. It delivers high horsepower at startup to overcome the resistance of high-compression pistons.
• Pro-Level Sensitivity: The high-sensitivity internal design responds instantly to the start button, drawing power efficiently to preserve your battery's Cold Cranking Amps (CCA).
• Ruggedized Metal Coating: The specialized exterior coating acts as a shield against sand, mud, and water, ensuring the motor remains rust-free and functional through the harshest race conditions.
• Drop-In Fitment: Designed as a true "plug-and-play" replacement for OEM 5TG-81890-00. The mounting points and spline interface match factory dimensions exactly for a fast, hassle-free installation.