GOOFIT
Starter Motor for Yamaha YFZ450, YFZ450 LE, YFZ450 SE (2004–2013) | 5TG-81890-00
Starter Motor for Yamaha YFZ450, YFZ450 LE, YFZ450 SE (2004–2013) | 5TG-81890-00
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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.
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Fitment FAQ
Will this part fit my specific model and year?
This 12V starter motor is designed for Yamaha YFZ450 sport ATV models using the 5TG starter series, including standard YFZ450 models from 2004–2009 and 2012–2013, YFZ450 LE 2004, and YFZ450 SE 2005–2009. It is built as a 9-tooth clockwise replacement for the high-compression YFZ450 platform.
Do I need to match the OEM part number?
Yes. Please compare your original starter with Yamaha OEM references 5TG-81800-00-00 and 5TG-81890-00-00. Matching the OEM number is important because YFZ450, YFZ450R, YFZ450X, and special-edition Yamaha sport ATV models may use different starter designs across years.
What models or situations does this part not fit?
This starter may not fit YFZ450R, YFZ450X, or other Yamaha ATV models unless the OEM number, 9-tooth gear, clockwise rotation, mounting pattern, electrical terminal, and overall body length match your original unit. It should not be ordered based only on the YFZ450 name or 450cc engine size.
What should I check before ordering?
Before ordering, check the OEM number, 12V rating, 9-tooth drive gear, CW rotation, mounting ear position, electrical terminal style, starter body length, and clearance around the engine case. Compare the gear and mounting points with your original starter motor.