GOOFIT
Voltage Regulator Rectifier for Yamaha TTR 50/90/110/125/230 & Kawasaki KLX450R | 21066-0015
Voltage Regulator Rectifier for Yamaha TTR 50/90/110/125/230 & Kawasaki KLX450R | 21066-0015
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GOOFIT Off-Road Series – Heavy-Duty Voltage Regulator
Reliable power for every trail. The GOOFIT Voltage Regulator Rectifier is a precision replacement engineered for high-performance dirt bikes and trail machines. Whether you're maintaining a Yamaha TTR series pit bike or a Kawasaki KLX450R, this regulator ensures your electrical system remains stable. It prevents battery overcharging and protects your lighting from voltage spikes, making it an essential component for both competition and recreational riding.
Designed with heavy-duty heat dissipation in mind, this unit features an aluminum alloy housing with integrated cooling fins. This architecture allows the regulator to maintain superior heat resistance, ensuring it won't fail even under the high-temperature conditions of a hard-working engine.
Product Compatibility
This compact regulator is a direct replacement for:
- Kawasaki Models: KLX450 R (2008–2017)
- Yamaha Models: TTR 50, TTR 90, TTR 110, TTR 125, TTR 230 (2003–2017); DT125R (1999–2003)
- OEM Part Number: 21066-0015
Key Technical Specifications:
- Dimensions: 40mm x 38mm x 26mm (1.57" x 1.5" x 1.02").
- Housing: Thermal-stabilized Aluminum Alloy.
- Cooling: Integrated external fins for passive heat management.
- Build: Impact-resistant and dustproof.
Why Choose the GOOFIT Heavy-Duty Regulator?
- Thermal Endurance: The aluminum cooling fins provide superior heat resistance, drawing heat away from internal electronics to prevent the "melt-down" failures common in budget plastic regulators.
- Stable Electrical Output: Calibrated to ensure a steady charging current, keeping your battery healthy and your headlights bright across all RPM ranges.
- Compact Footprint: Measuring just 40mm in length, this regulator fits perfectly in the tight mounting spaces of dirt bike frames without interfering with other engine components.
- Off-Road Ruggedness: Specifically designed to withstand the high vibrations, dust, and moisture associated with trail and motocross riding.
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Fitment FAQ
Will this part fit my specific model and year?
This voltage regulator rectifier is intended for This compact regulator is a direct replacement for; Kawasaki Models: KLX450 R (2008–2017); Yamaha Models: TTR 50, TTR 90, TTR 110, TTR 125, TTR 230 (2003–2017); DT125R (1999–2003); OEM Part Number: 21066-0015. It is best matched to original part number(s) 21066-0015. Key physical/spec details from the product data include 40mm, 38mm, 26mm. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. Match your original part number to 21066-0015 before purchase. For this voltage regulator rectifier, also compare the OEM number, plug shape, pin count, mounting-hole distance, heat-sink style, and AC/DC charging-system type. This is especially important for Yamaha/Kawasaki KLX450R/KLX450/DT125R models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this voltage regulator rectifier for machines outside the listed compatibility, or for units with different pin counts, plug shapes, AC/DC system types, or mounting-hole spacing. If your original part number does not cross-reference with 21066-0015, treat the fitment as unconfirmed. Model years outside 2008–2017, 2003–2017, 1999–2003, 2008, 2017 should be verified separately. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the OEM number, plug shape, pin count, mounting-hole distance, heat-sink style, and AC/DC charging-system type. Confirm OEM/cross-reference number(s): 21066-0015. Recheck listed specs such as 40mm, 38mm, 26mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.