Description
Product Overview
The Lunwag rear brake disc rotor is engineered for Yamaha Raptor 660R models (2001‑2005). Constructed from stainless steel 420, the rotor provides exceptional heat dissipation, reducing the risk of brake fade during prolonged use. With a precise 220mm outer diameter, 58mm inner bore, and 3.5mm thickness, it matches OEM specifications (2GU258315100, 2XJ-25831-50-00) for a seamless fit. The rotor’s flatness is achieved through precision grinding, delivering consistent contact with brake pads for smooth, reliable stopping.
![[Product front view showing all components]](https://www.morvra.store/wp-content/uploads/2026/06/f534c113fe504f15b0f5d62a1156f50b.jpg)
Usage
Designed for off‑road enthusiasts, this rotor excels in demanding environments such as trail riding, mud bogging, and high‑speed desert runs. It is ideal for riders who need dependable braking performance on rugged terrain and during extended rides where heat buildup is common. Compatible with the Yamaha Raptor 660R, it also fits a range of other Yamaha ATVs, making it a versatile upgrade for multiple models.
Why Choose Us
Lunwag combines rigorous manufacturing standards with premium materials to ensure each rotor meets strict quality criteria. Our stainless steel 420 composition resists corrosion and maintains structural integrity under high temperatures. Each unit undergoes thorough inspection for flatness and dimensional accuracy, guaranteeing a perfect match to OEM tolerances. Backed by responsive customer support, we provide peace of mind with easy returns and technical assistance.
Key Features
- High‑grade stainless steel 420 for superior durability and corrosion resistance.
- Precision‑ground surface ensures even brake pad contact and consistent stopping.
- Optimized heat dissipation reduces brake fade during long, demanding rides.
- Exact OEM dimensions provide a direct, hassle‑free replacement.
- Dedicated customer service team ready to assist with installation and fitment questions.
FAQ
Will this rotor fit my Yamaha Raptor 660R?
Yes, the rotor is designed specifically for Yamaha Raptor 660R models from 2001 to 2005 and matches all OEM part numbers.
What is the benefit of stainless steel 420?
Stainless steel 420 offers excellent corrosion resistance and maintains strength at high temperatures, extending the rotor’s service life.
Do I need new brake pads when installing this rotor?
While not required, we recommend using new brake pads to ensure optimal performance and even wear.
How does heat dissipation improve braking?
Effective heat dissipation prevents the rotor from overheating, which maintains consistent friction and reduces the chance of brake fade.
What is the warranty on this product?
Lunwag provides a one‑year limited warranty covering manufacturing defects and material failures.




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