Have Questions?
Upgrade your motorcycle’s braking performance with the RFX FXBD 40505 55BK Rear Brake Rotor, engineered for reliable stopping power and consistent operation. Manufactured from high-grade stainless steel, this rear rotor combines durability with a lightweight profile to help reduce unsprung weight and support responsive handling. The laser-cut construction delivers accurate fitment and dependable performance for demanding riding conditions.
The RFX rear brake rotor features a heat-treated design that helps withstand the effects of excessive brake pad wear. Its Comaxit metal-color surface treatment provides a durable finished surface, while the wave-style profile helps clean the brake pads during use. Precision-cut vent holes and the wave design promote heat dissipation, helping maintain braking consistency during repeated stops and high-temperature riding.
CAD-designed for strength, efficiency, and reduced weight, the RFX FXBD 40505 55BK is a practical replacement or performance-focused upgrade for compatible Yamaha motorcycles. Designed by RFX and identified by part number FXBD 40505 55BK, this rear brake rotor delivers dependable braking function with a clean, precision-manufactured finish.
Features:
- Laser cut from high-grade stainless steel for durability and precise construction.
- Heat-treated design helps withstand excessive brake pad wear.
- Comaxit coating provides a durable metal-color surface treatment.
- CAD-designed profile helps reduce unsprung weight for responsive handling.
- Wave design supports effective brake pad cleaning.
- Precision-cut vent holes and wave profile help dissipate heat.

