RFX Pro Res Cap Kit (Blue) Yamaha YZ125/250 08-22 YZF250 07-22 YZF450 08-22 RFX Pro Series Reservoir Covers are CNC machined from aerospace aluminium and are a perfect factory style replacement to your standard reservoir covers. Features: CNC machined from aerospace grade aluminium. Tighter tolerances than OEM cast part. Highly polished then colour anodised for that factory look. Laser etched RFX logo. Available in a variety of colours for a wide range of models. Also available KTM clutch reservoir covers to accept standard hot start levers.