09-19 YAMAHA YFZ450R: ITP A-6 Pro Wheel (Rear / 10X8 4/115 3+5) All new heat-treated T-6061 aluminum. 6061 heat-treated aluminum intensifies wheel hardness and strength. Tough 0.190" wall construction. Center design is lighter than ever, yet still as strong. Fully-polished finish looks great, thanks to the use of new, state-of-the-art CNC spinning and polishing equipment.