Home / Honda / TRX250R / Engine / CR500 Main Bearing CR500 Main Bearing$29.95 CR500 8 ball main bearing. CR500 Main Bearing quantity Add to cart Categories: Engine, Honda, TRX250R Description Description CR500 8 ball main bearing. Related products EngineHonda TRX250R Bottom End Kit TRX250R Bottom End Kit HondaTransmission & Clutch Hinson Works Clutch Basket for TRX250R For TRX250R ExhaustHonda TRX250R Small Bore Exhaust 250C LED 250C pipe. For engine sizes 250-310. Best for dunes, MX, flat track, and play riding. Raw finish HondaTransmission & Clutch TRX250R Transmission Bushing Kit For 87-89 TRX250R.