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 ExhaustHonda TRX250R Big Bore Pipe 350D LED 350D exhaust. For use with motor sizes of 330-390 For cross country, MX and trail riding applications. Price is for the pipe only. HondaTransmission & Clutch TRX250R Transmission Bushing Kit For 87-89 TRX250R. HondaIntake 1986 TRX250R Stainless Steel Intake For 1986 TRX250R only. HondaIntake 1987-89 TRX250R Stainless Steel Intake For 1987-89 TRX250R only.