RFX Pro Throttle Tube (Black) Honda CRF250 450 02 25 CRFX RX250 450 04 25 Adventure Rider 5 Junior Chest Protector combines BOLT ENGINE YZ4 5 Junior Chest Protector combines the best of soft and hard shell protection by making use of deflecting hard shell as well as 3DF AirFit soft impact foam Polisport front fenders are produced with Polisports exclusive technology making them more durable Slide the rubber boot down and disassemble the throttle housing Cover the hole in the end of the grip with some electrical tape (To stop glue entering the throttle barrel) and apply a small amount of RFX grip glue to the outer end of the throttle tube on the outside diameter