RFX Pro HD Front Inner Tube (2.5mm/TR4) 275/300-21 RFX Pro Series Heavy Duty Inner tubes are available in 2 different thicknesses, 2.5mm and 4mm. The increased thickness provides outstanding...

RFX Pro UHD Front Inner Tube (4mm/TR4) 275/300-21

RFX Race Rear Inner Tube (1.5mm/TR4) 300/325-12 RFX Race Series inner tubes are a good heavy duty inner tube. Available in a multitude of sizes.

RFX Race Front Inner Tube (1.5mm/TR4) 225/250-17 RFX Race Series inner tubes are a good heavy duty inner tube. Available in a multitude of sizes.

RFX Race Front Inner Tube (1.5mm/TR4) 225/250-14 RFX Race Series inner tubes are a good heavy duty inner tube. Available in a multitude of sizes.

RFX Race Rear Inner Tube (1.5mm/TR4) 350/400-14 RFX Race Series inner tubes are a good heavy duty inner tube. Available in a multitude of sizes.