PIVOTRAX Inner Tube 70/100-17 (2.50/2.75-17) Pit Bike Tube — 2mm Reinforced Butyl, TR4 Valve

PIVOTRAX 70/100-17 (2.50/2.75-17) heavy-duty inner tube is a reinforced 2mm butyl replacement with a TR4 valve stem engineered for reliable air retention on pit bikes, motocross, and off-road machines.

If you ride small-displacement dirt bikes, pit bikes, or mopeds and need a tougher, longer-lasting tube, this PIVOTRAX inner tube was built for that purpose. It fits both 70/100-17 and 2.50/2.75-17 tires and is made from thick butyl rubber to stand up to rocks, roots, and repeated rim service. The straight TR4 valve is reinforced to resist bending and leaks during high-PSI setups and frequent tire swaps.

Will this inner tube fit my bike’s tire size?

Yes — the tube covers two common size stamps used on small off-road wheels. It suits 70/100-17 tires and tires marked 2.50/2.75-17, which are typical on many pit bikes and youth motocross models.

• Compatible: 70/100-17 and 2.50/2.75-17 tire sizes.
• OEM fit: Designed for a range of pit bikes and small motocross models.
• Check: confirm rim diameter 17" and tire width before ordering.

How durable is the 2mm reinforced butyl construction?

The thicker 2mm butyl compound increases puncture resistance and resists stretching under higher pressures, giving the tube a longer service life than standard thinner tubes. It balances flexibility for installation with toughness to handle off-road impacts.

• 2mm butyl: thicker wall for enhanced puncture and abrasion resistance.
• Flexible enough for standard tire mounting and seating.
• Better air retention over time compared with thinner consumer tubes.

What advantages does the TR4 straight valve offer?

The reinforced TR4 valve stem is built to minimize leaks and bending during use and maintenance. Its seamless construction helps it endure frequent tire changes and high-PSI settings commonly used in off-road riding setups.

• TR4 straight valve: sturdy for high-PSI and repeated handling.
• Reduced valve bending and leak risk when using pumps or compressors.
• Compatible with standard valve caps and valve-core tools.

Which bikes and riding styles is this inner tube best for?

This tube is intended for motocross, enduro, pit bike, and general off-road riding where durability matters. It performs well on trails, tracks, and recreational off-road terrain, giving riders dependable air retention and resistance to common off-road hazards.

• Fits Honda CRF125/150, CR85 models and similar small-displacement bikes.
• Also fits Suzuki DRZ125/RM85, Kawasaki KX85/KLX125-140, Yamaha TTR125/YZ85.
• Works for many pit bikes and Chinese-manufactured bikes like Baja, Coolster, TaoTao.

Who is this for? If you maintain a youth motocross or pit bike, ride off-road trails, or swap tires regularly and need a dependable inner tube that reduces flats and valve failures, this PIVOTRAX reinforced butyl tube is a practical upgrade. It’s useful for hobby riders and racers who want a stronger tube than stock options, shop owners who stock replacement inners, and anyone seeking a reliable spare for remote outings. Before ordering, verify your wheel diameter and tire width match 17" rims with tire markings of 70/100-17 or 2.50/2.75-17.