New Olym inner tube set for 2.50-14 front & 3.00-12 rear — 60/100-14 & 80/100-12, 2mm wall & aluminum valve

New Olym inner tubes set includes a 60/100-14 (2.50-14) front and an 80/100-12 (3.00-12) rear tube designed for 90cc–125cc off-road and pit bikes.

This pair of replacement inner tubes from New Olym delivers a straightforward, heavy-duty solution for riders who need reliable inflation components for motocross, pit, and dirt rocket bikes. Made from high-quality rubber with a 2 mm wall thickness and aluminum straight valve stems, the set aims to resist punctures and keep tires sealed under varying off-road conditions. The kit comes with valve caps, spare valve cores, and a tool for quick maintenance, making it ready for both home repairs and trackside swaps.

Will these tubes fit my pit bike or mini motocross machine?

Compatibility covers many common pit and small-displacement motocross bikes. The front tube is sized 60/100-14 (also listed as 2.50-14) and the rear is 80/100-12 (3.00-12), matching wheel and tire sizes used on most 90cc to 125cc off-road models and a broad range of Chinese-brand pit bikes.

• Fits wheel/tire designations: front 60/100-14 (2.50-14), rear 80/100-12 (3.00-12).
• Compatible with brands: SSR, YCF, IMR, Atomik, Thumpstar and many others.
• Check your tire sidewall for the exact size stamp before ordering.

How durable and puncture-resistant are these inner tubes?

New Olym builds these tubes from premium rubber with a 2 mm thick wall, which improves resistance to common trail hazards and pinch flats compared with thinner tubes. The thicker material helps reduce punctures while the straight aluminum valve stem provides reliable sealing and easier inflation access.

• 2 mm tube wall for increased puncture protection.
• Aluminum straight valve stem resists corrosion and offers a solid seal.
• Includes spare valve cores and caps to replace worn or damaged parts quickly.

What comes in the package and how easy is installation?

The kit contains everything needed to swap tubes at home or on the trail: both front and rear tubes plus accessories for installation and maintenance. A valve core wrench and spare brass cores make it quick to reinstall and service without extra tools, while clear size markings speed up correct fitment.

• 1 front tube (60/100-14 / 2.50-14) and 1 rear tube (80/100-12 / 3.00-12).
• 2 red valve caps, 4 brass valve cores, and 1 valve core wrench included.
• Simple tire removal and installation steps—ideal for garage or trackside repairs.

Are there guarantees or special care instructions?

New Olym includes a quality assurance promise and a lifetime guarantee, helping protect your purchase against manufacturing defects. Standard care—keeping proper tire pressure, avoiding sharp debris, and inspecting rim tape and tire interior before installation—extends tube life and performance.

• Unconditional lifetime guarantee from the manufacturer for peace of mind.
• Inspect tires and rim strips before mounting to prevent damage to the new tube.
• Maintain correct pressure and replace cores or caps if they show wear.

Who is this for: Riders, mechanics, and hobbyists who maintain 90cc–125cc dirt, pit, or mini motocross bikes and need a dependable, ready-to-install inner tube kit. This set suits home workshops, race teams, and anyone who wants spares for trail-side repairs: it combines thicker rubber for durability, aluminum valve stems for reliable sealing, and a small accessories kit to keep you rolling.