CYCLAMI MTB bicycle inner tube made of ultralight TPU material, available in sizes 24 inch 1.9-2.5, 26 inch 1.9-2.5, 27.5 inch 1.9-2.5, and 29 inch 1.9-2.5, with FV45 Presta valve, includes 2 tire patches, compatible with rim brakes and disc brakes, suitable for mountain bike and MTB tires.

Cyclami MTB inner tube size chart for 24 26 27.5 29 inch wheels, FV45 valve, with CE alcohol prep pads

Cyclami airtight MTB inner tube with hidden reinforcement process and anatomical drawing showing higher cost manufacturing technology

Cyclami MTB inner tube reinforced nozzle interface process, prevents air leakage at valve connection point

Bright green flexible Cyclami MTB mountain bike inner tube on dark background, bendable anti-burst bicycle replacement tube, circular close-up inset of virgin transparent rubber pellet raw material, heavy duty puncture resistant bike inner tube

CyCyclami ultralight green TPU mountain bike inner tube 2 pack set with 4 tire repair patches, FV45 Presta valve bicycle tube fits 24/26/27.5/29 inch MTB tires

Cyclami ultralight green TPU mountain bike inner tube 4 pack set with 8 tire repair patches, FV45 Presta French valve bicycle tube kit for 20-28 inch MTB tires

Accessories

Reinforced TPU MTB Inner Tube – Cyclami 24″ 26″ 27.5″ 29″ with Presta Valve

SKU: N/A Category: Accessories

Guaranteed Safe Checkout

🚀 Direct Shipping from China (Est. 7-14 Days): Orders are dispatched directly from our hub with end-to-end tracking delivered straight to your doorstep within 7-14 business days.
🔧30 days quality warranty, except for physical damage and wrong operation.

Detail

CYCLAMI 65g Ultralight TPU Mountain Bike Inner Tube | FV45 Presta Valve, Fit 26/27.5/29 Inch MTB Tires 1.9-2.5 Width

Core Upgrade: Shed Wheel Weight, Boost Your Riding Performance

Losing weight on your wheelset brings immediate upgrades to every ride. Our TPU inner tube only weighs around 65g, drastically reducing unsprung rotating mass on your mountain bike.

With less weight on your rims, you’ll enjoy snappier acceleration, sharper handling, and noticeably faster climbing speed on trails, hills and uphill sections. Perfect for cross-country, trail and downhill mountain bikers chasing lightweight performance gains.

Ultra Compact Foldable Design, Easy To Carry On All Adventures

Made of thin, flexible premium TPU material, this inner tube folds down into a tiny roll that easily slips into your backpack, jersey pocket or saddle bag.
No bulky rubber bulk to weigh you down on long-distance rides, bikepacking trips or weekend mountain excursions. It also delivers enhanced puncture resistance compared to standard butyl rubber tubes for reliable off-road use.

All-Temperature Stable Tire Pressure, Safe For Downhill Rides

Our upgraded TPU formula delivers outstanding heat and cold resistance. Whether you ride in hot summer sun or cold mountain winters, the tube maintains consistent, stable tire pressure without softening or deforming.
Steady air pressure eliminates sudden pressure drops during fast downhill descents, greatly lowering the risk of pinch flats and blowouts to keep your trail riding safe.

8 All-Round Advantages Of Premium TPU Material

We build this inner tube from high-performance TPU with 8 key functional benefits over traditional rubber tubes:
✅ Heat resistant & cold hardy for year-round cycling
✅ High elasticity, fits wide 1.9–2.5 tire width range
✅ Tear-resistant, tough against trail debris and sharp rocks
✅ Only 65g ultralight to cut wheel rotational weight
✅ Long-lasting anti-age material, slow air leakage
✅ Recyclable eco-friendly construction
✅ Ultra compact foldable for convenient storage
✅ Low rolling resistance for smoother, faster rides

One-Piece Seamless Molding, Superior Puncture & Leak Resistance

This mountain bike tube adopts one-piece integrated molding craft. There are no long circumferential seams around the tube body — only a single ring joint around the presta valve base.
Fewer seams directly reduce air leakage risks and weak points prone to punctures on rough mountain trails. The raw TPU granular material delivers robust anti-puncture performance against thorns, gravel and sharp trail obstacles.

Triple-Reinforced Presta Valve, 2000+ Pull Tested Leakproof

The presta valve nozzle is the most vulnerable part of regular inner tubes — we solved this with triple-layer reinforced sealing at the valve-tube connection.
Passed strict lab pull testing: it stays airtight even after over 2000 hard pulls and twists during installation, removal or trail bumps. No air leaks or tearing at the valve base to extend your tube’s service life.

Size Matching Guide: Find The Perfect Fit For Your MTB

Not sure which size fits your mountain bike? Simply check the printed specifications on the sidewall of your outer tire.
Each TPU inner tube has flexible elasticity to cover a wide width range:

TB 26”: Fits tire width 1.9 / 2.0 / 2.1 / 2.2 / 2.3 / 2.4 / 2.5
MTB 27.5”: Fits tire width 1.9 / 2.0 / 2.1 / 2.2 / 2.3 / 2.4 / 2.5
MTB 29”: Fits tire width 1.9 / 2.0 / 2.1 / 2.2 / 2.3 / 2.4 / 2.5
Compatible with both rim brake and disc brake mountain bike wheelsets.

Valve Cap Note: Two Styles Shipped Randomly

Each package includes a presta valve cap, with two different cap designs supplied randomly (transparent plastic cap & green metal knurled cap). Both caps fit the FV45 presta valve perfectly and offer full dust & moisture protection for your valve core.

Complete Step-by-Step Installation Tutorial

Critical Pre-Install Warning

Never fully inflate the empty tube before fitting it inside your tire. Inflating over 8PSI without outer tire wrapping will cause irreversible bulging and permanent damage to the TPU tube.
Always inflate to only 0.5 bar first to check for air leaks before full installation.

Full Product Specifications

Important Daily Use & Maintenance Notes

Who This Inner Tube Is For

✅ Cross-country mountain bikers chasing lightweight upgrades
✅ Bikepacking & trail riders needing compact spare tubes
✅ Downhill cyclists seeking stable all-temperature tire pressure
✅ All MTB owners with 26/27.5/29 inch wheels (1.9–2.5 tire width)
✅ Riders tired of heavy, leak-prone standard butyl inner tubes

Final Selling CTA

Upgrade your mountain bike’s performance with CYCLAMI ultralight TPU inner tubes — lighter, tougher, more portable and reliable for every off-road adventure. Pick your wheel size and cut unnecessary wheel weight today!