QITUEX TPU Inner Tubes 700C x 32-47C — 2-Pack, 45mm Metal Presta Valves with Removable Core

These are a pair of lightweight TPU inner tubes for 700C gravel tires (32–47C) with durable metal Presta valves and removable brass cores, plus a repair patch kit for roadside fixes.

QITUEX Ridenow TPU inner tubes combine thermoplastic polyurethane construction and metal Presta valves to give gravel riders a resilient, low-weight spare suitable for racing or weekend adventures. The 45 mm valve length fits most deeper rims, while the detachable valve core and included patch kit let you service and repair tubes without replacing them immediately. Built to resist punctures, temperature swings, and repeated inflation, this two-pack aims to be a practical upgrade or reliable backup for riders who want better performance than standard butyl tubes.

How do these TPU tubes perform compared with standard butyl tubes?

TPU offers a different balance of weight, elasticity and puncture resistance than traditional butyl rubber. Expect lighter mass and improved abrasion resistance while retaining good air retention when properly installed and inflated.

• Weight around 45 g per tube, reducing rotational mass.
• Higher resistance to cuts and abrasion versus basic butyl formulations.
• Stable across a wider temperature range for consistent pressure hold.
• Requires correct initial inflation procedure to avoid overstretching.

What makes the metal Presta valve and removable core useful?

The high-strength aluminum valve body is lighter than traditional brass valves and resists corrosion; the detachable brass core allows easy replacement or insertion of sealants and valve extensions. That versatility is handy for tubeless conversions, high-profile rims, or quick roadside maintenance.

• 45 mm valve length suits mid-to-deep rims; 65 mm options available for deeper rims.
• Replaceable core simplifies adding sealant or swapping a damaged core.
• Better airtightness and long-term stability compared to lower-grade valves.
• Compatible with threaded valve extenders and most Presta pump heads.

How should I install and inflate these TPU inner tubes safely?

TPU can overstretch if inflated outside the tire; following a careful installation and break-in routine prevents bulging and ensures a correct fit. Begin with a partial inflation, seat the bead, then finish to riding pressure.

• Start with ~0.5 PSI to help the tube conform to the tire wall before fitting fully.
• Do not exceed 5 PSI (0.35 bar) during the bare-tube inflation test.
• Inspect the rim and tire for debris; ensure the tube isn't pinched under the bead before final inflation.
• Use the removable core when adding sealant or fitting valve extenders.

What repair and compatibility options are included?

Each pack includes a repair patch kit so you can address small punctures on the trail and delay or avoid a full tube swap when conditions allow. The tube design is broadly compatible with 700C gravel tires sized 32–47C and works across a variety of rim depths thanks to valve length options.

• Two tubes in the pack provide an immediate spare for bikepacking or long rides.
• Patch kit included for emergency roadside repairs and temporary fixes.
• Anti-puncture and temperature resistance improves reliability in varied climates.
• Valve core replacement compatibility increases serviceability and lifespan.

Who is this for: riders who want lighter, more durable spare inner tubes for gravel and mixed-surface riding — racers looking to reduce rotational weight, commuters who need dependable spares, and bikepackers who appreciate a repairable, serviceable tube. If you use 700C tires between 32C and 47C and prefer a metal Presta valve with a removable core for sealant or valve extensions, this QITUEX two-pack offers a practical, long-lasting choice.