QITUEX 700C TPU Inner Tubes — 2-Pack for 32-47C Gravel, 45mm Metal Presta & Repair Kit

QITUEX 2 Pack Ridenow TPU inner tubes are lightweight, puncture-resistant 700C tubes for 32–47C gravel tires, fitted with 45mm metal Presta valves and a detachable brass core, and include a repair patch kit.

These high-performance inner tubes use thermoplastic polyurethane (TPU) to deliver a balance of low weight and strong durability suited to gravel, cyclocross, and road setups. Each tube weighs roughly 45g and installs like a standard tube while offering better tear resistance, wider temperature tolerance, and improved air retention compared with many butyl alternatives. The metal Presta valve and removable brass core make inflation, tubeless adapter use, and valve maintenance straightforward for riders who demand reliability on varied terrain.

How does TPU help when riding gravel and mixed surfaces?

TPU material combines elasticity with puncture resistance, resisting cuts and abrasions encountered on gravel roads and trails. It also remains stable over a broad temperature range so pressure changes are less dramatic during prolonged rides or seasonal transitions.

• High tear and abrasion resistance for rough roads
• Thin, lightweight construction saves rotational mass
• Good temperature stability for consistent pressure
• Improved air retention compared to many lightweight butyl tubes

What do the metal Presta valve and detachable brass core offer?

The high-strength aluminum valve body and removable brass core simplify pump attachment, CO2 inflation, and conversion for valve extenders. Metal construction adds corrosion resistance and a tighter seal versus basic plastic valves, reducing leak risk during long rides.

• 45mm valve length fits most rims without extension
• Removable core for CO2 cartridges and easier maintenance
• Aluminum valve body for durability and airtightness
• Compatible with threaded valve extenders and tubeless adapters

How do I install and inflate these TPU tubes safely?

Start with a partial inflation (about 0.5 PSI) to settle the tube inside the tire, then fit the tire bead and rim without pinching. Do a short bare-test inflation not exceeding 5 PSI (0.35 bar) when the tube is outside the tire, and always verify the tube isn’t pinched before fully inflating to riding pressure.

• Initial fill: 0.5 PSI to shape the tube inside the tire
• Outside-the-tire test: do not exceed 5 PSI (0.35 bar)
• Check rim and tire bead for debris before final inflation
• Replaceable core allows easy top-ups or CO2 use

What sizes and compatibility should I expect with this 2-pack?

Each pack contains two tubes sized for 700C wheels and nominal tire widths from 32C to 47C, accommodating many gravel, hybrid, and touring tire options. Valve lengths include a 45mm standard; 65mm lengths are also available for deeper-section rims, ensuring broad compatibility with modern wheelsets.

• Fits 700C tires from 32C to 47C
• 45mm valve length standard; longer valves available separately
• Compatible with rims that accept Presta valves and valve extenders
• Includes a repair patch kit for roadside fixes

Who is this for: Riders who want a lightweight, durable inner tube for gravel, commuting, or fast road rides where reducing weight matters but reliability cannot be sacrificed. The QITUEX Ridenow TPU tubes suit cyclists upgrading from heavy butyl tubes, racers seeking lower rotational mass, and touring riders who appreciate the replaceable valve core and included patch kit for on-the-go repairs. If you use deep rims, look for the longer 65mm valve option to ensure a proper fit.