gravel bike luftdruck 40mm Eclipse Performance Gravel tube

gravel bike luftdruck 40mm Eclipse Performance Gravel tubeA reliable, lightweight TPU gravel tube built for everyday adventure mileage. Made in Germany with a patented all aluminum valve and a patented end to end welding process. Why it works 5153 g, depending on valve length. Roughly 70% less than a standard butyl gravel tube a difference you feel in acceleration on rolling terrain and in your bag when you're carrying a spare. Holds pressure on washboard and chunder. TPU doesn't creep at gravel pressures

A reliable, lightweight TPU gravel tube built for everyday adventure mileage. Made in Germany with a patented all-aluminum valve and a patented end-to-end welding process.

Why it works

51–53 g, depending on valve length. Roughly 70% less than a standard butyl gravel tube — a difference you feel in acceleration on rolling terrain and in your bag when you're carrying a spare.

Holds pressure on washboard and chunder. TPU doesn't creep at gravel pressures the way butyl does. Stable feel hour after hour, no gradual sag halfway through the ride.

Patented all-aluminum valve with removable core. If the valve core ever works loose or leaks — 60 seconds and a valve tool to fix. No new tube needed. Compatible with standard extensions.

End-to-end welded, not spliced. Eclipse's patented welding process eliminates the seam junction — historically the most common failure point in TPU tubes. Backed by tight in-house QC before anything ships.

Clik Valve compatible. Works with the Eclipse Clik Valve conversion kit (sold separately) for one-handed pump connections in the field.

Packs to nothing. Smaller than a butyl spare. Fits in a top tube bag, frame bag, or jersey pocket without taking up the space you'd rather use for snacks.

100% recyclable. When it finally wears out, it doesn't go to landfill.

Specs

Weight by valve length:

Which valve length do I need?

40 mm — most gravel and adventure rims with a shallow-to-mid rim bed.

50 mm (with thread + nut) — mid-depth rims; the threaded version locks against the rim so the valve doesn't get pushed inside under hard inflation.

70 mm — deeper aero gravel rims and any rim deeper than ~45 mm. If your rim depth is close to a boundary, go longer.

Best for

• Gravel riders who want a durable, lightweight tube for daily training and long days
• Bikepackers who care about every gram and every cubic centimeter in the bag
• Anyone switching from tubeless who wants the weight benefit without the maintenance
• Riders with deep-section gravel rims who need a longer valve

Installing a TPU tube — the short version

TPU installs differently from butyl. Four things matter:

Start with zero air. Insert the valve completely flat — no pre-inflation. This is the single most common installation mistake.

No tire levers on the second bead. Mount by hand. Levers pinch TPU in a way they don't pinch butyl.

Soft-inflate to 0.3 bar (5 psi) first. Before closing the second bead fully, give it a small amount of air to seat the tube without folds or twists.

Inflate in steps. Go up in 1 bar (14 psi) increments, not all at once. Before you hit full pressure, squeeze the sidewalls around the whole wheel to check the tube isn't peeking out anywhere.

That's it. Once it's seated, it behaves like any other tube.

What makes Eclipse different

Eclipse pioneered TPU inner tubes in 2011 — before the category existed commercially. The patented all-aluminum valve and patented end-to-end welding process aren't marketing language; they're engineering decisions made to solve real failure modes. Every tube is QC-checked before it ships.