An ultralight TPU gravel tube built for race day and weight-obsessed bikepacking setups. Made in Germany with a patented all-aluminum valve and a patented end-to-end welding process.
Waarom het werkt
46–48 g, depending on valve length. Lighter than the Performance gravel tube and a small fraction of a butyl tube's weight. The saving is rotational, so the gain in acceleration and handling is bigger than the gram count suggests.
Thinner wall, same engineering. Ultra uses a lower-gauge TPU film than the Performance line — built for riders who optimize for weight first. Best paired with clean rim tape and tires that aren't shredded.
Holds pressure like it means it. TPU doesn't creep at gravel pressures the way butyl does. Consistent feel for hours, no gradual sag mid-event.
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.
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.
Packs to nothing. The smallest gravel spare we make. Fits anywhere.
100% recyclable. When it finally wears out, it doesn't go to landfill.
Specificaties
|
|
| Size (ETRTO) |
622 × 30–45 mm |
| Materiaal |
TPU (thermoplastic polyurethane), Ultra-light gauge |
| Valve |
Presta, all-aluminum, removable core |
| Made in |
Germany |
| Recyclable |
100% |
Weight by valve length:
| Valve |
Gewicht |
| 40 mm |
46 g |
| 70 mm |
48 g |
Which valve length do I need?
40 mm — gravel and adventure rims with a shallow-to-mid rim bed up to 25mm height.
70 mm — deeper/aero gravel rims and any rim deeper than ~25 mm. If your rim depth is close to a boundary, go longer.
Beste keuze voor
- Gravel race day and time trial — when every gram counts
- Weight-focused bikepacking spares
- Riders with clean rim tape, well-maintained tires, and a gram-conscious build
- Pair with the Performance Gravel tube as a daily driver
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.
