The lightest road tube Eclipse makes — 19.5 g for a full TPU inner tube with an all-aluminum valve. Built for race day and rim-brake/disc race wheels in 20–25 mm tires. Made in Germany with a patented all-aluminum valve and a patented end-to-end welding process.
Waarom het werkt
19.5 g (40 mm valve). 21 g (70 mm). Lighter than most latex tubes. Roughly an 80%+ reduction vs a butyl road tube. The saving is rotational — you'll feel it the first time you stand up on a climb.
Thinner wall, same engineering. Ultra uses a lower-gauge TPU film than the Performance line. It's the race-day option, paired with clean rim tape and tires that aren't on their last legs.
Holds pressure at high PSI. TPU doesn't creep the way butyl does. Stable, consistent feel through long efforts.
Patented all-aluminum valve with removable core. If the core ever works loose, swap it in 60 seconds with a valve tool. 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.
Packs to almost nothing. The smallest road spare we make. Fits in a saddle bag corner.
100% recyclable. When it finally wears out, it doesn't go to landfill.
Specificaties
|
|
| Size (ETRTO) |
622 × 20–25 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 |
19.5 g |
| 60 mm |
20.5 g |
| 70 mm |
21 g |
Which valve length do I need?
40–50 mm — standard rims with a shallow rim bed (under 30 mm deep). Most training wheels and entry-level carbon rims.
60 mm — mid-depth rims, typically 30–45 mm.
70–80 mm — deep-section and aero wheels, typically 45 mm and above. If your rim depth is close to a boundary, go longer — you can always use less, you can't add what isn't there.
Beste keuze voor
- Race day, hill climbs, time trials, and any event where every gram counts
- Riders who want sub-20 g without going to latex
- Pair with the Performance Road Classic as a daily driver and reserve Ultra for race wheels
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.
