A lightweight TPU road tube built for narrow race rubber. Made in Germany with a patented all-aluminum valve and a patented end-to-end welding process.
Waarom het werkt
From 27 g. Roughly 70% less than a butyl road tube. Less rotational weight where it matters most — pickups, attacks, and the last 200 m.
Holds pressure at race PSI. TPU doesn't creep at high pressure the way butyl does. Stable, consistent feel through long efforts — fewer top-ups, no slow sag.
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 for deep-section rims.
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.
Packs to nothing. Smaller than a butyl spare. Fits any jersey pocket or under-saddle bag without rearranging.
100% recyclable. When it finally wears out, it doesn't go to landfill.
Specificaties
|
|
| Size (ETRTO) |
622 × 18–25 mm |
| Materiaal |
TPU (thermoplastic polyurethane) |
| Valve |
Presta, all-aluminum, removable core. 50 mm available with thread + nut |
| Made in |
Germany |
| Recyclable |
100% |
Weight by valve length:
| Valve |
Gewicht |
| 50 mm |
27 g |
| 50 mm (with thread + nut) |
30 g |
| 70 mm |
30 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
- Road riders on narrow race rubber (20–25 mm)
- Time trial and triathlon setups where rolling efficiency comes first
- Anyone running deep-section wheels who wants the threaded 50 mm or a longer valve
- Riders who want the lightest training-grade tube — pair with the Ultra Road for race day
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.
