An ultralight TPU endurance tube — 27 g for a full inner tube that fits the same 23–35 mm tires as a daily training setup. Made in Germany with a patented all-aluminum valve and a patented end-to-end welding process.
Waarom het werkt
27 g (50 mm). 29 g (70 mm). Roughly 80% lighter than a butyl endurance tube and noticeably lighter than the standard Performance Endurance. Race-day weight in a wider tire size range.
Thinner wall, same engineering. Ultra uses a lower-gauge TPU film than the Performance line. Best paired with clean rim tape and well-maintained tires.
Holds pressure on long days. TPU doesn't creep the way butyl does. Stable feel for hours, no gradual sag mid-ride.
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.
Packs to nothing. Smaller than a butyl spare. Fits anywhere.
100% recyclable. When it finally wears out, it doesn't go to landfill.
Specificaties
|
|
| Size (ETRTO) |
622 × 23–35 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 |
| 50 mm |
27 g |
| 70 mm |
29 g |
Which valve length do I need?
50 mm — standard rims with a shallow to medium rim bed (up to 40 mm deep). Most training wheels and entry-level carbon rims.
70 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 endurance setups in 23–35 mm tires
- Sportive, long-day events, and hill climbs where every gram counts
- Riders who want race weight in a tire size they actually train on
- Pair with the Performance Endurance as a daily driver — Ultra 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.
