The tube for riders who measure their days in hours, not kilometres. Made in Germany with a thicker TPU wall than the Performance line, a patented all-aluminum valve, and a patented end-to-end welding process — engineered for long-distance reliability.
Por qué funciona
Thicker wall, built for distance. The GT uses a heavier-gauge TPU than the Performance road tube. The result is meaningfully better puncture and cut resistance — the kind of margin that matters when you're 100 km from home and a flat would end the day.
46–49 g, depending on valve length. That's roughly half the weight of a comparable butyl tube — still a significant saving in rotational weight and pocket bulk, with durability closer to what you'd expect from a much heavier tube.
Holds pressure like it means it. TPU doesn't creep at high PSI the way butyl does. You get a stable, consistent ride feel on long efforts — less frequent top-ups, no gradual sag mid-ride.
Patented all-aluminum valve with removable core. If the valve core ever works loose or leaks — it takes 60 seconds and a valve tool to fix. No new tube needed. The valve is also 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 before anything ships.
Packs to nothing. Smaller than a butyl spare. Fits any jersey pocket, under-saddle bag, or bento box without rearranging everything else.
100% recyclable. When it finally wears out, it doesn't go to landfill.
Especificaciones
| Size (ETRTO) |
622 × 23–35 mm |
| Material |
TPU (thermoplastic polyurethane) |
| Valve |
Presta, all-aluminum, removable core |
| Made in |
Germany |
| Recyclable |
100% |
Weight by valve length:
| Valve |
Peso |
| 50 mm |
46 g |
| 60 mm |
47 g |
| 70 mm |
48 g |
| 80 mm |
49 g |
Threaded valve + nut options available in 50 mm and 70 mm.
Which valve length do I need?
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.
Ideal para
- Long-distance road riders, sportive and gran fondo participants, and multi-day tourers
- Anyone who prioritises reliability over absolute weight savings
- Riders with deep-section wheels who need a longer valve — available up to 80 mm
- Winter and all-season riders who want extra puncture protection without going back to butyl
GT vs Performance — which one?
The Performance road tube (35–40 g) is optimised for minimum weight — ideal for racing, fast group rides, and anyone who counts grams. The GT (46–49 g) uses a thicker TPU wall for better puncture and cut resistance. Choose GT when the ride is long, the road surface is unpredictable, or you simply want the extra insurance. Both share the same patented valve and welding technology.
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.
