Eclipse GT Gravel Tube — 622/584 × 30/45 mm offroad Wider tubes have more material

Wider tubes have more material to distribute evenly — starting flat prevents bunching

CNC aluminium body

the Eclipse Performance Brompton tube is one of the lightest inner tubes made for any wheel size — designed specifically for the 16 × 1⅜" (ETRTO 349) tyre standard that Brompton uses across its entire range

Consistent pressure means consistent handling — lap after lap

Roughly 70% less than a standard butyl gravel tube — a difference you feel in acceleration on rolling terrain and in your bag when you're carrying a spare

Eclipse GT Gravel Tube — 622/584 × 30/45 mm offroad Wider tubes have more materialA gravel tube built for long days on rough roads with a thicker TPU wall than the Performance line for extra puncture protection where it matters most. Made in Germany with a patented all aluminum valve and a patented end to end welding process. Why it works Thicker wall for rough surface confidence. The GT uses a heavier gauge TPU than the Performance gravel tube. Sharper stones, broken tarmac, and unpredictable terrain the GT is built for the kind