Reduces the need to carry CO2 canisters or spend loads of time pumping. Quick and efficient tyre inflation, but struggles to seat tyres and is not waterproof.

The Stromm Raktt might be the fastest bike on the market, it saves you 10 watts at 40kph and—hold onto your aero socks—30 ...

Everything we found out about tyre widths, self-inflating systems, and wheel choices from the cobbled Monument ...