Guy Kesteven

Author: Guy Kesteven

Guy Kesteven has been testing bikes to their limits for 17 years. In the process of testing literally thousands of bikes and components, he’s marathon raced supermarket bikes, podium placed in Enduro downhills, frozen to the marrow on cyclocross sportives and mangled himself at the Mega Avalanche. Whether it's aggro trail bikes, aero time trial weapons or any bike in between, the experience and expertise of Guy and his northern UK test team lets him put every pedal stroke and bar twitch totally in context with a bike’s competitors, its development history and a cerebellum crushing amount of hard earned long term data.

Most Recent
Eyecatching cranks from Crank Brothers

Crank Brothers Cobalt Crankset
£225 4

Two years ago this ISIS-based XC crankset stunned everyone with its unique construction, although getting it ready for mass production was difficult. However, most cranks have now moved to integrated-axle


Continental Cross-Country 1.5in
£25.95 4

The alternate diagonal paddle tread is low enough to clean fast and, combined with smaller shoulder studs, it finds some bite in most mucky conditions. Its real party piece is how deep the ultra narrow 1.5in carcass cuts to find hard contact

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