Team GB's secret smaller-pitch chains break cover ahead of Olympic track cycling events

Scaled-down drivetrain designed to reduce aerodynamic drag and increase stiffness - and hasn't yet been spotted by Team GB's rivals

British Cycling 10mm pitch chainring
(Image credit: SW Pix)

British Cycling is to use chains, chainrings and sprockets with a smaller distance between teeth - or pitch - in order to reduce the size of the front chainring and gain aero, weight and rigidity advantages, Cycling Weekly has learnt.

A second source puts the choice down to efficiency gains, due to extra teeth spreading the load and allowing for better chain articulation, as opposed any real aerodynamic gains.

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Michelle Arthurs-Brennan

Michelle Arthurs-Brennan the Editor of Cycling Weekly website. An NCTJ qualified traditional journalist by trade, Michelle began her career working for local newspapers. She's worked within the cycling industry since 2012, and joined the Cycling Weekly team in 2017, having previously been Editor at Total Women's Cycling. Prior to welcoming her daughter in 2022, Michelle raced on the road, track, and in time trials, and still rides as much as she can - albeit a fair proportion indoors, for now.