With a record number of overall World Cup wins and the only perfect season in MTB history to her name, Rachel Atherton is the queen of downhill racing. Do you need help replacing a worn drivechain?

We asked the experts the fundamental questions on chain and cassette maintenance to help you navigate both the costs and work you can expect for a smooth running, reliable bike.

Last time we looked at how to effectively clean and lubricate your chain to extend its life. No matter how well you look after it though - it will eventually wear out and need replacing. If you don't ...