BTwin Rockrider ST920

The Rockrider ST920 kids mountain bike is a great route into the world of mountain biking for junior riders, with a lightweight aluminium frame and suspension fork.

Its specification includes a Shimano Altus rear derailleur and thumb shifter for changing through the 9 speeds and comes fitted with an 11-36 cassette paired with a 36 tooth chainset. If I’m honest, this could be a few teeth smaller to make things a little easier when tackling really steep climbs.

We should also point out that the Rockrider ST920 features equipment such as an air suspension front fork and hydraulic disc brakes normally seen on much more expensive bikes.

 

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