We've broken the mould with our kids bikes. By putting 26 wheels on a kids MTB we've given a boost in performance similar to an adult switching to a 650b/27.5 Trail Hardtail. More confidence, more control and easier riding.With SRAM NX 1 by 11 spec and a trigger shifter the 405 really is a scaled down version of our award winning 900 series bikes. We have specced a XSYNC Direct Mount chainring so multiple chainrings are available to tune this bike to the size of the rider.The 405 also comes with Whyte's own Get-a-Grip seat post clamping system. This easy to use clamp allows the post to be raised or lowered on the trail, even with small cold hands.SRAM NX 1 by 11 drivetrain with NX Trigger shifter/ SR Suntour Epicon fork with adjustable air spring to tune to rider weight / Tailored front and rear tyres to exploit every ounce of grip and performance