Product Info The 2.0 Seat improves on the original Shotgun Seat with the addition of a quick release mount, 2 adjustable leg lengths, and more rubber protection. Designed for children 2 – 5 years (up to 48lb / 22kg) Quick release for super fast install, removal and swap between bikes Adjustable width and angle to fit all mountain bikes (not including e-bikes) Shotgun 2.0 Bars are 250mm in length, with Pro 19mm rubber grips designed for little hands Bars come with inserts to fit 25.4mm, 31.8mm and 35mm handlebar diameters Fits all bikes with standard 1-1/8 steerers (10mm clearance required)