
The block is robust & allows a smooth rotation of your front wheel. This is brilliant when you're putting in big efforts as the slight movement enables a more fluid training experience. The rotation also reduces the strain you're putting through the front wheel. Stable & Immersive Swivel Riser Block This experience-enhancing addition is 14cm at its highest point & has a wider & narrower moulded recess for both Road & MTB tyres. The inner channel measures 30mm at its widest & the outer recess will accommodate tyres up to 65mm. Plus, its swivel mechanism has enough friction to enable a fluid-controlled movement that is reassuring when on the bike.