B01S are resin compound pads and come with a split pin and spring

These are V2 models which have the following updates from the original design:

Chain Tool: 7–11 speed compatible

Anti-fungal and anti-bacterial

forged 7050 alloy stem body using a 4-bolt handlebar clamp and 2-bolt steerer clamp

Maxxis Highroller 2 Tyre - TR Kevlar Folding - EXO - 3C Maxx Terra - 2.3 Inch - 27.5 Inch Dropship B01S are resin compound padsBryn Atkinson's favourite tyre! The Maxxis Highroller 2 builds on the success of the original Highroller as the go to tyre for aggressive riding on technical loose terrain. Featuring slotted knobs and an open and aggressive tread design for enhanced traction on loose soils and excellent mud clearing ability. The centre and shoulder knobs have been modified to improve braking performance and traction on hard surfaces and the square profile provides a