Features the Charger 3.1 RC2 damper that offers a wider tunable range of adjustments for the perfect suspension action Built around the ultra versatile, highly capable and lightweight 35mm chassis Equipped with ButterCups that dampen highfrequency vibrations before they hit the rider's hands DebonAir+ air spring is built to strike the perfect balance between butterlike small bump feel with increased air volume for rider support throughout the travel 180mm minimum/220mm maximum rotor size, 81mm maximum tire width EBike approved