Josh Hill put Sirris suspension on his Surron Ultra Bee and it's a game changer.
Josh Hill Sirris Ultra Bee Testing
TUNES TO RULE THEM ALL
Sirris offers a wide variety of tuning options to fit your riding needs.
The internal tuning is accomplished by mixing the perfect match of spring weight, compression settings, rebound settings, preload settings and oil weight. All are internally adjustable and serviceable by a trained technician or service center.
