Topeak Mountain DA Dual Action Pump YGroup_7034355253293 These are tough wheels that

These are tough wheels that look and sound amazing

It's a long lasting compound that is able to withstand high temperatures from consistent heavy braking

SPIN (Shearing Pad INside) uses a silicon gel-like membrane inside the pad that allows the helmet to rotate a small amount independently of the head to reduce the rotational forces on the brain caused by oblique impacts

The Ardent also offers oversized and stepped side knobs for multiple gripping edges when cornering

Compatibility (rear derailleur):

Topeak Mountain DA Dual Action Pump YGroup_7034355253293 These are tough wheels thatOversized aluminum barrel fills large volume MTB, fat bike tires with ease while Dual Action (DA) doubles volume with each stroke and inflates tires up to pressure fast. Integrated dust cap keeps pump head clean and thumb lock lever insures air tight seal. HEAD Presta Schrader Dunlop with integrated dust cap BARREL Aluminum THUMB LOCK HANDLE Plastic CAPACITY 60 psi 4 bar VOLUME PER STROKE 81. 4 cc (pull + push) ADDED FEATURES Dual action pumping head.