By City The Rock helmet carbon black - Size S 3958 Valve seals utilize Viton rubber

Valve seals utilize Viton rubber and outer springs for a perfect seal

Note: See 562726 for rebuild kit

KUSTOM TECH SPROCKET BRAKE KIT CHOPPER STYLE

The use of two O-rings eliminates leaking

By City The Rock helmet carbon black - Size S 3958 Valve seals utilize Viton rubberThe By City Carbon Rock helmet incorporates the latest technological advances and developments to make its characteristics to be very light and ventilated. It has been designed for those who are looking for a classic aesthetic. With a very compact and refined design, with leather interiors and finishes, it has an easy to use double ring fastening system for a perfect fit. Removable and washable inner padding. The helmet is ECE UN R. 22. 06 approved.