S-Works Phenom Size:155mm and a no-sacrifice 500% gear

and a no-sacrifice 500% gear range

Compatible with Roval Threaded Valve Stem

the most comfortable

The TSI-1 enables you to inject the perfect amount of sealant directly into mounted tubeless tires through the valve stem without removing the bead from the rim

Key Technologies: Bead Bite™

S-Works Phenom Size:155mm and a no-sacrifice 500% gearThe S Works Phenom is a top of the line, lightweight, all terrain saddle that features a FACT carbon fiber shell that's specifically tuned for the stiffness required of racing. And with a rounded, anti snag tail and the perfect amount of padding, you'll find it be more than ready for all day rides both on and off road. Patented Body Geometry design is lab tested to ensure blood flow to sensitive arteries. Super light, EVA padding for comfort and