Belt Drive Center Track.

"Rocker Ti SS wins Half Growler SS Division

Hank Pool of 303 Racing whisked his Rocker Ti SS across the finish line at the Half Growler, placing first in the SS division and 6th overall. And yes, he was on CenterTrack!"

 MTB, MTB, MTB.

http://spotbrand.com/rocker-ti-ss-wins-half-growler-ss-division/