P5 Ultegra Di2 mega15 1/2" x 11/128" chain is

1/2" x 11/128" chain is compatible with Shimano

The Grand Prix 5000 S Tubeless Ready allrounder tires are lighter

and boy have they delivered

all mountain and cross country riding

P5 Ultegra Di2 mega15 1/2" x 11/128" chain isP5 is a contre la montre catalyst. Its made for one thinghelping you go as fast as possible between Point A and Point B. We started with 30 years of aerodynamic expertise, littered with feedback from elite triathletes and Tour de France champions, added more than a few runs in the CFD metaverse, sprinkled in some 3D printed frames to verify what we were seeing in the computer, and out came a faster, more adjustable, and moregaspcomfortable race