303 Firecrest Rear Wheel Cassette Body Type:Shimano HG 11/12-Speed Road and SLX 12-speed Hyperglide+ chain

and SLX 12-speed Hyperglide+ chain

Touchscreen compatibility is an additional feature for taking those epic mid-ride photos when the weather breaks

Aluminum crank arms and chainring

The new formula is just as fast as the original

Large 3 pocket storage design

303 Firecrest Rear Wheel Cassette Body Type:Shimano HG 11/12-Speed Road and SLX 12-speed Hyperglide+ chainThe 303 brings a lot to the table, including heritage proven in the worlds hardest races. At the center of the wheelset is Zipps 77 177 hubset, which results in improved stiffness, durability, simplicity and versatility. The carbon wheel that helped pioneer the Firecrest rim platform for improved aerodynamics and crosswind stability also features the unspoken durability that has repeatedly won Paris Roubaix and the Tour of Flanders Firecrest rim