Bontrager Tire XR4 Comp Size:27.5 x 2.20 with a carbon composite sole

with a carbon composite sole for efficiency when you're pedaling and a SlipNot™ rubber outsole for traction when you're not

Optional Heart Rate with ANT+ HR transmitter sold separately

Electra doubles the fun by using reversible fabric with patterned and solid-printed sides

• VaporRize microdenier moisture transfer fabrics developed for UV protection

all with Armadillo maximum puncture protection from bead to bead

Bontrager Tire XR4 Comp Size:27.5 x 2.20 with a carbon composite soleLoose, rocky trails demand a tire with an aggressive tread for traction through the corners. The XR4 Comp is the cross country tire designed to keep you confident in the corners and quick through the rough stuff, even when wet weather muddies the trails. Key features Aggressive tread provides confident traction in demanding terrain Excels in loose and rocky conditions