TREK CIRCUIT WAVECEL ROAD HELMET CRYSTAL WHITE Size:L The floor and lower walls

The floor and lower walls can easily be detached for cleaning

cobble stone roads and combinations of all of these at the same time

1 x Shimano SM-BB80 BSA 83mm Bottom Bracket

99mm axle diameter)

TREK CIRCUIT WAVECEL ROAD HELMET CRYSTAL WHITE Size:L The floor and lower wallsIf you get just one helmet, make it this one. Whether your finish line is on the race course or your front door, Trek Circuit WaveCel delivers the performance, comfort and tech to be your go to helmet. It's equipped with features that any rider will appreciate, like WaveCel technology, a BOA Fit System and Blendr mount systems. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Trek exclusive technology disrupts the