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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
For single ring chainset use
The Ratchet System is extremely reliable due to the simultaneous engagement of the ratchet faces
PERFORMANCE RATING: Waterproof rating (mm/H20): 20000
000mm) and breathability (5000gm)
Highly cost effective
Trek Rally WaveCel Mountain Bike Helmet Size:Small For single ring chainset useTrek Rally WaveCel Mountain Bike Helmet A major advancement in the protection against cycling related head injuries Rally WaveCel is a high style, high value off road helmet with trail specific features and WaveCel, a leading technology in the protection against cycling related head injuries. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Trek exclusive technology disrupts the safety standards that the industry
