and Super Boost when fitted with the correct chainline spacers (included)

Improved bearing ratio for metric sizes

Prevents chafing

5": Front: 278mm

Fox Speedframe Helmet - M - 5050 - Cream eBay and Super Boost when fittedThe Speedframe Helmet features the iconic styling of Fox, plus Mips to keep you protected on the trail, optimised venting to keep you cool, and the 360 Fit System for a perfectly dialled fit. Add in the legendary aggressive Fox design DNA, and you have one of the most shred ready MTB helmets on the trail today. Features Mips added protection system has been proven to reduce rotational motion when implemented in a helmet by absorbing and redirecting