SMITH Mainline MIPS Full Face Helmet wahoopromo 5 1/8" long measuring clamp

5 1/8" long measuring clamp to clamp (127 mm)

giving you cleaner shifting performance and longer component life

ELITE Transfer fabric with UPF 50+ sun protection and Ice-fil®

it's packed with handy features

Designed for riding on rough roads

SMITH Mainline MIPS Full Face Helmet wahoopromo 5 1/8" long measuring clampGive credit where credit's due. Thank your mom, your legs, and your gear for giving you the opportunity to land that rocky gap. Made for going big, going fast, or both, the Smith Mainline is our pinnacle, downhill certified enduro bike helmet. Safety innovations like Koroyd and MIPS provide energy absorbing impact protection so you have the confidence to get aggressive on the trail. It doesn't matter if you're slaying the EWS in Whistler or suffering