Helmet strap, helmet itself (the peak), jersey, shorts, kneepads, even the shoelaces (if applicable) the forks shape, knobbly tyres, low rims, brake calipers, etc. And of course riding position. I picked off quite a few people furiously pedalling in both Megavalanches I did just tucking and chilling on flat-ish straight gravel roads. Tuck is king.