At virtually every mountain bike and suspension launch we attend, we’re told to simply sit on the bike while someone slides the “fun-o-meter” ring to the base of the fork or shock, then we hop off and see where it lies. If it’s in the ballpark, we gear up and head out, fiddling with the settings as we ride.
Recently, I had some time with Rockshox brand ambassador and SRAM MTB marketing manager Duncan Riffle, who also happens to be a 2x U.S. National Downhill Champ and former World Cup DH competitor, so we discussed the finer points of suspension set up. The result is this 6-part series, with additional input from Manitou’s Eric Porter, who’s raced professionally in XC/DH/DS/DJ over the past 11 years, and Mark Fitzsimmons, Fox Racing Shox’s race program manager and pro athlete suspension tuner. As you’ll see throughout the multi-part story, there’s quite an art to getting it all dialed, but when you do, it’s pure magic on the trail.
So, ready to rethink everything about how your suspension is set up? Good. We’ll start with sag, which is the amount of travel your suspension moves through just by adding your own weight (body, clothes, pack, etc.) to the bike. This puts the suspension into an active state, letting it react in both directions, keeping your tire glued to the dirt. To get it right, there are two things to consider: Rider position and amount of sag. We’ll start with properly positioning yourself on the bike so that sag is set based on your actual riding.
But first, make sure your fork and shock both have their compression damping set to their fully Open/Descend positions, then hop on the bike…