RockShox's SID Race is pretty much the fork if you're a serious cross country rider or racer. It's light, it's stiff and its Dual Air chambers and Motion Control damping are fully tunable for a custom feel and a dialed ride. Featuring an aluminum steerer, magnesium lowers and post mount disc brake bosses, the Race will never weigh you down. And for those long fire road climbs, sprints during races and riding from your house to the trail, you've got the bar-mounted PushLoc remote to lock your fork out. This is an OEM Fork purchase and the steerer tubes are pre-cut no shorter than 7.25 inches.