TruVativ

HammerSchmidt All Mountain Crankset

The Truvativ HammerSchmidt All Mountain Crankset could revolutionize bicycle drivetrains from this point forward by eliminating that last bastion of low-tech: the front derailleur. Gone are the days of jammed or dropped chains, missed shifts, and bent cages. The move is in favor of a seamless and bulletproof system that magically squeezes two gears out of a single chainring. The best part is that it will shift in any condition -- load or no load -- any time you wish.

A system of planetary gears contained within HammerSchmidt's surprisingly compact and thoroughly sealed housing yields either a 1:1 or a 1.6:1 Overdrive gear ratio. Thus, a single 22T chainring delivers 22/36T versatility and a 24T ring provides the same range as a 24/38T. All along, the chain is held on tight by the included chain guide and you even gain more ground clearance, too. If you're envisioning downhill security with all-mountain versatility, you're on the right track.

Even better, this wizardry comes with only a modest weight penalty and virtually no increase in Q-factor. At 1623g, a complete HammerSchmidt All Mountain system adds less than 180g to a comparable setup using a Truvativ Stylo two-ring crank and chain guide. It offers more reliable, faster shifting, and it's tough as nails and way, way cooler.

The Truvativ HammerSchmidt All Mountain Crankset will only mount on frames with ISCG 03 or ISCG 05 tabs, and it requires the use of the matching HammerSchmidt bottom bracket and trigger shifter. Crankarms are available in both 170mm and 175mm lengths.