FSA Gossamer Pro AGX+ 386EVO 1x Crankset Alloy Muscle for the Dirt Roads Gravel and adventure riders who want a stiff, reliable 1x drivetrain without stepping up to carbon have a strong option here. The Gossamer Pro AGX+ is cold-forged alloy done right: heavily scalloped arms strip away material where it isn't needed, and the result is a crank that punches above its weight class on long days in the dirt. The BB386EVO 30mm spindle gives you broad frame compatibility, so fitting this crank to your setup is straightforward whether you're running a BB386EVO shell or adapting to a more common standard. Single-ring tooth options cover the range gravel riders actually use, from techy climbs to fast open roads. Features Cold-forged AL6061 arms with heavy scalloping removes material in the right places for a strong strength-to-weight ratio without sacrificing stiffness BB386EVO 30mm CNC alloy spindle fits a wide range of frame BB standards via appropriate adapter cups, keeping this crank compatible across most modern builds1x-specific 120mm BCD with 40T, 42T, and 44T chainring options covers the gearing range gravel and adventure riders need on varied terrain50mm chainline optimized for 1x drivetrains to keep chain wrap consistent across a wide cassette Chromoly chainring bolts tougher than standard alloy bolts and resist backing out on rough roads Arm lengths: 165, 170, 172. 5, 175mm fits a wide range of riders and frame geometries | Fsa | Gossamer Pro Agx+ 386Evo 1X Crankset 42T, 175Mm, Bb386Evo 30Mm | Aluminum