Check it out, Profile has dropped some images of the new Spline Drive Sprockets, which are available in 25t and 28t, plus you can purchase now. Sooner than later, you can expect the sprockets to run in higher tooth count for fixed gear riding. Colors available are blue, red and black. Via John Prolly.

The Profile Splined 144bcd will let you run Profile Cranks on a fixed gear bike, but without the sprocket bolt falling out, or eventually loosening. Made of 6061 aluminum, with CrMo hardened spline interface. Available now at Ben’s Cycle for $79.99.