Fit Bike co Aitken S 4,
The latest installment of Mike Aitken's Signature BMX frame from Fit, the S4. The frame is of course hand made in the USA using heat treated, supertherm 4130 cr-mo and weighs in at well under 5lbs. The S4 builds on the S3.5 With the addition of a new dent resistant downtube, a completely re-designed head tube and mid BB as well as tapered and butted top tube, single bend stays and curved bridges for better rear tyre clearance and a new rounded seat stay cut for better peg fit.
