S&M Challenger Frame KitOriginally released in 1993, the Challenger frame and fork kit was conceived in a golden era of BMX when racing and trail riding could be done on the same bike. It quickly became one of the best selling frames ever and now, 30 years later, it's back! For this very limited edition reproduction kit, S&M have gone with a 21 top tube, upgraded to a CNC machined head tube and laser cut drops. A 1 threaded headset and 1 seatpost clamp are included with each