S&M Challenger 1993 Reproduction BMX Frame + Fork Set - Red - Made in USA 31.6mm "Studded Knobby" is the tread

"Studded Knobby" is the tread pattern

The crank arms are cold-forged from 6061-T6 aluminum for strength

They are made in the United States

smoother and rolls longer than most micro engagement hubs that rely on 6 pawls that are offset and cause unnecessary drag

S&M Challenger 1993 Reproduction BMX Frame + Fork Set - Red - Made in USA 31.6mm "Studded Knobby" is the treadThe Challenger frame and fork kit, first released in 1993, achieved success in the golden age of BMX, when a single machine could satisfy racers and trail riders alike. Now, 30 years later, this much loved frame kit returns! For this very, limited edition 2022 reproduction kit, S&M went with a 21 TT, upgraded to a CNC machined HT and laser cut drops and added fractional ratios to our gear chart. A 1 threaded headset, 1 seatpost clamp and S&M Padset