Retrospec sells $39 cranks. Are they too weak for a summer's use? Are they good enough for street and light trail use?

Three-piece Fixed-Gear, Single-Speed, or Fixie bike forged aluminum crankset

170mm Crank Arm Length without any overlap of crank arm & chainring bolts

All New Crank Arm Design is much stronger for faster and more aggressive riding

Fits on road, mountain, fixed geared fixies, BMX, track and single speed bikes

Standard Bolt Circle Diameter (BCD): 130

Takes 9/16" pedals