The IRC Comp is a new competition model in the Siren series and was developed with an aramid bead with an emphasis on weight reduction. These two are the 20 x 1-1/8th & 1-3/8th versions suited for your youngest racers and won't break the bank when they chuck a few skids at the finish line.
Weights and Inflation:
- 20 x 1-1/8th - 178g (Inflation: 70psi)
- 20 x 1-3/8th - 259g (Inflation: 90psi)