MORE INFORMATION - Tire Charts

Racing

Compound Definitions

125cc Class

COMPOUND CHART / COLOR CODE
YDC [ultra soft] YCX [soft] YCY [medium] YCZ [hard]
FRONT
REAR

  • Available in a variety of compounds.
Tire Size Compound Type Overall Diameter Overall Width Rim Sizes
125/600R17 YDC
YCX
YCY
23.6 4.5 [3.75]3.50-3.75
165/625R17 YDC
YCX
YCY
YCZ
24.8 6.3 [5.50]5.00-5.50
165/630R17 YDC
YCX
YCY
24.8 6.5 [5.50]5.00-5.50
155/635R18 YCX 25.0 6.0 [4.50]4.00-4.75


250cc Class



COMPOUND CHART / COLOR CODE
YDC [ultra soft] YCX [soft] YCY [medium] YCZ [hard]
FRONT
REAR

  • Excellent performance in a variety of compounds.
  • Used by many AMA & club race teams
Tire Size Compound Type Overall Diameter Overall Width Rim Sizes
125/600R17 YDC
YCX
YCY
23.6 4.5 [3.75]3.50-3.75
165/625R17 YDC
YCX
YCY
YCZ
24.8 6.3 [5.50]5.00-5.50
165/630R17 YDC
YCX
YCY
24.8 6.5 [5.50]5.00-5.50
155/635R18 YCX 25.0 6.0 [4.50]4.00-4.75