This is a BLUE Gates Racing performance timing belt.
Constructed of HNBR elastomeric composites, Gates Racing Performance Timing Belts are 300% stronger than stock belts and deliver up to three times the heat resistance. You can count on them to hold up to the rigors of high horsepower, even with interference engines.
Available part numbers:
T224RB (92-00 Civic / Del Sol 1.6L SOHC)
T226RB (H22a, H22a1, H22a4)
T328RB (02-08+ WRX/05-08 Legacy GT)