Gates Polychain Final Drive Belts 1 1/2in. - 14mm 135 T PC-135-1 1/2 Precision ground Neoprene rubber backing, which rejects abrasive wear and allows less vibration Tooth profile does not allow air to be trapped between the belt and the pulley Provides for a quieter and smoother performance Made in the USA May be used for custom applications for shorter fit than stock.