This idler is a stock size replacement for the steel GT500 Thump Tensioner pulley. Our pulleys are hard black anodized to ensure a durable and long lasting finish. They also come preinstalled with premium bearings.

*DOES NOT INCLUDE TENSIONER*

Weight comparisons:

Thump: 478g (1.05lb)

Billet Pro Shop: 220g (0.5 lb)