CZP by Unorthodox Racing Stock Sized pulleys are now available for the Infiniti Q50/Q60 VR30DDTT. The main purpose of the stock sized pulley is to lose as much weight off the crank pulley, and turn that extra lost weight into HP Gains.

The factory crank pulley has a sizable static weight of 4 lbs. with most of that weight being in the outer 2 inches of the roughly 6 inch diameter. This effectively makes the rotational weigh significantly higher on the order of 50% or more.

The UR pulley is part# CS10191 and weighs in at a svelte 0.7 lbs. This makes our pulley 3.3 lbs lighter than the stock pulley. More importantly because we eliminate most of the outer weight unlike the stock crank pulley our pulley has a rotational weight of almost 0, that's zero lbs.

All the late model Nissan crank pulleys have front engine oil seal that rides the back of the pulley and as always we manufacture and press on a 316 stainless steel sleeve for wear and corrosion resistance.

Weight

Stock: 4lbs
Unorthodox Racing: 0.7lbs