Super lightweight crank pulleys
With the standard crank pulley weighing in at a hefty 1.7Kg+, it was obvious it could go on a bit of a diet.
These crank pulleys only weigh 440 g, a weight saving of almost 1.3Kg on the end of your crank!
The weight saving alone will give a more responsive feel to your engine, but it does not end there. As this pulley is smaller in size, it turns the alternator slightly slower, which causes the accessories to draw less energy from the engine, allowing you to get more onto the ground.
Another benefit of this size pulley, if you would like to remove air conditioning from your Z series engine. Removing air con not only reduces parasitic losses on the crank, it lightens the car at the front end and allows better airflow through your intercooler and radiator.