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2015 Subaru WRX Pulley

We all know that less rotational mass is always better.  The rotational weight has a factor of 3 compared to static weight.  So when you save 3lbs on a rotational weight item, it is really like saving 9lbs. Changing out the pulley system will give your Subaru WRX much quicker throttle response as there is less engine load.  In the case of these Tomioka Racing light weight water pump pulley, it shaves off 56% from the original pulley.  This makes the engine easier to move with less mass.  For reference, the factory pulley weighs in at 320 grams where the new Tomioka pulley weighs only 140grams.  The pulley is made from CNC machined aluminum that has then been anodized in gold and is a 100% bolt on.  This is a very highly recommended product for the 2015 Subaru WRX.

 TR-TM2051

Tomioka Racing Lightweight Water Pump Pulley Subaru WRX 2015+

$110.00

Check out more 2015 Subaru WRX Performance Parts Here