Introducing the new VERSION2 MPx pulley for the 03-05 SRT4. This pulley, is a redesign of the famous MPx pulley that has been out for the 03-05 Dodge SRT4 since 2003.

This underdrive pulley creates more power over the stock pulley by reducing overall weight, and size of the crank pulley. This allows your car to rev faster, and overall be much more peppy.

We provide installation instructions, as well as new belts for your power steering/ac, and alternator, so its a complete installation package! You need nothing else to install this other than your tools! (PS/AC belt 5040525, Alt 5040315)

We took the same measurements of our MPx pulley, machined out some material where we could to make it lighter, and then inserted a stainless steel center hub sleeve for maximum strength. The reason we switched to a stainless steel center hub was to improve the overall strength of the pulley, and to make it easier to remove.

Even though stainless steel weighs nearly 4 times the weight of aluminum for the same size, because of weight reduction and improvement in design of the pulley, we were able to increase the overall weight of the pulley by only .05 lbs, or 1/20th of a pound compared to the older design!

Take a look at the top and bottom comparison photos that show the newer version pulley on the left, and the older version pulley on the right. Notice the material that was trimmed away to save weight.