This is a Brand New WMW 19% Supercharger pulley with the correct shorter belt to install on your Supercharged MINI Cooper S. This will increase your HP by as much as 20hp and by far is the best bang for the buck mod for your MINI.
The WMW pulley has a few advantages over others on the market.
1. it is all stainless steel so no rusting or corroding
2 The 2 piece design makes install easy and keeps proper alignment without having to press it on
3 WMW pulley has larger lips on the front and back similar to the original pulley design to aid in holding the belt during install and keep it fully engaged
4 has extra holes in it to reduce weight
5 center hole larger to verify install as you can see the supercharger shaft mate to the face of pulley
The 19% pulley will gain you a little more low end than a 17%, thus good for street and Auto Cross use, but we don't recommend it for track use or any use that will stay at high RPM for long periods of time.
The 19% designation indicates this pulley is 19% smaller than the original stock pulley.
Installing this pulley will NOT cause a check engine light or any other failures as this is by far the most common mod any MINI owners do. WMW has personally installed over 600 of them without failure.
This will fit ALL Supercharged MINI Coopers, does not fit any other models.
Keep in mind you will need to have the proper tool to press the original pulley off or a professional shop do it for you. We do offer this tool in our other auctions.
Way Motor Works is a MINI ONLY performance shop that has been servicing and selling MINI parts for 20 years so you can be sure that you are getting a quality part that is tried and true.
For off road and racing use ONLY in CA. Please check your local laws for compliance before purchasing.
We ship daily so this will ship ASAP after payment is made.