Out of stock notices on products and options are manually added and removed. These will not be updated while we are away, so may not be correct. Stock will still be allocated to your order if available, but we will notify you of any backorders upon our return.
We highly recommend ordering on our eBay Shop if you want to make sure you are ordering a stocked item. We update eBay stock automatically behind the scenes, so the stock shown is what we have available.
This is a kit to allow you to convert from the standard 6 rib pulley and belt setup, to a wider 8 rib pulley and belt setup.
When pushing the supercharger to its RPM limit, this applies a greater demand on the belt. Adding 2 more ribs to the existing pulleys, increases surface area by 1/3, giving you 1/3 more grip on the belt, extending the life of the belt and decreasing the chance of belt slip.