Swapping out to a smaller supercharger pulley is the easiest way to add power to your 2003-2004 Cobra short of a tune. However, the smaller you go, the less contact area the belt has on the pulley. This leads to the belt slipping.
Luckily BilletFlow devised the solution by way of this Snub Idler Pulley & Bracket. If the belt is slipping, then you are not achieving full boost. This snub idler will not add power itself, but the elimination of belt slip allows full boost which is where the power increase comes from. It utilizes a 100mm Idler Pulley & is a simple bolt on installation. It is black anodized for long lasting good looks.
Testimonial: Fast, free shipping... need i say more?
This whole year (2013) i've ordered numerous parts. from the front end (core support, head lights, radiator) to a all new rear end ( gears, axles, control arms) and everything in between. very pleased with Latemodel restoration's fast, free shipping and prices. never had any issues with orders i just point,click, and two days later its at my doorstep. you can bet when it warms up, and i get some seat time, ill be back for parts reviews. GREAT JOB LMR! keep up the good work.