GT450 8 Rib Conversion Kit

Starting at


Free Shipping

Convert To A 8 Rib Belt System For HighBlower Speed/Big Blower Applications.

Convert To A 8 Rib Belt System For HighBlower Speed/Big Blower Applications

The 2005-2010 Mustang GT 4.6L 3v comes standard with a 6 rib belt system. You can convert to a 8 rib belt system to deal with high blower speeds and/or large blowers.

 We suggest doing this when you get to the 575-600rwhp range.

 Converting to a 8 rib system get’s you 33% more belt contact. It doesn’t seem like 2 additional ribs will do much, but they do. A 33% increase in anything performance related is a very large increase!

 This kit comes with extra/different size idler pulleys so you can dial your tensioner preload in perfectly without having to take a lot of trips to the store.

-8 Rib supercharger pulley

-76mm idler pulleys x5 (extras for dialing in tensioner preload)

-90mm idler pulleys x3 (extras for dialing in tensioner preload)

-Air Conditioning pulley

-Power Steering Pulley

-Harmonic balancer/crank pulley (OEM type)

-Clutched alternator pulley

-Gates Fleetrunner HD Green belt

You will need special tools to swap the power steering pulley and harmonic balancer. These can be purchased or rented at most auto parts stores.

Choose your options Below

Price Based On Your Selected Options

(Price shown represents a 3.5% discount for cash, check, bank/wire transfer)


Updated Price Based On Your Options


2005-2010 Mustang GT2005-2010 GT Supercharger Belt Systems8 Rib Conversion KitsGT450 8 Rib Conversion Kit