Underdrive pulley's are definitely a really cool mod. They will lighten up the rotating mass on your engine, leading to some awesome power and acceleration gains! These SR performance pulleys are made from lightweight aluminum for durability and performance. Made using precise, state-of-the-art CNC manufacturing, you can count on these pulleys to perform at the highest level.Mustang SFI Approved Underdrive Pulley Kit (05-10 GT) at AmericanMuscle - Free Shipping!
About to order these and likely install them Next Weekend, has anyone else had any experience with them? The installation guide seems pretty straight forward and it shouldn't be that big of a deal with an array of tools at my disposal. (Begins installation with confidence...3 Hours later...... :banghead
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