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FM-M4209-G410A Ford Racing Mustang 4.10 Ratio Ring & Pinion Gears Set
FM-M4209-G410A Ford Racing Mustang 4.10 Ratio Ring & Pinion Gears Set
$209.99
$179.99

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Download the new 2007 Brothers Performance Warehouse Mustang Parts catalog (in PDF format).

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Tech Notes: High Performance Lowering Springs


Many people ask, "What makes a progressive rate spring different from a specific rate version?". To understand this, you must first understand that all springs have a certain rate of (stiffness) to them. What makes a progressive different from the specific version is its unevenly spaced winding, which allows it to become stiffer as it is compressed during cornering. This allows the manufacturer to design it with a lighter rate at ride height. Then as the cars weight is shifted from side to side while cornering, the spring is compressed, therefore becoming stiffer. While this is better for overall ride quality, it does give up a performance edge to the specific rate version, which offers consistent ride stiffness for improved handling with less sponginess.

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Steeda 2005-2009 Mustang Adjustable Street Upper Control Arm
Steeda 2005-2009 Mustang Adjustable Street Upper Control Arm
$179.99




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It's Back! Bigger Stronger Faster - Boss 302 Engine & Engine Block
It's Back! - Bigger Stronger Faster - Boss 302 Engine & Engine Block

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Tune Up Guide and Specifications

NEW! Tune Up Guide and Specifications