Years of experience have taught the engineers at ACUITY that there are many elements to a refined, responsive shift. Compliance from flimsy components in the shift linkage leave the driver feeling detached from the transmission. ACUITY combats this by replacing the OEM rubber bushings with much stiffer Acetal and 6061-T6 Aluminum. A large-diameter, custom spherical bearing minimizes long-term wear and tear while eliminating the binding that is caused by most aftermarket solid shifter cable bushings. Loose fitting components also contribute to a poor shifting feel. That's why ACUITY uses integral o-rings on the outside of each bushing to provide a perfect fit with your OEM cables. Tested on street cars, track cars, and ACUITY's unreasonably violent shifter testing machine, these bushings are designed to be robust and proven to last. Each bushing kit is laser etched with a unique serial number and includes stainless steel hardware to help prevent long-term corrosion, keeping your bushings looking great even longer. And if all of that isn't impressive enough, the bushings are over 20% lighter than their OEM counterparts, weighing in at only 48 grams (with hardware).