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Old 06-23-2011, 04:00 PM   #6
alumniu
Registered User
 
Join Date: Mar 2007
Location: Rockford, IL
Posts: 37
My Ride: 2002 BMW 330i
Bushings come in pre-determined durometers (measured hardness) from Powerflex to work best in each particular location. Durometers ranging from 70A(Yellow), 80A(Purple), and 95A(Black). 70A is slightly harder than rubber and works great for drivers looking for a slight increase in chassis response. 70A is not suggested in certain location due to its lack of rigidity. 80A is noticeably harder than rubber and makes a great performance street material that retails low levels of NVH (noise, vibration, harshness). 95A is the hardest, and can be used in certain locations with minimal NVH. For most locations, 95A is used for aggressive/track use. - aakmotorsports
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