I am using the Powerflex black bushing. I decided to use the black insert after reading Ghostewhite's assessment of both the yellow and black versions. I really am surprised at the lack of vibration considering the black insert is classed as their race version.
The COBB RMM looks excellent but the cost for me to import one verse buying a Powerflex bush from Aussie dealer is about $240 vs $65. Couldn't justify it, the 170 bucks I saved will be spent on something else (for the ST of course).
I also only replaced the large end bush where most of the movement occurs.
The COBB RMM looks excellent but the cost for me to import one verse buying a Powerflex bush from Aussie dealer is about $240 vs $65. Couldn't justify it, the 170 bucks I saved will be spent on something else (for the ST of course).
I also only replaced the large end bush where most of the movement occurs.