When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
They are much firmer then stock, however have two studs infused in the material similar to stock so that the vibration is not transmitted to the frame. Basically you get the advantages of stiffer aftermarket bushings without the added vibration.