Hasport engine mount bushings are available in four different urethane hardness levels: 62A, 70A, 88A, and 6061 solid aluminum.

• 62A polyurethane is suitable for a streetcar and offers a ride quality closer to stock, as it will transfer less engine vibration to the chassis for a more comfortable ride.
• 70A polyurethane is for the customer that seeks to occasionally drive their build on the track.
• 88A is the stiffest polyurethane bushing that Hasport offers and is designed with dedicated track use in mind.
• Engine mounts can also be purchased with solid 6060 aluminum for those seeking to build the extreme track dedicated car.

Keep in mind the stiffer the bushing the more vibration will be transferred into the chassis. Higher durometers bushings are not recommended for street cars as it will put more strain on all other components on the car.