Standard S.E cars with 12mm hex's now have options for foam tires with premium performance for drag racing enthusiasts. Designed by BBRC, these rear rims/foams are built to impress on S.E cars. With dimensions of 96mm O.D., 50mm width, they deliver precision and durability on the track. Foams can be shaved down from 96mm to 84mm to meet your rollout demands. BBRC uses a unique industrial bond between rim and foam allowing flexibility and extreme bond strength, Superior to standard foam/rim C.A style bonds. Upgrade your racing setup with these reliable foams today. SOLD AS PAIRS Shore 15-20 BBRC recommends only for Foam tire Preps / no prep. (Not rubber tire prep racing) also cleaning of rims and foams only use 50/50 simple green and water. Don't submerge rims / foams in water. Note, bare foams are available as replacement as needed ( SKU: 22183152 )