Demo Derby/Demolition Derby Tire Spine Run-Flat Insert

For common Demo Derby tire sizes. These podium proven, trail tested and military used inserts are your solution to flat tires taking you out of the event  Single insert pricing Lubrication for installation provided with new insert purchase  Inserts are size specific and should be purchased based on your desired tire size. If you don't see your insert size please contact us for availability  Tire Spines are a run flat insert that installs inside your existing off-road tires of choice with basic hand tools. Tire Spine's are made of a dense, yet extremely light-weight and durable foam.