Flat Tire Defender's Elite foam insert is designed for Downhill and Enduro. Created to work along side tyre sealant, the FTD insert adds greater rim protection, sidewall support and feels like a 3rd suspension system, allowing you to attack rock gardens and root sections, without worrying every strike could be the last for your wheel. The Elite provides more rim protection and dampening on rough terrain, over its ET sibling, along with increased sidwall support. Designed for inner rim widths of 30mm to 36mm, used with a tyre ranging from 29 x 2.3 to 2.5 inchesFlat Tire Defender ❞ELITE❞ Foam Inserts features & benefits:Rear specific provides additional 40 percent sidewall coverage to protect pinch flats & minimize sidewall rollRear specific provides additional 40 percent rim edge protection and minimizes rim pingRear specific provides additional 30 percent impact absorption and reduction of wheel vibration on rocks & rootsFront specific minimizes gyroscopic effect when jumpingFront specific minimizes handlebar vibration on rocks & rootsFront & rear allows lower tire pressureFront & rear enhances suspension characteristicsFront & rear minimizes tire burping