2008-2023 Dodge Challenger UltraMat Sound Deadening insulation Deadener Heat 12in x 12in Sheets Double Sided Roll, SRT8, SRT, SXT Plus, Hellcat Redeye Widebody Jailbreak, R/T, 392, GT, T/A, Hellcat, Redeye, Scat Pack Shaker, Rallye Redline, Classic, DualSound Deadening and ensuring proper insulation for a heat and vibration barrier is KEY! Debate Kilmat vs Dynamat, you wont find a more economical and efficient way to cover your 2008 2023 Dodge Challenger Ride Quiet & Cool with UltraMat! INCLUDES: UltraMat Heat & Sound Barrier 10 Sheets @ 11. 81in x 11. 81in (30cm x 30cm) UltraMat performance packs are designed to save you time and money by getting you the correct amount of UltraMat each and every