MOOSE RACING Muffler Sleeve Core - 15" 14289

If you're rebuilding or maintaining a performance muffler, packing material degradation is inevitable—but the repack intervals don't have to be. This MOOSE RACING muffler sleeve core replaces conventional fiber packing with a dual-layer stainless construction that extends service life by 3 to 5 times, keeping your exhaust sound and scavenging characteristics stable for longer between maintenance cycles. The two-layer wrap of 304 stainless wire cloth and high-temp stainless steel wool resists heat breakdown far better than traditional packing fiber, making it the smart choice for serious racers and frequent track users who can't afford inconsistent performance.

The 15" length fits cores ranging from 1.75" to 2.125" in diameter and trims easily with scissors for custom applications. Installation is straightforward with included stainless steel wire for securing the wrap, and the design pairs seamlessly with Moose Racing Packing Pillows for a complete muffler system.

• 304 stainless wire cloth
• High-temp stainless steel wool
• 15" length
• Fits 1.75"–2.125" cores
• Scissors-trimmable
• Extends repack intervals 3–5x
• Includes securing wire
• U.S.A. manufactured
• Bolt-on installation