S&S CYCLE 4-1/2" GNX Slip-On Mufflers - Guardian Black 550-1078

If you're running stock or lightly modified head pipes and want a distinctive, aggressive exhaust note without a full system overhaul, the S&S Cycle GNX slip-ons deliver genuine tone character with SAE J2825 compliance. The louvered baffle design creates that purposeful growl riders expect from S&S racing heritage, while the removable dB reducer gives you flexibility between track and street environments. These are a straightforward bolt-on solution that transforms your bike's presence without breaking your build timeline.

• 4-1/2" outer diameter mufflers
• Louvered baffle design
• Aggressive tone character
• Guardian Black finish
• Racing-styled end caps
• SAE J2825 compliant
• Removable dB reducer included
• Slip-on bolt-on fitment
• U.S.A. manufactured
• MPN: 550-1078