Khrome Werks 4-1/2" HP-Plus Slip-On Mufflers with Race Tip Chrome 202915

If you're running a Twin Cam and settling for stock exhaust, you're leaving power on the table. The Khrome Werks HP-Plus slip-ons deliver measurable performance gains—12% more torque and 7% increased horsepower—backed by dyno testing, not marketing promises. You'll get the aggressive Khrome Werks signature sound without the high-pitched drone that fatigues on long rides, plus the flexibility to dial in your aesthetic with rotatable billet aluminum tips.

These are a bolt-on solution that doesn't require welding or professional fabrication. The absorptive baffle design uses stainless steel matting and high-temperature fiberglass to control resonance while maintaining that unmistakable tone. Optional performance inserts let you fine-tune low-end response and sound character to your preferences—whether you're chasing track time or cruising.

• 16-gauge steel construction
• Twin Cam specific fitment
• Bolt-on installation
• Dyno-tested: +12% torque, +7% HP
• Stainless steel baffle matting
• High-temp fiberglass insulation
• Rotatable billet aluminum tips
• Optional performance inserts included
• 4-1/2" slip-on design
• MPN: 202915