4" HP40 slip-on muffler for select 2025 HD Softails; free-flowing 4" design improves performance and produces a deep, throaty rumble.
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3.5 in HP35 Slip-On for HD: DBX-style catalyst baffle for increased horsepower and torque. Easy install, tuning recommended. OEM gaskets required (not included). No O2 sensor holes.
Specifically designed to fit all track pitches: 2.52", 2.86", 3", 3.5". Works with snowmobiles and snowbikes up to 3.25" lug depth. Over-sized 5" caster wheels for easy movement. Tapered sides for straightforward track installation.
Direct replacement twist-grip sensor with pre-installed MIL‑SPEC terminals and hardwired harness connection.
Top-quality OEM-style replacement connector and terminals. Easy to use, made in the USA.
Complete extension wiring kit with pre-crimped Molex terminals, heat shrink, and color-matching wire to extend OEM H-D handlebar switch wiring. Made in the U.S.A.
4.5" slip-on mufflers tuned for HD touring bikes. Works with stock head pipes; DBX Performance baffle for improved sound and power. Made in USA with a Forever Warranty.
- High-performance radial piston design with straight flow for fast response
- Anti-block and anti-fading systems for reliable damping
- 50/30-click rebound and compression adjusters
- Progressive spring with threaded preload; adjustable for solo or two-up riding