Vance & Hines PCX 3″ Round Twin Slash Slip-On Mufflers For Harley Softail (2018–2024)
Emissions-Compliant PCX High-Flow Power for Milwaukee-Eight Softails
Upgrade the torque, style, and acoustic rumble of your Milwaukee-Eight cruiser with Vance & Hines PCX 3″ Round Twin Slash Slip-On Mufflers. Engineeered specifically for 2018 through 2024 Harley-Davidson Softail platforms, these slip-on mufflers combine the classic 45-degree angle twin slash cut look with Vance & Hines’ groundbreaking Power Chamber Exhaust (PCX™) technology.
Featuring an integrated high-flow catalyst core, PCX™ increases torque output across the entire powerband while maintaining full emissions compliance without sacrificing the signature deep V-Twin sound. Encased in full-coverage 220-degree heat shields, these 3-inch mufflers eliminate thermal bluing and keep your motorcycle looking showroom-ready for miles to come.
Technical Specifications & Product Details
| Feature / Metric | Product Specification | Rider Benefit |
|---|---|---|
| Brand / Manufacturer | Vance & Hines (Made in USA) | Proven V-Twin engineering with industry-leading exhaust fit and finish |
| Catalyst & Baffle Tech | PCX™ (Power Chamber Exhaust) Catalyst Core | Increases mid-range torque and acceleration while remaining 50-state emissions compliant |
| Muffler Body Diameter | 3.0-Inch Compact Profile Canister | Sleek, low-profile stance that complements slim Softail cruiser frame lines |
| Heat Shielding | Full-Coverage 220° Outer Heat Shields | Protects outer chrome or matte black finish against thermal discoloration and bluing |
| End Cap Style | Signature 45-Degree Twin Slash Cut End Tip | Classic custom V-Twin look that coordinates seamlessly with OEM Softail headers |
Performance Engineering & Acoustic Output
### High-Flow PCX™ Technology
Traditional catalytic converters restrict exhaust flow velocity, choking engine output and trapping heat near the rider. Vance & Hines’ proprietary PCX™ technology places a high-flow chambered catalyst within the muffler body, optimizing backpressure while accelerating exhaust pulse speed. This yields smooth horsepower delivery and a noticeable bump in off-the-line torque.
### Key Performance Benefits
- Torque Optimization: Generates up to 3–5% horsepower and mid-range torque increases over stock factory exhaust cans.
- Deep V-Twin Rumble: Retains a rich, throaty V-Twin exhaust bark under load without harsh high-frequency noise.
- Thermal Mitigation: Full-coverage heat shields buffer extreme exhaust heat away from legs and rider boots.
Vehicle Compatibility Guide
Vance & Hines PCX 3″ Round Twin Slash Slip-On Mufflers (Part #16863 Chrome / #46863 Black) fit 2018–2024 Harley-Davidson Softail models equipped with OEM dual stagger or shorty header pipe configurations:
### Harley-Davidson Softail Models (2018–2024)
- Street Bob / Street Bob 114: FXBB, FXBBS (2018–2024)
- Softail Standard: FXST (2020–2024)
- Low Rider / Low Rider S / Low Rider ST: FXLR, FXLRS, FXLRST (2018–2024)
- Fat Bob / Fat Bob 114: FXFB, FXFBS (2018–2024)
- Slim & Deluxe: FLSL, FLDE (2018–2021)
- Breakout / Breakout 117: FXBR, FXBRS (2018–2024)
Fitment Note: Direct bolt-on for models with standard dual stagger headers. Check mounting bracket alignment for models equipped with custom 2-into-1 or aftermarket headers.
Step-by-Step DIY Installation Guide
Installing Vance & Hines PCX 3″ Twin Slash Slip-Ons takes under 45 minutes using standard shop hand tools.
### Required Tools
- 3/8″ Drive Ratchet with 1/2″ and 9/16″ sockets
- Torx key set (T27 / T30)
- Exhaust clamp removal tool or combination wrenches
- Penetrating lubricant
- Clean microfiber towel
### Step 1: Removal of Factory Softail Mufflers
Ensure the bike is completely cool and safely supported on a stand. Spray penetrating lubricant onto the inlet joint connections. Remove the mounting hardware securing the stock mufflers to the lower frame bracket. Loosen the factory Torca clamps, then gently twist and slide the stock mufflers rearward off the head pipes.
### Step 2: Prepping Clamps & Slide Alignment
Slide new heavy-duty exhaust clamps over the expansion inlets of your new Vance & Hines PCX Twin Slash mufflers. Apply a thin layer of anti-seize or lubricant to the header pipe tips to facilitate smooth positioning.
### Step 3: Mounting the PCX Twin Slash Mufflers
Slide the Vance & Hines mufflers forward onto the header pipe outlets until fully seated against the stops. Align the rear bracket mounting points with the frame support rail. Finger-tighten the mounting bolts, verify that both twin slash tips align evenly, and torque all hardware and clamps to factory service specifications.
Frequently Asked Questions
### Is an ECU re-tune required when installing PCX Twin Slash slip-ons?
Because Vance & Hines PCX technology maintains optimal backpressure and catalytic flow, an ECU re-tune is not strictly mandatory if you are retaining the stock air cleaner. However, adding an ECU tuner (like the Vance & Hines Fuelpak FP4) will optimize fuel ratios and maximize overall power gains.
### Are these mufflers 50-state emissions legal?
Yes. The integrated PCX™ catalyst technology meets EPA and CARB emissions criteria, making these slip-on mufflers compliant for street use in all 50 US states.
### Order Your Vance & Hines PCX 3″ Twin Slash Slip-Ons Today
Give your 2018–2024 Harley-Davidson Softail cruiser the sound, performance, and emissions-compliant power it deserves. Order your **Vance & Hines PCX 3″ Round Twin Slash Slip-On Mufflers** today with fast shipping!
