Vance & Hines Quiet Baffle For Eliminator 4″ (400) Slip-On Mufflers
Tame Exhaust Volume Without Sacrificing Signature V-Twin Performance
Enjoy the muscular styling and deep roar of your 4-inch slip-ons while keeping sound levels comfortable with the Vance & Hines Quiet Baffle for Eliminator 400 Mufflers (Part #23703). Engineered specifically as a drop-in insert for Vance & Hines 4″ Eliminator series mufflers, this quiet baffle reduces overall exhaust output by 2 to 3 decibels (dB). Whether you want to maintain neighborhood peace during early morning warm-ups or eliminate high-speed helmet drone on long touring rides, this baffle offers a smoother, deeper, and more refined exhaust frequency.
Made in the USA from heavy-gauge steel and wrapped in high-density thermal fiberglass packing, the Eliminator 400 Quiet Baffle tones down harsh high-pitched exhaust barks while preserving essential engine backpressure for broad low-end torque response.
Technical Specifications & Product Details
The **Vance & Hines Quiet Baffle** (Part #21859) for the **Eliminator 400 (4″) Slip-On Mufflers** is designed to tone down the exhaust volume while deepening the overall exhaust note.### Key Details & Specs* **Part Number:** Vance & Hines **21859**
* **Decibel Reduction:** Lowers sound output by approximately **2 dB to 4 dB** compared to the standard baffle.
* **Tone:** Reduces harsh high-frequency harshness, producing a deeper, rumbling exhaust note rather than an aggressively loud bark.
* **Fitment:** Engineered specifically for Vance & Hines **Eliminator 400 (4-inch)** Touring Slip-On Mufflers (commonly installed on Harley-Davidson Touring models).
* **Performance:** Provides slightly more backpressure, which can help smooth out low-end torque on some fuel-injected setups.—### What to Expect vs. Standard Baffles| Feature | Standard Eliminator Baffle | Quiet Baffle (#21859) |
| :— | :— | :— |
| **Volume Level** | Loud, aggressive roar | Moderately loud, deep rumble |
| **Harshness/Bark** | High under heavy acceleration | Mellowed out, smoother |
| **Highway Drone** | Noticeable at steady speeds | Significantly reduced for long rides |
| **Backpressure** | Lower | Slightly higher |—### Installation Tips1. **Tools Needed:** Allen wrenches, a small slide hammer or hook tool, and thread locker (e.g., Loctite 243).
2. **Removing Old Baffles:** Standard baffles can stick due to heat cycling and carbon buildup. Spray a light lubricant (like WD-40) inside the end cap perimeter and let it sit before pulling.
3. **Inserting New Baffles:** Ensure the fiberglass wrapping stays tightly wound around the baffle body during insertion. Wrapping painter’s tape around the fiberglass can help compress it; the tape will burn off harmlessly once the exhaust gets hot.
4. **Secure Fasteners:** Always apply medium-strength thread locker to the retaining screws to prevent them from vibrating loose.
| Feature / Metric | Product Specification | Rider Benefit |
|---|
