Vance & Hines Big Radius Quiet Baffle Insert
Acoustic Tuning & Decibel Suppression for Big Radius Exhaust Systems
Tame harsh high-frequency exhaust rasp without losing the aggressive V-Twin roar you love with the genuine Vance & Hines Big Radius Quiet Baffle (Part #23081). Designed specifically for Vance & Hines Big Radius 2-Into-2 exhaust systems, this replacement performance insert lowers volume by approximately 2 to 3 decibels while shifting the acoustic profile down to a deeper, richer bass frequency.
Constructed from high-strength steel and wrapped in specialized high-density fiberglass acoustic packing, these quiet baffles smooth out exhaust gas pulses. By introducing tuned backpressure into curved Big Radius pipes, they eliminate hollow harshness at high RPMs and prevent low-end torque loss on fuel-injected and carbureted V-Twin engines.
Technical Specifications & Product Details
| Feature / Metric | Product Specification | Rider Benefit |
|---|---|---|
| Brand / Manufacturer | Vance & Hines (Made in USA) | Direct-fit OEM engineering for seamless integration into Big Radius pipes |
| Sound Reduction Rating | 2 dB to 3 dB Decibel Reduction | Eases overall exhaust harshness and reduces long-distance rider fatigue |
| Internal Construction | Perforated Steel Core with Glass Packing | Absorbs high-pitch metallic resonance to deliver a deeper bass exhaust note |
| Part Number Reference | V&H Part #23081 (Sold Individually) | Standard replacement size for 2.5-inch diameter Big Radius 2-Into-2 systems |
| Hardware Inclusion | Pre-Drilled Mounting Point & Screw | Ensures a secure bolt-in fitment that prevents internal rattle or vibration |
Performance Benefits & Sound Characteristics
### Optimized Backpressure for Mid-Range Torque
Unbaffled or fully open drag-style pipes can cause exhaust gas reversion, leading to flat spots in low-to-mid RPM acceleration. The Vance & Hines Big Radius Quiet Baffle introduces a precise amount of exhaust backpressure. This stabilizes exhaust pulse velocity, helping your engine build clean, linear torque right off the line.
### Key Advantages
Exhaust System Compatibility Guide
Vance & Hines Big Radius Quiet Baffles (Part #23081) are designed to fit 2.5-inch outer diameter Vance & Hines Big Radius 2-Into-2 exhaust systems across multiple Harley-Davidson families:
### Compatible Exhaust Systems
- Harley-Davidson Softail: Big Radius 2-Into-2 Systems (All Years)
- Harley-Davidson Dyna: Big Radius 2-Into-2 Systems (All Years)
- Harley-Davidson Sportster: Big Radius 2-Into-2 Systems (All Years)
Fitment Note: Sold individually. Dual exhaust pipes (such as Big Radius 2-Into-2) require a quantity of two (2) baffles. Will not fit Big Radius 2-Into-1 single-pipe exhaust systems or other exhaust lines (such as Shortshots or Twin Slash).
Step-by-Step DIY Installation Guide
Replacing or installing quiet baffles in your Vance & Hines Big Radius pipes takes approximately 20 to 30 minutes using basic shop tools.
### Required Tools
- 3/8″ Drive Ratchet with 3/16″ Allen / Hex socket or key
- Soft-head rubber mallet or wooden block
- Penetrating lubricant (WD-40 or similar)
- Needle-nose pliers or retention hook
### Step 1: Removing Existing Baffles or End Hardware
Ensure the motorcycle and exhaust pipes are completely cool. Locate the retaining fastener screw near the exit tip on the underside of each Big Radius pipe. Remove the socket head screw using a hex key. If replacing old baffles, spray penetrating oil into the pipe outlet and use pliers to pull the factory baffles clear.
### Step 2: Prepping the Quiet Baffle
Verify that the fiberglass wrapping around the new quiet baffle is tightly secure and smooth. Do not remove the protective tape wrapping around the fiberglass matting; it is designed to burn off harmlessly during the initial heat cycle.
### Step 3: Inserting and Securing
Align the pre-threaded mounting hole on the quiet baffle with the mounting hole in the exhaust pipe heat shield/body. Slide the baffle into the pipe tip. If fitment is snug, tap gently with a rubber mallet until the mounting holes align perfectly. Thread the retention bolt back in place and torque securely.
Frequently Asked Questions
### How many baffles come in a package?
Vance & Hines quiet baffles are sold individually. Because Big Radius 2-Into-2 systems use two separate pipe outlets, you must purchase a quantity of two (2) baffles to complete both pipes.
### Will installing these quiet baffles require an ECU re-tune?
In most cases, installing quiet baffles into an existing Big Radius setup slightly increases backpressure, which generally improves low-end fuel air mixtures. A re-tune is typically not required unless you are simultaneously changing your air intake or header setup.
### Order Your Vance & Hines Big Radius Quiet Baffles Today
Refine your Harley-Davidson’s exhaust note and enjoy a deeper, richer sound on every ride. Order your **Vance & Hines Big Radius Quiet Baffles** today with fast shipping!
