Dyna 2-Into-1 Exhaust System | Bernings Performance

Bernings Performance 2-1 Exhaust System for 1991-2017 Dyna

1991-2005 Dyna / Raw Stainless / Standard

$1,477.00

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Bernings Performance 2-1 Exhaust System for 1991-2017 Dyna

$1,477.00

Fitment

Finish

Bore Size

In stock

Bernings Performance BP-9105D-R

The Bernings Performance 2-1 Exhaust System is a high-performance stainless steel exhaust upgrade for 1991–2017 Harley-Davidson Dyna models. Designed to increase exhaust flow, support more torque and power, and deliver a clean performance-inspired look, this system is built for riders who want a premium 2-into-1 exhaust with serious performance output.

Important Note: All Bernings Performance Exhaust Sytstems come equipped with 18mm O2 bungs, if your bike is carbureted or not equipped with O2 sensors you will need to purchase 18mm O2 bung plugs separately. 18mm to 12mm O2 bung reducers are also available for purchase separately.

Product Details

Fits:

1991–2005 Harley-Davidson Dyna models
2006–2017 Harley-Davidson Dyna models

Please select the correct fitment option for your motorcycle before ordering.

Note: Standard Bore is ideal for stock motors or simple bolt-on builds, while the Big Bore option is designed for built motors with higher compression, ported heads, headwork, big bore kits, and more aggressive engine combinations.

Always confirm your exact year, model, engine setup, exhaust sensor requirements, tuning setup, and clearance before installation.

High-Performance 2-Into-1 Exhaust Design
Designed to improve exhaust flow, increase performance potential, and support more torque and horsepower on Dyna models.

Stainless Steel Construction
Built from stainless steel for durability, heat resistance, corrosion resistance, and long-term performance.

Standard and Big Bore Options
Available in standard bore or big bore configurations so riders can better match the exhaust to their motor setup.

18 mm O₂ Ports
Features 18 mm O₂ ports for easy tuning compatibility.

3.5" Muffler Body
Features a 3.5" diameter muffler body for a clean performance look, strong sound, and high-flow exhaust volume.

Standard Bore Baffle
Standard bore systems use a 2.25" perforated stainless steel baffle, making them a strong choice for stock motors and basic performance builds.

Big Bore Baffle
Big bore systems use a larger 2.5" perforated stainless steel baffle for more aggressive engine combinations that need additional exhaust flow.

Maintenance-Free Stainless Steel Packing
Uses maintenance-free stainless steel packing for durability and long-term performance without frequent repacking.

Stepped Primary Tubes
Features precision mandrel-bent and welded 1.75" to 1.875" stepped primaries that merge into a 2" welded collector.

Efficient Exhaust Scavenging
The gradual stepped primary design helps maintain exhaust velocity, improving scavenging efficiency and supporting better power delivery.

Raw or Polished Finish Options
Choose raw stainless for a race-inspired look or polished stainless for a cleaner, more refined finish.

Built for Dyna Performance Builds
A premium exhaust option for riders building a stronger, cleaner, and better-performing 1991–2017 Dyna.