Two Brothers Comp-S 2-Into-1 Exhaust For Harley Dyna 1999-2005

Two Brothers Comp-S: Race-Proven Performance for the 1999-2005 Dyna

The Two Brothers Racing (TBR) Comp-S 2-into-1 for 1999-2005 Harley-Davidson Dyna models—including the Super Glide, Low Rider, and Wide Glide—is built for the rider who values function over form. In the world of high-performance V-Twins, TBR is legendary for bringing sportbike engineering to the cruiser market. This system replaces the heavy, restrictive factory pipes with a lightweight, hand-TIG welded 304 stainless steel masterpiece. For owners of the early Twin Cam 88 engine, the Comp-S isn’t just an exhaust; it is a specialized performance tool that unlocks the engine’s ability to breathe, resulting in faster revs and a more aggressive power delivery that is felt immediately throughout the RPM range.

Internal Scavenging and “Club Style” Engineering

The heart of the Comp-S system is its 2-into-1 collector. By merging the pulses of the front and rear cylinders, TBR creates a scavenging effect that literally “pulls” spent exhaust gases out of the combustion chamber. This design is specifically tuned for the 1999-2005 Dyna chassis to ensure maximum ground clearance, allowing for more aggressive lean angles in the corners. The stepped header technology starts with a smaller diameter at the head to maintain low-end torque, then steps up to a larger diameter to accommodate the high-flow volume needed for top-end horsepower. The system is finished with a signature high-temp carbon fiber end cap, providing a high-tech look that has become the calling card of the modern performance bagger and club-style Dyna movement.

Expert Tuning & Installation Advice

As specialists in early Twin Cam performance, we know that the 1999-2005 Dynas require a specific setup to maximize a 2-into-1 system. Pro Tip: Most 99-05 Dynas are carbureted. When installing the TBR Comp-S, a Stage 1 Carburetor Jet Kit is absolutely mandatory. Because this system flows air so much faster than stock, the engine will run dangerously lean without a re-jet, leading to excessive heat and potentially damaging the valves. Installation Note: Stainless steel will naturally turn a golden-straw color (patina) after the first few heat cycles; this is a hallmark of high-quality stainless and is not a defect. To ensure an even color, wipe the entire system down with rubbing alcohol or a non-residue cleaner before the first start to remove any skin oils or fingerprints. Gasket Note: Always use new flat-style exhaust gaskets rather than tapered ones to ensure the header flange seats perfectly against the head port.

The Signature TBR Sound

The sound of the Comp-S is purely mechanical and authoritative. At idle, it delivers a crisp, rhythmic “thump” that is deep and bass-heavy. Under hard acceleration, it transforms into a high-velocity roar that sounds more like a race bike than a traditional cruiser. Every TBR system is 100% designed and assembled in the USA. For the 1999-2005 Dyna rider who wants the best-performing, lightest, and most aggressive 2-into-1 on the market, the Two Brothers Comp-S is the definitive choice.

Fitment Note: Fits 1999-2005 Dyna models. Will not fit with mid-controls on some Wide Glide models without slight modification. Not compatible with FLD Switchback models.

Two Brothers Comp-S 2-Into-1 Exhaust For Harley Dyna

Features:

• Modern engineering with authentic bobber styling
• Specially designed and tuned system for max torque and increased horsepower
• Swept-up muffler for enhanced ground clearance
• Carbon fiber end cap
• Mandrel bent stainless steel tubing
• All TIG welds done by hand
• High-temp stainless steel wool and packing material
• Fits with forward and mid controls
• Accepts stock O2 sensor
• Includes all mounting hardware