NhB Exhaust for Twin Cam Baggers

Burns StainlessSKU: SYHD-TC-STD
1 review
Price:
Sale price $2,358.00

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Description

Our TcB (Twin-Cam Bagger) is specially made for high-performance 124ci+ Twin-Cams and part of our "No Holds Barred" (NhB) line of exhaust for Harley-Davidson.

** Our NhB Systems are very popular. Please allow us 3 weeks to build your exhaust.**

“For years we have been working with many of the world’s finest big-twin tuners helping them win races, set records and make big power in dyno shootouts with our exhaust builds,” comments Vince Roman, Technical Director at Burns Stainless. “It became apparent that there were not any well-engineered stainless aftermarket systems available for these big engines, so we decided to offer a 2-into-1 system incorporating the famous Burns merge collector.”

Three NhB Styles Available For Your Bike

Megaphone Muffler Style – This mid-length system is all about delivering serious performance, extending just ahead of the stock axle to give you unmatched power. Get ready to feel the boost in midrange torque and impressive top-end horsepower that’ll take your ride to the next level. Built for versatility, this exhaust system works seamlessly with both standard and long (CVO) bags. Elevate your bike with the ultimate in racing exhaust technology.

Road Race Style – Performance Bagger Exhaust System:
The Road Race performance bagger system is built for riders who live for that track-ready power and precision. Designed for bikes with mid-controls, this system delivers where it matters. The 1-7/8” to 2” to 2-1/8” stepped pipes wind around the cam cover, hugging the engine and frame to give you the ground clearance you need to tackle those tight canyon curves.

With our X-design program behind it, this pipe is all about mid-range power, giving you that torque boost right when you need it most. We’ve also added our ultra-light exhaust muffler with a turnout—keeping your ride light and powerful. And when the packing finally gives out, don’t worry—the repackable muffler keeps your ears safe while delivering the same killer performance.

The Extended Style (EXT) – This full-length system is all about keeping that classic long exhaust look while making sure the sound stays where it belongs—behind you. While it might give up a bit of midrange torque and top-end horsepower compared to the Megaphone style, it still packs plenty of punch. Designed to work with both standard and long (CVO) bags, this exhaust system offers the perfect blend of style and functionality for a ride that looks as good as it performs.

Additional Options:

Heat Shield – Includes a stainless-steel heat shield that partially covers the rear exhaust primary. The shield is supplied with two worm gear clamps for easy and secure installation.

Black Ceramic Coating – Our high-temperature ceramic coating enhances the appearance of your exhaust while minimizing heat transfer. It helps retain energy in the exhaust gases for optimal scavenging. Additionally, the inside of the exhaust features a non-stick copper coating that reduces carbon deposits on the walls, ensuring maximum exhaust flow. Gray is also available by special order—please call.

PLEASE NOTE:
"Due to the extreme operating conditions associated with high-performance engine builds, Burns Stainless ceramic-coated exhaust systems are not warrantied against coating discoloration, flaking, or failure resulting from excessive exhaust temperatures. These issues are typically caused by improper air/fuel ratios, insufficient tuning, or other build-related factors beyond our control. Customers assume full responsibility for ensuring their engines are tuned within safe operating parameters. Coating integrity is not covered under warranty when used in racing or high-performance applications."

Features

  • Full system exhaust including mufflers
  • Mandrel bent stainless steel tubing
  • 100% Argon back-purged TIG welding for high strength and precision fitment
  • Primary length is adjustable to optimize torque and power and includes an adaptable header mount
  • Systems are constructed from ASTM269 304 stainless steel tubing for best combination of weight savings and durability
  • Made in the USA

Additional Options

Standard primary length is 33 inches.

Product comes with support bracket for reverse cone megaphone muffler.

Product ships standard with 18mm O2 sensor bungs. Need 12mm also?  Let Burns Stainless install them for you!

Options are:

  • Two (2) 18mm factory installed O2 bungs (Standard)
  • Two (2) 12mm PLUS two (2) 18mm factory installed O2 bungs

Add desired above bung option to shopping cart

Details

Proper Port Fitting Design

Due to the high velocity at the exhaust port, it is imperative that the flow be unobstructed. We have seen as much as a 5% loss of power for poorly matched headers and ports. To ensure proper flow, Burns has designed port fittings that properly align the exhaust header to the port. Also, the exacting dimensions of the fitting allows for better, more repeatable fabrication ensuring a proper fit on the motorcycle. On the Milwaukee 8 system, we have engineered a CNC machined fitting to improve the fitment of the pipes.

Stepped Primaries

By keeping the header size close to the exhaust port size, exhaust gas velocity is kept high at the port reducing the possibility of reversion. This is especially important with the unequal firing impulses inherent to the V-Twin single pin crank arrangement. Enlarging the tube with stepped pipes ensures that wall drag losses are minimized keeping the exhaust potential available for maximum power but also allowing for broad power band.

Collector Design

The 2-into-one collector helps minimize exhaust reversion while helping to scavenge the exhaust cylinder during each exhaust cycle. The efficient scavenging of the cylinder during the exhaust and overlap period allows for the maximum amount of air and fuel in the cylinder assuring maximum power.

Muffler

The Burns megaphone muffler provides the Pro-Stock appearance of the exhaust while maximizing performance and reducing the sound of the exhaust. The deep, mellow sound is a by product of the specially designed core perforations.

The small holes provide effective damping of sound waves while allowing for a smooth bore minimizing drag losses and improving power output.

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Vince In Shorts NhB Kits

Additional Product Information

Burns Stainless has developed an exhaust system unique enough to complement the classic styling of the Harley-Davidson. Burns background in performance is highlighted on this exhaust with horsepower and torque gains. The systems are all handcrafted in the USA with all the TIG welds being perfected by hand. It has been designed and tuned for max torque and increased horsepower.

  • Full system exhaust including mufflers.
  • Mandrel bent stainless steel tubing.
  • 100% Argon back-purged TIG welding for high strength and precision fitment.
  • Primary length is adjustable to optimize torque and power and includes an adaptable header mount.
  • Systems are constructed from ASTM269 304 stainless steel tubing for best combination of weight savings and durability
  • Made in the USA

FLHR - Road King, FLHRC - Road King Classic, FLHRS - Road King Custom, FLHS- Electra Glide Sport, FLHT - Electra Glide Standard, FLHTC - Electra Glide ClassicFLHTCU - Ultra Classic Electra Glide, FLHTCUL -Ultra Classic Electra Glide, LowFLHX - Street Glide, FLHXSE - CVO Street Glide, FLHTCUSE - CVO Ultra Classic Electra Glide, FLHTK - Electra Glide Ultra Limited, FLHTKL - Electra Glide Ultra Limited, Low FLHX - Street Glide, FLHXS - Street Glide Special, FLTR Road Glide, FLTRSE - CVO Screamin' Eagle Road Glide FLTRX - Road Glide Custom FLTRXS - Road Glide Special

Standard primary length is 33 inches - Call for custom length
Product requires support bracket for reverse cone megaphone muffler.

Options are:

  • Fabricate your own
  • Allow Burns Stainless to provide the bracket
    For the latter, simply add the Burns Stainless Megaphone Muffler Support Bracket to your shopping cart

    Product ships standard without O2 sensor bungs. Let Burns Stainless install them for you!

    Options are:
    Two (2) 12mm factory installed O2 bungs
    Two (2) 18mm factory installed O2 bungs
    Two (2) 12mm PLUS two (2) 18mm factory installed O2 bungs
    Add desired above bung option to shopping cart

Burns NhB exhaust features engineered port fittings to ensure proper fitment and port flow.

Due to the high velocity at the exhaust port, it is imperative that the flow be unobstructed. We have seen as much as a 5% loss of power for poorly matched headers and ports. To ensure proper flow, Burns has designed port fittings that properly align the exhaust header to the port. Also, the exacting dimensions of the fitting allows for better, more repeatable fabrication ensuring a proper fit on the motorcycle. On the Milwaukee 8 system, we have engineered a CNC machined fitting to improve the fitment of the pipes.

Stepped headers are known in the highest level of motorsports to be the best design for scavenging the cylinder during the exhaust stroke.

By keeping the header size close to the exhaust port size, exhaust gas velocity is kept high at the port reducing the possibility of reversion. This is especially important with the unequal firing impulses inherent to the V-Twin single pin crank arrangement. Enlarging the tube with stepped pipes ensures that wall drag losses are minimized keeping the exhaust potential available for maximum power but also allowing for broad power band.

The Burns NhB exhaust has been designed with X-Design, Burns Stainless’ exclusive, proprietary exhaust program developed and fine tuned for over 15 years in conjuction with engineers and racers in the highest echelons of motorsports.

The objective of X-Design is to provide the broadest powerband without sacrificing top-end power.

The Burns NhB exhaust is designed around the famous Burns merge collector that has been used in Harley pro-stock drag racing.

The 2-into-one collector helps minimize exhaust reversion while helping to scavenge the exhaust cylinder during each exhaust cycle. The efficient scavenging of the cylinder during the exhaust and overlap period allows for the maximum amount of air and fuel in the cylinder assuring maximum power.

The Burns megaphone muffler provides the Pro-Stock appearance of the exhaust while maximizing performance and reducing the sound of the exhaust. The deep, mellow sound is a by product of the specially designed core perforations.

The small holes provide effective damping of sound waves while allowing for a smooth bore minimizing drag losses and improving power output.

See Burns In Action

      

Customer Reviews

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M
Mike Kritzman
My review of the T/C NHB

Excellent workmanship on fabrication.Install was very smooth,as fitment was good.i i have not put on my dyno yet,But seat of pants feeling from 3.5K RPM on up in the powerband is fantastic.Expensive and worth it.

Glad you like it Mike. Get back to me with dyno numbers when you get them!

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