World's Largest Aftermarket Motorcycle Parts and Accessories Superstore!


Weekend Wrenching. Shop Mirrors Now
Weekend Wrenching. Shop Mirrors Now

Thunderheader Chrome 2-into-1 Exhaust System

22 Reviews

This product fits a variety of motorcycles. Please select yours so we can find the right part and guarantee fitment. Select A Motorcycle

  • Thunderheader Chrome 2-into-1 Exhaust System
Product may vary from photo(s).


The Gold Club is our premier membership program. For most items members receive 10% off every day, plus exclusive sales and benefits just for members. More Info Gold Club Price: $597.59

Free Ground Shipping

22 Reviews

Checking availability...

– Order in the next to ship today

J&P Part: 440-928


Thunderheader Chrome 2-into-1 Exhaust System

• Patented Anti-Reversion design

• Produces maximum HP without sacrificing low end torque

• Complete with all hardware needed

• Heat shields, 440-929 sold separately

Made In The USA This product was proudly made in the USA

Product Specs

Complete Header Pipe: Complete System

Design: Anti-Reversion Design

Exhaust System: 2 Into 1

Finish: Chrome

Header Pipe Diameter: 1-3/4″

Heat Shields Included: No

Manufacturer Part Number: 1031

Material: 16-gauge Steel

Product Color: Chrome

Sold in Units: Set


This product fits a variety of motorcycles. Please select yours so we can find the right part and guarantee fitment. Select A Motorcycle

Click (+) to view all compatible models

Harley-Davidson® Models

Dyna Fat Bob CVO FXDFSE : 2009
Dyna Fat Bob CVO FXDFSE2 : 2010
Dyna Fat Bob FXDF : 2008–2011
Dyna Low Rider EFI FXDLI : 2006
Dyna Low Rider FXDL : 2007–2011
Dyna Street Bob EFI FXDBI : 2006
Dyna Street Bob FXDB : 2007–2011
Dyna Super Glide 35th Anniversary EFI FXDI35 : 2006
Dyna Super Glide Custom EFI FXDCI : 2006
Dyna Super Glide Custom FXDC : 2007–2011
Dyna Super Glide CVO FXDSE : 2007
Dyna Super Glide CVO FXDSE2 : 2008
Dyna Super Glide EFI FXDI : 2006
Dyna Super Glide FXD : 2007–2010
Dyna Wide Glide EFI FXDWGI : 2006
Dyna Wide Glide FXDWG : 2007–2008, 2010–2011

Customer Reviews

Overall Rating:
5/5 based on 22 ratings

5 by

Amazing and easy to assemble!

5 by

exelent, bolted right on, runs great

5 by

Good fit and took care of the reversion problem on my 93" shovel.

5 by

looks good haven't gotton the motor to gether yet,for the sound and performance.nice chrome finisk

5 by

once again thunderheader works great

5 by

great exhaust system, good price. i wont run anything else

5 by

Wow what a difference a thunder header made on my 01 dyna... It plus theRSD judge Venturi air cleaner awoke my sled right up... Thanks J&P Cycles

5 by

excellent product quick delivery great sound and better performance

5 by

excellent exhaust system. Well made and a wonderful sounding system. Glad I purchased this exhaust

5 by

I have a Thunderheader on my '88 FXSTC, along with other modifications, and had it dynoed at the local HD Dealership. It dynoed real sweet. I have a '00 FLSTC which I am ready for a new exhaust system. I will go with a Thunderheader! I have tried multiple exhaust systems, and this system seems to do the best for performance (in my opinion). Wolf

5 by

Love the Thunder Header! :)

3 by

Customer Service was very helpful and friendly - but unfortunately i had to use it. The Thunderheader company rep was terrible. They would not even answer a technical question about their installation procedures (the install sheet did not list my model of bike as a fit, but their website did). Then, they require new port gaskets, but they didn't come with the new exhaust. That would have been nice to know when I placed the original order. (maybe J&P could note that in their web-site.) Installation was fair - they fit the engine okay, but the mounting backet did not fit properly. They look good and sound good right now - let's see how they hold up.

5 by

Had to replace my Thunderheader when it just plain turned to dust. (It was very old) The only choice was another Thunderheader. I run a EV-27 and E carb with this pipe and everyone thinks I have installed a big bore kit. This header really works.

3 by

The exhaust is an awesome product, I have used it for many years and have also suggested it to numerous people and customers of mine. The latest experience with Rich Products (ie Thunderheader) has been less than desirable. After 74 days from order, the exhaust has arrived. All components are in excellent shape and all pieces needed are there. The only downfall is for my customer to have to wait as long as they did, the engine build has been completed for 12+ weeks. So bottom line is, be prepared to wait.

5 by

I love the sound and increase in horsepower. Both my bikes have Thunderheaders. I will never buy any thing else.

5 by

Awesome sound. Looks great on bike.

5 by

Greta Sound!!! Love these pipes!

5 by

Added a good amount of power. Looks and sounds great. Perfect pipe for my superglide.

5 by

The best exhaust for Dyna in term of performance, sound and value for money. A must have for outlaw-style dyna, if you know what I mean.

5 by

Best Bolt On Header For More HP&Sound,Out There -Thank You Thunderheader,J&P-Very Very Happy! Makes Riding The Bike More Fun! I Got Five-CRAGAR"

5 by

Thunderheader 2 Into 1. I've Got 10 Harley's. 3 Off Them Have These Pipes On Them"Add A K+N Intake #63-1125P. Hang On! You Just Added About 20HP...REAL NICE!!!!!

5 by

Got the big block sound love it

Load More Reviews

Important Product Notes

Note: Please see U.S. EPA and your respective state and local regulations to confirm noise and emission compliance.

Important Exhaust Notes:

• Note: With any new exhaust, we recommend changes to carburetor jetting or use of an aftermarket fuel injection control module.

• There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Blueing is caused by tuning characteristics, cam timing, carburetor jetting, overheating, etc. and is not caused by defective manufacturing. No refunds on exhaust pipes once motorcycle is started unless there’s a manufacturer’s defect.

• Flanges and retaining rings are not included with most aftermarket exhaust for 1984-2013 Evolution and Twin Cam models. Re-use your existing hardware, or purchase replacement hardware.

Shipping Note

Additional oversized shipping charges will be applied for expedited shipments within the contiguous U.S. Shipping charges outside the contiguous U.S. are calculated by weight and dimension during checkout. Due to state regulations we cannot ship this item to the state of California.

Fast Free Shipping on Orders at $99.99 & Over
Free Tech
120 Day

Select Your Motorcycle

Live Help

Get Help From Our Industry Experts

Call Us 24/7 1-800-318-4823

Help / FAQs