Thunder header exhaust

War Thunder is an immensely popular online multiplayer game that puts players in the cockpits of World War II-era warplanes, tanks, and ships. In addition to unlocking exclusive ve...

Black 2 into 1 X-Series Exhaust System (w/o Saddlebag Bracket) - 1364XB Thunderheader. $1,839.00. Part #: 4410859 Mfg Part #: 1364XB. Add to compare. Results per Page. Viewing Results 1 - 26 of 26. Shop Thunderheader Exhaust Systems at Dennis Kirk. Best selection, low prices & orders over $89 ship free.The difference between thunder and lightning is that lightning is electromagnetic energy and thunder is sonic energy. Lightning actually causes thunder by rapidly heating and expan...Stainless Steel Wire Exhaust Port Gaskets and Heavy-Duty Hex Nuts - 65324-83-KW2 Genuine James. $22.46 Part #: 4403144 Mfg Part #: 65324-83-KW2. exact fit (15) Graphite Wire ... X-Series Exhaust System - 1074X Thunderheader. $1,656.00 Part … Add-On Falsee System for X-SERIES - 1075XFB Thunderheader. $599.00. Part #: 4410982 Mfg Part #: 1075XFB. Add to compare. Results per Page. Viewing Results 1 - 9 of 9. Shop Thunderheader Mufflers/Slip-ons at Dennis Kirk. Best selection, low prices & orders over $89 ship free. We Ship Today! Here is the video of the first start up of the new Thunderheader X-series 2 INTO 1 exhaust system for my 2022 Lowrider ST. This is part number 1364XB. Accord... Heat Shield Set for 2 into 1 Exhaust System 2014-2020 H-D Sportster - Forward Controls - Chrome Thunderheader. $161.60 $404.00. Thunderheader was one of the first companies in the aftermarket exhaust world for Harley's. After 30 years, there is still just one conclusion: The Thunderheader just works.

Thunder is caused by lightning, so it cannot happen independently. The loud cracking sound of thunder occurs when lightning raises the surrounding air temperature by thousands of d...Description. Thunderheader X Series M8 Softail. Designed to give maximum horsepower without sacrificing low-end torque. 2-into-1 systems with patented collector design that directs spent exhaust gases in a spiral motion through four acoustical damping chambers. Exhaust travels through these chambers at high velocity to scavenge spent exhaust ...Rating: 6/10 In Love and Thunder, the twenty-ninth entry in the Marvel Cinematic Universe (MCU), things start off well with an extended opening scene that introduces us to Gorr (Ch...SKU: TTH-1020-ATT. MPN: 1020. Thunderheader Model 1020 Exhaust for Harley-Davidson Shovelhead '70-'83. $1,080.00. Custom Made for you. Ships in 6-8 weeks. Select Color: By checking this box you agree that this item is for racing only and will not be used on public roads or land. Will not ship to California.5659 posts · Joined 2007. #1 · Jul 17, 2008. In this thread could members please post up any modifications you have done to your Thunderheader exhaust. I am really interested in any modifications to the inside.... ie: bending the baffle sideplates or adding a "lollipop" (a small piece of angle iron with a washer to the center of the baffle ...If you’ve ever experienced heat exhaustion firsthand, then we don’t have to tell you that it’s not fun — at all. With summer spreading across the United States, many folks are star...The exhaust manifold gasket helps seal the union between the exhaust manifold and the side of the engine’s cylinder head. In cases where the gasket is not installed properly, or th...

Upgrade your motorcycle with the Thunderheader 2 into 1 High Performance Exhaust System - 1026 and experience the ultimate combination of power, torque, and …Heat Shield Set for 2 into 1 Exhaust System 2014-2020 H-D Sportster - Forward Controls - Chrome Thunderheader. $161.60 $404.00. Thunderheader was one of the first companies in the aftermarket exhaust world for Harley's. After 30 years, there is still just one conclusion: The Thunderheader just works.Increased horsepower & unmistakable THUNDERHEADER™ sound. Year. Fitment. Chrome. Black. 2009. 2 INTO 1 long style (duals with Falsee left side). Comes with 18mm O2 Sensors. Sold Seperately - Heat Shields 1084 (top rear), 1085 (top front), & … Ramjet Racing is a Motorcycle Shop in Phoenix. We Specialize in Motorcycle Service & Repair. With the Largest Selection of Accessories, Including Aftermarket, FXR, DYNA, Brakes, Exhaust & More. Call Ramjet Racing Now, (602) 788-0364 Shop Thunderheader Mufflers/Slip-ons at Dennis Kirk. Best selection, low prices & orders over $89 ship free. We Ship Today! www.denniskirk.com. 800-969-7501 ... Chrome Falsee Left for 1074X 2-Into-1 Exhaust - 1075XF Thunderheader. $649.00 Part #: 4410981 Mfg Part #: 1075XF. Add to compare Add-On Falsee System for X-SERIES - 1075XFB … Home/. The classic sound of a Flowmaster® chambered exhaust, our American Thunder® Series features mufflers tuned to deliver more power, torque, throttle response and mileage. Best of all, these exhaust systems take sedate vehicles and delivers a deep aggressive tone.

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Upgrade your exhaust system now and maximize your motorcycle's performance with the Thunderheader Black X-Series Exhaust System. Trust in the quality craftsmanship of …Black Full Coverage Heat Shields - 1167B Thunderheader. $265.00. Part #: 251727 Mfg Part #: 1167B. Add to compare. Chrome Heat Shields for Thundercone Slip-Ons - 1353 Thunderheader. $227.00. Part #: 252131 Mfg Part #: 1353. Add to compare. Black Heat Shields for Thundercone Slip-Ons - 1353B Thunderheader.Exhaust Systems and Heat Shield Sets. Model 1071 THUNDERHEADER™ for 2010-2014 Touring. TRUE DUAL THUNDER™ for model years 2010-2016. Individual pipes for each cylinder and featuring our new Cross-Under™ design. Also a balance tube is incorporated in between primary tubes to improve torque. Thunder Exhaust System Co., Ltd. is Taiwan supplier and manufacturer in Automobile industry market since 1995. THUNDER has been offering our customers high quality Exhaust, Manifold, Header, Muffler, Silencer, Rear Muffler, Catback, Catalytic, Turbo Manifold, Inter Pipe. With both advanced technology and 19 years experience, THUNDER always make ...

XL 883 Custom XLH 883 Hugger XL Sportster XL 1200C Custom XL 1200S Sport XL 1200 Roadster XL 1200N Nightster Fits all Twin Cam DYNA models 1999-2005. Increased horsepower & unmistakable THUNDERHEADER™ sound. Year. Fitment. Chrome. Black. 1999-2005. Fits models with Center and Forward controls. Sold Seperately - Heat Shields 1094 (top rear), 1095 (top front), & 1090 (collector)1395 posts · Joined 2009. #5 · Nov 15, 2011. Fat cat hands down is best all around, i ran a thunder header for yrs, but got the money and got a better exhaust, thunder headers do well but usually have a nasty dip at around 2-2500 rpm and then pick back up. Have the dyno charts to prove the fat cat is smoother and higher output power …The widest part of the triangle being towards the rear of the header. To increase back pressure bend the wider part of the triangle towards the outer wall of the header. Repeat this for all four sides evenly. This will increase back pressure which maybe desirable on set ups with cams with more overlap.Black Heat Shields for Thundercone Slip-Ons - 1353B Thunderheader. $198.10. Part #: 252132 Mfg Part #: 1353B. Add to compare. Results per Page. Viewing Results 1 - 5 of 5. Shop Thunderheader for your 2021 Harley-Davidson Softail Low Rider S - …Featuring a 2-into-1 design with a patented collector, this exhaust system directs spent exhaust gases in a spiral motion through four acoustical dampening chambers. This unique design enhances exhaust scavenging, effectively eliminating back pressure and improving overall engine performance.Headers and footers in Microsoft Word refer to tiny pieces of information, such as page numbers, that can be very important when producing a document. Headers and footers can also ...Increased horsepower & unmistakable THUNDERHEADER™ sound. Year. Fitment. Chrome. Black. 2000-2006. All model Softails. Sold Seperately - Heat Shields 1305 (top rear), 1306 (top front), & 1207 (collector) 1027.Harley-Davidson Screamin' Eagle Stage 4 with a ThunderHeader Exhaust System. Details, Test Ride, and freeway Shredding http://www.laidlawsharley.comSupport m...But unless I mention it, folk never notice. Some think I have three pipes. Now that's funny. Stop off connection. Right side bringing both headers into one pipe. Stop off from the left side of the bike. Flowing into the false pipe. A little closer shot of the stop off connection from the right side. 4.Nov 15, 2011 · 1395 posts · Joined 2009. #5 · Nov 15, 2011. Fat cat hands down is best all around, i ran a thunder header for yrs, but got the money and got a better exhaust, thunder headers do well but usually have a nasty dip at around 2-2500 rpm and then pick back up. Have the dyno charts to prove the fat cat is smoother and higher output power and trq.

Products and Parts . Important Information Regarding California-Certifed Motorcycles (click here) l

Chrome Thundercone Slip-On Mufflers - 1061 Thunderheader. $795.00. Part #: H25010 Mfg Part #: 1061. Add to compare. Results per Page. Viewing Results 1 - 5 of 5. Shop for Thunderheader Exhaust for your 2015 Harley-Davidson Street Glide Special - FLHXS at Dennis Kirk.Onimoto has an interesting post about how to trace an e-mail. Onimoto has an interesting post about how to trace an e-mail. The purpose of this guide is to show the process involve...Start up and walk around of a Thunderheader Exhaust System on a Harley-Davidson Milwaukee-Eight Engine with the Screamin' Eagle Stage IV Build. htttp://www.L...THUNDERHEADER EXHAUST - FXR. by THUNDERHEADER. $1,049.99 - $1,099.99. From $96.30/mo with. Check your purchasing power. Ramjet's has been selling Thunderheaders for nearly 30 years! Shortly after being introduced to the market in the late '80s, Thunderheader 2:1 exhaust systems became THE performance exhaust system for your Harley-Davidson.Celtic Thunder, the internationally renowned Irish music group, has announced their highly anticipated tour schedule for fans worldwide. With their captivating performances and pow...Imzz Elite Thunderheader Exhaust Bracket. Rated 4.10 out of 5 based on 10 customer ratings. ( 10 customer reviews) $ 199.95. 7/8″ 188 Thick Wall Tubing for a stiff mount of the exhaust to the bike. Laser cut 3/8″ and 1/4″ thick mounting plates for solid mounting. 100% TIG welding for strength.5659 posts · Joined 2007. #1 · Jul 17, 2008. In this thread could members please post up any modifications you have done to your Thunderheader exhaust. I am really interested in any modifications to the inside.... ie: bending the baffle sideplates or adding a "lollipop" (a small piece of angle iron with a washer to the center of the baffle ...

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Black Heat Shields for Thundercone Slip-Ons - 1166B Thunderheader. $169.00. Part #: 252134 Mfg Part #: 1166B. Ultimate Matte Finish Protectant - 98122 Star Tron. $11.08. Part #: 314412 Mfg Part #: 98122. Find the Thunderheader Black Thundercone Slip-On Mufflers at Dennis Kirk. Shop our complete selection of Harley-Davidson Motorcycle … Thunderheader 2 into 1 High Performance Exhaust System. ThunderHeader head pipes have been tuned to the proper length and diameter to produce maximum horsepower and a excellent torque curve. A patented collector is used. The collector is designed to direct spent gases through four acoustical dampening chambers. Find Flowmaster Stainless Steel American Thunder Exhaust Systems and get Free Shipping on Orders Over $109 at Summit Racing! Flowmaster Stainless Steel American Thunder exhaust systems have been designed with the latest exhaust technology available. Through this technology, you will experience improvements in acceleration, …2 into 1 High Performance Exhaust System - 1016 Thunderheader. $1,079.00. Part #: H44013 Mfg Part #: 1016. Add to compare. Results per Page. Viewing Results 1 - 1 of 1. Shop for Thunderheader Harley-Davidson FXR Exhaust at Dennis Kirk. Best selection, lowest prices, plus orders over $89 ship free. We Ship Today!Black 2 into 1 X-Series Exhaust System (w/o Saddlebag Bracket) - 1364XB Thunderheader. $1,839.00. Part #: 4410859 Mfg Part #: 1364XB. Add to compare. Results per Page. Viewing Results 1 - 26 of 26. Shop Thunderheader Exhaust Systems at Dennis Kirk. Best selection, low prices & orders over $89 ship free.Find many great new & used options and get the best deals for Flowmaster 17129 American Thunder Header-Back Exhaust System - Dual at the best online prices at eBay! Free shipping for many products!Thunderheader jetting recommendations. I'm running a thunderheader and cv40 carb from a twin cam. The needle is the adjustable type and is currently set up in the middle position. I'm running 45 pilot and 180 main... some hesitation during the roll on in high speed. Running a mooneyes air cleaner color with the "stock" paper element...We are a dealer for Thunderheader exhaust - we can get any exhaust, heat shields, or parts you need from them. Available in black or chrome, for midset or forward controls - give us a call or shoot us an email for latest pricing and to ensure we get the correct part for your bike. 508-995-6764 / [email protected] Thunder is an immensely popular online multiplayer game that puts players in the cockpits of World War II-era warplanes, tanks, and ships. In addition to unlocking exclusive ve...Find Flowmaster American Thunder Exhaust Systems and get Free Shipping on Orders Over $109 at Summit Racing! Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's …The new Thunderheader™ X-Series™ for Touring is our large diameter exhaust specifically designed for big cubic inch engines, built to produce big numbers. The X-Series™ is designed with 2 in. primary tubes with a 12 degree transition chamber to allow more exhaust flow. Unique patented baffle in conjunction with the trademark tail cone is ...Exhaust Systems and Heat Shield Sets. FXR model years 1987-1994 with Center Contols. Re-jet carburetor as necessary. Increased horsepower & unmistakable THUNDERHEADER™ sound. Fits models with stock center pegs. Thunderheader™ Exhaust Systems are legal for CLOSED-COURSE COMPETITION use only. ….

Thunderheader Touring. Designed to give maximum horsepower without sacrificing low-end torque. 2-into-1 systems with patented collector design that directs spent exhaust gases in a spiral motion through four acoustical damping chambers. Exhaust travels through these chambers at high velocity to scavenge spent exhaust gases from the …Thunderheader jetting recommendations. I'm running a thunderheader and cv40 carb from a twin cam. The needle is the adjustable type and is currently set up in the middle position. I'm running 45 pilot and 180 main... some hesitation during the roll on in high speed. Running a mooneyes air cleaner color with the "stock" paper element...Redthunder is the perfect combination of sound and performance. Ever since our inception, our R&D team have consistently engineered high quality exhaust systems for enthusiasts who want a no-nonsense exhaust system that will perform and produce a superior sound, wherever and whenever. Redthunder products are truly one-of-a-kind. Black Heat Shields for Thundercone Slip-Ons - 1353B Thunderheader. $198.10. Part #: 252132 Mfg Part #: 1353B. Add to compare. Results per Page. Viewing Results 1 - 5 of 5. Shop Thunderheader for your 2021 Harley-Davidson Softail Low Rider S - FXLRS at Dennis Kirk. The rise of the individual in this group-oriented society is drawing interest from businesses—and concern from the government. Seoul, South Korea “Drinking alone is welcome here,” ...Thunderheader Chrome Full Coverage Heat Shields - 1167. Thunderheader. Chrome Full Coverage Heat Shields - 1167. Price: $347.40 10% off! Ships Today!1166: Heat Shield Set : Fits models #1066 --$185: 1166B: Heat Shield Set : Fits models #1066B --$164: 1167: Heat Shield Set - Full Coverage : Fits models #1027, 1057, 1067Black 2 into 1 X-Series Exhaust System (w/o Saddlebag Bracket) - 1364XB Thunderheader. $1,839.00. Part #: 4410859 Mfg Part #: 1364XB. Add to compare. Results per Page. Viewing Results 1 - 26 of 26. Shop Thunderheader Exhaust Systems at Dennis Kirk. Best selection, low prices & orders over $89 ship free.Add to compare. (14) 2 into 1 High Performance Exhaust System - 1057 Thunderheader. $1,109.00. Part #: 251460 Mfg Part #: 1057. Add to compare. Results per Page. Viewing Results 1 - 40 of 52. Shop the best selection of Thunderheader Harley-Davidson products at Dennis Kirk for the lowest prices. Thunder header exhaust, , The anti-reversion design of the Thunderheader exhaust system prevents reverse flow through the system, which can negatively impact performance and throttle response. As the reverse flow enters the collector, the diffuser and pyramidal trap work together to impede the reverse flow, giving the exhaust valve ample time to close., 2-into-1 systems with patented collector design that directs spent exhaust gases in a spiral motion through four acoustical damping chambers. Exhaust travels through these chambers at high velocity to scavenge spent exhaust gases from the combustion chamber and bring in a fresh charge of air/fuel mixture. Anti-reversion design works to impede ..., Get ready to experience unparalleled performance with the Thunderheader Long Style High-Performace 2-Into-1 Exhaust System with Heat Shields . This innovative exhaust system is designed to give you maximum horsepower without sacrificing low-end torque., Products and Parts . Important Information Regarding California-Certifed Motorcycles (click here) l, First, you need to get used to the sound coming off just the right side. With the Fatcats, they have what I would describe as a "burble" on deceleration. It is tuned correctly, its just the nature of a 2:1 pipe I think. The tone of the FC to me is similiar to that of a 70's muscle car header. Deep and throaty., Increased horsepower & unmistakable THUNDERHEADER™ sound. Year. Fitment. Chrome. Black. 1993-1998. Fits models with center and forward controls. Sold Seperately - Heat Shields 1094 (top rear), 1095 (top front), & 1090 (collector) 1022., The anti-reversion design of the Thunderheader exhaust system prevents reverse flow through the system, which can negatively impact performance and throttle response. As the reverse flow enters the collector, the diffuser and pyramidal trap work together to impede the reverse flow, giving the exhaust valve ample time to close. , New NOS Thunderheader Harley Davidson Chrome thunder header exhaust pipe 120134. Brand New: Thunderheader. $875.00. $46.00 shipping. BLACK THUNDERHEADER THUNDER HEADER HEAT SHIELD COVER 1207 HARLEY 44-07263. New (Other): Thunderheader. $95.00. or Best Offer. $19.78 shipping. 14 watching., XL 883 Custom XLH 883 Hugger XL Sportster XL 1200C Custom XL 1200S Sport XL 1200 Roadster XL 1200N Nightster , Shop Thunderheader Mufflers/Slip-ons at Dennis Kirk. Best selection, low prices & orders over $89 ship free. We Ship Today! www.denniskirk.com. 800-969-7501 ... Chrome Falsee Left for 1074X 2-Into-1 Exhaust - 1075XF Thunderheader. $649.00 Part #: 4410981 Mfg Part #: 1075XF. Add to compare Add-On Falsee System for X-SERIES - 1075XFB …, The rise of the individual in this group-oriented society is drawing interest from businesses—and concern from the government. Seoul, South Korea “Drinking alone is welcome here,” ..., Experience the difference with Thunderheader Black 2-into-1 High Performance Exhaust System - 1026B that will provide an exhilarating ride, every time! Included Items: (1) Black 2-into-1 head pipe muffler assembly with non removable baffle. (1) Black steel mounting bracket. (1) 5/16 in.-18 x 1 1/2 in. hex head bolt., Thunderheader Exhaust Systems 2020 Harley-Davidson Road Glide Limited - FLTRK; Thunderheader Exhaust Systems for your 2020 Harley-Davidson Road Glide Limited - FLTRK. Filter Results. View Results Exhaust Systems Thunderheader Clear All; Ride Types Motorcycle (2) Harley ..., If you’re a motorcycle enthusiast, you understand the importance of having the right exhaust system. A high-quality exhaust not only enhances the overall performance of your bike b..., Find many great new & used options and get the best deals for THUNDERHEADER EXHAUST PIPE MUFFLER 1970-1983 HARLEY SHOVELHEAD FLH FXE BIG TWIN at the best online prices at eBay! Free shipping for many products! ... item 4 STOCK HARLEY SHOVELHEAD EXHAUST PIPES WITH MUFFLERS FOR 1971-1978 FX FXE STOCK …, The widest part of the triangle being towards the rear of the header. To increase back pressure bend the wider part of the triangle towards the outer wall of the header. Repeat this for all four sides evenly. This will increase back pressure which maybe desirable on set ups with cams with more overlap., Heat Shield Set for 2 into 1 Exhaust System 2014-2020 H-D Sportster - Forward Controls - Chrome Thunderheader. $161.60 $404.00. Thunderheader was one of the first companies in the aftermarket exhaust world for Harley's. After 30 years, there is still just one conclusion: The Thunderheader just works. , This exhaust system is specifically designed to deliver exceptional performance to your motorcycle. Featuring an innovative 2-into-1 design with a patented collector, the exhaust gases are directed in a spiral motion through four acoustical damping chambers., War Thunder is an immensely popular online multiplayer game that puts players in the cockpits of World War II-era warplanes, tanks, and ships. In addition to unlocking exclusive ve..., Add-On Falsee System for X-SERIES - 1075XFB Thunderheader. $599.00. Part #: 4410982 Mfg Part #: 1075XFB. Add to compare. Results per Page. Viewing Results 1 - 9 of 9. Shop Thunderheader Mufflers/Slip-ons at Dennis Kirk. Best selection, low prices & orders over $89 ship free. We Ship Today! , Black 2-into-1 High Performance Exhaust System - 1039B Thunderheader. $966.60. Part #: 4407264 Mfg Part #: 1039B. Results per Page. Viewing Results 1 - 2 of 2. Shop for Thunderheader Exhaust for your 2017 Harley-Davidson Low Rider S - …, Celtic Thunder, the internationally renowned Irish music group, has announced their highly anticipated tour schedule for fans worldwide. With their captivating performances and pow..., The new THUNDERHEADER X-SERIES for Touring is our large diameter exhaust specifically designed for big cubic inch engines (107" and larger), built to produce big numbers. The X-SERIES is designed with 2" primary tubes with a 14 degree transition chamber to allow more exhaust flow. Our unique patented baffle in conjunction with our trademark ... , Product Details. Fitment. Thunderheader Black 2-into-1 High Performance Exhaust System. Designed to give maximum horsepower without sacrificing low-end torque. 2-into-1 systems with patented collector design that directs spent exhaust gases in a spiral motion through four acoustical damping chambers. Exhaust travels through these chambers at ..., exact fit. (34) Chrome Thundercone Slip-On Mufflers - 1061 Thunderheader. $715.50. Part #: H25010 Mfg Part #: 1061. Results per Page. Viewing Results 1 - 5 of 5. Prev. Shop for Thunderheader Exhaust for your 2001 Harley-Davidson Road King - …, Thunder header Go to thier website, there is a cutawy drawing of the pipe in action. I have sold a couple of hundred of TH's and everyone has been real pleased with them. Like was stated above, a properly made 2 into 1 will scavenge exhaust an actually will create more torque, and TH does the best job of that., An Executive Order (EO) is the document signed by an ARB official documenting ARB approval for specified motorcycles. Any aftermarket exhaust system that replaces or otherwise impacts emission control equipment, including catalytic converters, requires an EO to be sold for use in California unless the system is for competition use only ... , SKU: TTH-1020-ATT. MPN: 1020. Thunderheader Model 1020 Exhaust for Harley-Davidson Shovelhead '70-'83. $1,080.00. Custom Made for you. Ships in 6-8 weeks. Select Color: By checking this box you agree that this item is for racing only and will not be used on public roads or land. Will not ship to California., THUNDER is a high-quality Exhaust, Manifold, Header, Muffler, Silencer, Rear Muffler, Catback, Catalytic, Turbo Manifold, Inter Pipe manufacturer from Taiwan since 1995. Thunder Exhaust System Co., Ltd. is a professional Exhaust System Manufacturer in Taiwan, providing Exhaust Muffler for Automobile and Motorcycle use. We also provide …, Brass Exhaust Tips for 1.75 inch OD pipes Lowbrow Customs. $48.39 40. Exhaust Port Gasket 1982-Up Harley-Davidson James Gaskets. $16.95 7. MCM Slash Cut Drag Pipes 2004-2013 Harley-Davidson Sportster - Black V-Factor Motorcycle Parts. $119.99. MCM Slash Cut Drag Pipes 1986-2006 Harley-Davidson Softail - Chrome V-Factor Motorcycle Parts., If you’re experiencing social exhaustion, you might feel like withdrawing completely. Here’s how recognize signs of introvert burnout and recover from it. Social exhaustion can mak..., 2 into 1 High Performance Exhaust System - 1057 Thunderheader. $1,109.00. Part #: 251460 Mfg Part #: 1057. Add to compare. Results per Page. Viewing Results 1 - 26 of 26. Shop the best selection of Thunderheader Harley-Davidson Exhaust Systems at Dennis Kirk for the lowest prices. FREE SHIPPING on orders over $89 – We Ship Today!