Thunder header slip ons

Loafers & Slip-Ons. Page Navigation. Size. 5 & smaller 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 16. Color. Black Grey White Ivory Beige Brown Metallic Blue Blue/Green Green Yellow Orange Red Burgundy. Brand. Find a brand.

Thunderheader full exhaust, 95 inch Stage 2 big bore kit (flat top pistons), Stage 1 ECU, Screamin Eagle 203 Cams and Screamin Eagle air filter ... Hooker slip-ons (Left set to Torque, right set to HP), Stage 1 ECU, 95" piston kit (10.5:1), Branch heads, TC55 cams and Screamin eagle air filterRe: Thunderheader Slip ons « Reply #1 on: January 14, 2005, 12:23:18 PM » I was told by my local dyno gut, who I trust, to stay away from the Thunder Header Slip ons. Part #: 4412679 Mfg Part #: 27323. exact fit. Black 2-into-1 Upsweep Exhaust System - 47323 Vance & Hines. $1,449.99. Part #: 4412680 Mfg Part #: 47323. Results per Page. Viewing Results 1 - 40 of 115. Prev Next. Shop for 2022 Harley-Davidson Softail Low Rider S - FXLRS Exhaust at Dennis Kirk.1075XFB (Add on Falsee System in Black) - $758. Our X-SERIES™ Exhaust is our newest line in creating maximum horsepower. With our 2" headpipe, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson's Milwaukee-Eight™ engine. Comes complete with full coverage heat shields, 18mm and 12mm O2 sensor ports.Slip-On – No. The Thunderheader is really incredible. These pipes are very loud with the low notes that many folks are looking for. Because these are a 2-1 design, you may see up to a 20 hp increase in performance. That makes them extremely hard to pass up, especially with a lower price point than many other brands. ... Their slip-ons give ...Find great deals on eBay for thunderheader slip on. Shop with confidence. Skip to main content. Shop by category. Shop by category ... Cobra Muffler Exhaust Slip-ons for Harley Davidson Touring M8 Models 2017 and Up. Opens in a new window or tab. Pre-Owned. C $324.60. Top Rated Seller Top Rated Seller. or Best Offer

by [deleted] Fellas please help me! My Harley's Thunderheader is way too loud!! My bike is a 1998 Fatboy. I've been riding for the past year with a 2-1 Thunderheader. In the past four months it has left me with a ringing in my ears. I ride with a full face helmet and ear plugs with a rating of 32 NPR, every time.Thunderheader for Harley-Davidson. Shop the best selection of Thunderheader Harley-Davidson products at Dennis Kirk for the lowest prices. FREE SHIPPING on orders over $89 – We Ship Today!Wishlist/Gift Registry. My Garage. How to/Buying Guides. Dennis Kirk, Inc.955 South Frandsen AveRush City, MN 55069 800-969-7501 800-969-7501 [email protected] We want to hear from you! Tell us what we can do better! Leave us your feedback!I know a guy that had the Thunderheader dual slip ons on a true dual system and a similar bike with the 2:1 Thunderheader. It was no contest between the two. The Thunderheader does not work all that well in true dual slip on. Just one example though.:thumbsup:2017-2023 Harley Touring M8 Billet Cat 2:1 Exhaust. 5.00. $1,199.00. Add to Cart. Show: Experience the increase in performance and sound from a high performance D&D Exhaust system designed for Harley motorbikes. All testing is done in-house with Harley Tuners. 2013 street glide. Thunderheader slipons. Decatted head pipe

Thunderheader for Harley-Davidson. Shop the best selection of Thunderheader Harley-Davidson products at Dennis Kirk for the lowest prices. FREE SHIPPING on orders over $89 – We Ship Today!Increased horsepower & unmistakable THUNDERHEADER™ sound. Year. Fitment. Chrome. Black. 1995-2014 : ThunderCones™ FLH slip-on's late style (pair) Heat Shields …Newsletter Sign up. Contact Us. Phone: (510) 234-7547 (Dealers Only) Fax: (510) 234-1690 (Dealers Only) To apply for a dealership, go to our Dealers page. thunderheader slip on for sale | eBay Category Parts & Accessories Exhaust & Emission Systems Silencers, Mufflers & Baffles Heat Shields & Wraps Books & Magazines Color …NOW AVAILABLE: 2017-2022 Harley-Davidson M8 FLH Models 2-into-1 X-Series™ Exhaust & ThunderCone™ Slip-Ons 2018-2022 Harley-Davidson M8 Softail ThunderCone™ Slip-Ons 2018-2022 Harley-Davidson M8 Softail X-Series™ 2-into-1 Exhaust FOLLOW US: FIND A DEALER NEAR YOU! All THUNDERHEADER™ Exhaust Systems are legal for CLOSED-COURSE COMPETITION use only.

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Quick update video on my Street Bob 114 now with the Vance and Hines Twin Slash slip ons. Upgrade your ride with the Chrome Thundercone Slip-On Mufflers and experience the perfect fusion of power and style. Unleash the true potential of your machine while turning heads wherever you go. Included Items: (2) Exhaust mufflers. (4) 5/16-24 x 3/4 in. Bolts. (8) 5/16 in. Plain washers. (4) 5/16-24 Locknuts.I know a guy that had the Thunderheader dual slip ons on a true dual system and a similar bike with the 2:1 Thunderheader. It was no contest between the two. The Thunderheader does not work all that well in true dual slip on. Just one example though.:thumbsup:Mufflers/Slip-ons Thunderheader Clear All; Viewing Results 1 - 2 of 2 exact fit Chrome Thundercone Slip-On Mufflers - 1352 Thunderheader. $794.70 Part #: 4410258 Mfg Part #: 1352. exact fit (1) Black Thundercone Slip-On Mufflers - 1352B Thunderheader. $794.70 Part #: 4410259 Mfg ...flhtk Discussion starter · Jan 28, 2011. 107.99 hp 119.08 tq std. 104.77hp 115.92tq 103, high comp pistons, ported heads. seprt,259e cams, stock header catless, rush slip ons with split baffles 1.75 left 2.00 right.supertuned by strokerjkl. maybe he can post my dynio sheets for everyone, I cant get them attached. 1.

I know a guy that had the Thunderheader dual slip ons on a true dual system and a similar bike with the 2:1 Thunderheader. It was no contest between the two. The Thunderheader does not work all that well in true dual slip on. Just one example though.:thumbsup:Thunderheader for Harley-Davidson. Shop the best selection of Thunderheader Harley-Davidson products at Dennis Kirk for the lowest prices. FREE SHIPPING on orders over $89 – We Ship Today!Year: 2010 Family: 103" TOURING MODELS SE/AC, Rush Slip-ons 2.5" Baffles, Performance, 87-89 Octane Updated : Oct 11, 2023 Oct 11, 2023I know a guy that had the Thunderheader dual slip ons on a true dual system and a similar bike with the 2:1 Thunderheader. It was no contest between the two. The Thunderheader does not work all that well in true dual slip on. Just one example though.:thumbsup:Slip-Ons +15. Full Systems +4. Air Cleaners. Baffles. Get 10% Off Your First Order. Sign up for emails and never miss out on sales, new products, and more. Not valid for Carbon Fiber. Email address. Contact. 40 Cane Creek Industrial Park RD Fletcher, NC 28732 [email protected] (877) 264-8282. Resources.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Slip on muffler for 1995-2014. Uses stock head pipe and replaces mufflers only. Increased horsepower & unmistakable THUNDERHEADER™ sound. Year. Fitment. Chrome. Black. 1995-2014. ThunderCones™ FLH slip-on's late style (pair) EMISSIONS NOTICE TO CUSTOMERS IN CALIFORNIA . The California Air Resources Board (ARB) prohibits the sale and use of emissions-related aftermarket parts for motorcycles unless the part is either (1) a "replacement part," (2)Shop the best selection of Thunderheader exhaust systems at Dennis Kirk for the lowest guaranteed prices. Same Day Shipping! Thunderheader slip-ons? Jump to Latest Follow 2818 Views 3 Replies 4 Participants Last post by panamablue, Mar 12, 2011. B. ben medley Discussion starter ...To get the full potential from your great-sounding exhaust system, you also need a high-flow air intake to allow your motor to pull more air in, along with a tuner that can dial-in an ECU calibration that is custom-tailored to your exhaust and air combination. With Vance & Hines, we’ve got you covered.

Commonly Recognized As The BEST Sounding Exhaust For Harley-Davidson. Proven & Noticeable Performance Gains. Available In Black or Chrome. INCLUDES Heat Shields. Full-Length Right Side 2:1. Slip-Ons & False Dual System Available. Classic / Performance Look. 100% MADE IN THE USA.

American Custom. $13.99. Excite your Senses...not your wallet! Our Bomber Slip-ons and Header Pipe fit Indian Touring bikes. They provide a robust thunderous growl for your Challenger, Chief, Chieftain, Roadmaster, Springfield and other Thunder Stroke 111 and PowerPlus Touring Bikes. The products can be ordered either pre-made or made from yo.Available in chrome and satin black. Large, rounded mufflers. Modern slash-cut design. Highest bump in power of any Harley slip-on. Slightly better low-end torque. Smoother throttle response. Loudest slip-on for Harleys. Deeper sound at idle and on the road. dB killer can be removed for even more power and volume.Thunderheader full exhaust, 95 inch Stage 2 big bore kit (flat top pistons), Stage 1 ECU, Screamin Eagle 203 Cams and Screamin Eagle air filter ... Hooker slip-ons (right side set for horsepower / left side set for torque), Stage 1 ECM and Screamin Eagle air filter Updated :Oct 11, 2023: Oct 11, 2023 ...Commonly Recognized As The BEST Sounding Exhaust For Harley-Davidson. Proven & Noticeable Performance Gains. Available In Black or Chrome. INCLUDES Heat Shields. Full-Length Right Side 2:1. Slip-Ons & False Dual System Available. Classic / Performance Look. 100% MADE IN THE USA.Forty years and 250,000 pipes later, D&D Exhaust exhaust systems are some of the leading performance motorcycle exhaust systems in the world. Built by reputation of excellent customer service, quality in every detail of the product, and the basic value of a system that performs as specified. But, it takes more than honesty, integrity, and ...Before and after Jackpot 2-1-2 header and CFR Slip-ons vs Thunderheader Slip-onsDynovision tuner and Fuelmoto IntakeDeneFXDWG puts in his vote for Rhineharts, for a number of reasons. “I only have 500 miles on my new M8, but I chose the 4″ Rineharts for their looks and sound quality. After reading a few threads on the Cannons, I hope I chose wisely as a few have said the M8s are exhaust sensitive. I’m all about torque and hope the huge 2 1/2″ baffles ...There is no way to adjust this so I ended up chucking these and getting Thunderheader slip ons. One person found this helpful. Helpful. Report. Damn Sam. 5.0 out of 5 stars 06 Ultra Classic. Reviewed in the United States on October 2, 2016. Verified Purchase. Easy installation and makes a huge difference. ...Mufflers/Slip-ons Thunderheader Clear All; Viewing Results 1 - 2 of 2 exact fit Chrome Thundercone Slip-On Mufflers - 1352 Thunderheader . $794.70 Part ... 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!

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Due to extreme demand and supply chain delays, out of stock Thunderheader items may take 1-6+ months to ship. Place your order now to get in line. Orders are shipped based on the day they were ordered.07-11 Harley Davidson Electra Glide Thunderheader Chrome Slip On Exhaust Muffler. ... New NOS Thunderheader Harley Davidson Chrome thunder header exhaust pipe 120134. Thunderheader Chrome Thundercone Slip-On Mufflers - 1066. Increased horsepower, torque and unmistakable Thunderheader sound. A patented collector is used instead of a conventional baffle in the muffler. The Collector is designed to direct spent gases through four acoustical dampening chambers. The flow director serves a multi-task function ...Aug 18, 2017 · Neighbor Hater Mufflers by Cobra are not for the faint of heart. These are an aggressive slip-on muffler, for those who think loud just isn't good enough. Each muffler starts as a round 3-inch or 4-inch tube, that bells out to 3.5 inches or 4.5-inches, respectively. It presents an aggressive and classic design at the rear. Thunder Header 2 into 1 Exhaust for Harleys. https://www.accessoryinternational.com/category/thunderheader-exhausts.htmlOur review covers the exhaust styling...Looking for a great sounding pair of slip-ons mufflers look no further. These Thunderheader slip-ons sound awesome! Kept stock headpipes, add K&N HD-1717 air filter kept stock airbox, V&H FP3 tuner and you will have "the sound" with a little more performance. Very happy with this setup on my Harley M8 107.Slimline Duals® for select 2009-Later Harley-Davidson Touring models. Header configuration keeps heat away from rider and passenger legs, providing a more comfortable ride. Laser cut heat shields come pre-installed to save you time and labor. Features 12mm & 18mm O2 ports, with optimum placement for dyno tuning and proper measurement of the ...This is an Exhaust SOUND Comparison video only, between the Thunderheader, Vance & Hines Pro Pipe, and the Bassani Road Rage. all 3 bikes are 2013 Dynas with...Thunderheader Black Heat Shields for Thundercone Slip-Ons - 1353B. Brand New. $211.50. shopdenniskirk (92,716) 99.3%. Buy It Now. Free shipping. Sponsored. Results matching fewer words. Harley-Davidson Mufflers/Slip-ons SKU: 4410260 View Customer Photos Thunderheader Chrome Thundercone Slip-On Mufflers - 1066 Part #: 4410260 Mfg Part #: 1066 Add'l OEM/Ref Numbers 6 Reviews | 13 Questions MSRP: $795.00 Price: $715.50 10% off! Make sure this fits your ride Select a Ride Quantity: Ships Free In Stock - 6 on Hand Add to CartNewsletter Sign up. Contact Us. Phone: (510) 234-7547 (Dealers Only) Fax: (510) 234-1690 (Dealers Only) To apply for a dealership, go to our Dealers page.Nov 29, 2018 · DeneFXDWG puts in his vote for Rhineharts, for a number of reasons. “I only have 500 miles on my new M8, but I chose the 4″ Rineharts for their looks and sound quality. After reading a few threads on the Cannons, I hope I chose wisely as a few have said the M8s are exhaust sensitive. I’m all about torque and hope the huge 2 1/2″ baffles ... ….

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. Between the unmistakable Thunderheader sound to its seat of the pants, dyno-proven performance gains, and its iconic look ...Newsletter Sign up. Contact Us. Phone: (510) 234-7547 (Dealers Only) Fax: (510) 234-1690 (Dealers Only) To apply for a dealership, go to our Dealers page.D&d fat cat vs thunderheader. Cant make up my mind between the two. motor is probably going to stay stock maybe some cams in the future. Running the powerduals now and they work well but tired of dragging them in the turns. Loud and performance is my priority. 2016 Road Glide Charcoal Pearl. 6.5 stereo installed.Shop the best selection of Thunderheader exhaust systems at Dennis Kirk for the lowest guaranteed prices. Same Day Shipping! * EXHAUST: Stock with crossover and SE II Slip-Ons * IGNITION: Stock * COILS: Stock. rfranz1952. 18th June 2007, 02:42. ... 2006 H-D 1200R, Ramflo 400 A/C, Thunderheader 2-1 exhaust, Twintec TC-88a ign. module, nology plug wires, 180 main jet, 48 slow jet, 1 shim under stock needle, two turns out on mixture screw. Breathers vented …NOW AVAILABLE: 2017-2022 Harley-Davidson M8 FLH Models 2-into-1 X-Series™ Exhaust & ThunderCone™ Slip-Ons 2018-2022 Harley-Davidson M8 Softail ThunderCone™ Slip-Ons 2018-2022 Harley-Davidson M8 Softail X-Series™ 2-into-1 Exhaust FOLLOW US: FIND A DEALER NEAR YOU! All THUNDERHEADER™ Exhaust Systems are legal for CLOSED-COURSE COMPETITION use only. INDIAN CHIEF / SUPER CHIEF LIMITED 4.5" 2-INTO-1 SHORTY 2021-PRESENT (SPECIAL ORDER) $1,199.99. Freedom Exhaust Online Store.Find great deals on eBay for thunderheader slip ons. Shop with confidence. Skip to main content. Shop by category. Shop by category. Enter your search keyword ... 3.0'' Slip ons for Indian Scout Exhaust, Ear&Eye-catching in the Tone & Looking. Opens in a new window or tab. Brand New. C $242.91. Thunder header slip ons, 2017 FLTR 107 Wood WM8-22x Thunderheader 2/1 2017 FLHTK 107″ WM8-22X Jackpot 2/1/2 17 FLHX 107″ WM8-22x S&S head pipe Jackpot mufflers ... 2017 M8 CVO 114″ Stock HP JP Slip Ons 2017 M8 CVO 114″ Completely Stock 2017 M8 SE Stage III 114″ WM8-222 JP 2/1/2 S&S Mk45 2018 Softail 114″ M8, Dynojet Power Vision, FM Improved Stock …, Thunderheader Chrome Thundercone Slip-On Mufflers - 1352. For OEM right-hand side 2-into-2 dual exhaust system headpipes. Increased horsepower, torque and unmistakable Thunderheader sound. A patented collector is used instead of a conventional baffle in the muffler. The Collector is designed to direct spent gases through four acoustical ... , I picked up set of thunder header slip ons to replace may wild pig slip ons (2" baffles). My bike 05 FLHT SE filter and SERT. I've been reading that the T-header slip ons are tough to get tuned in. I"m running a great map that i got form MegaGlide. and the bike runs good. those T-header slipons are WAY loud!, 07-11 Harley Davidson Electra Glide Thunderheader Chrome Slip On Exhaust Muffler. ... New NOS Thunderheader Harley Davidson Chrome thunder header exhaust pipe 120134., Buy Them Here: https://www.westendmotorsports.com/rinehart-4-5-inch-dbx45-slip-on-mufflers-for-17-up-harley-davidson-touring-models-choose-finish/Check out t..., Overview of Thunderheader Black Thundercone Slip-On Mufflers - 1066B Experience a powerful combination of increased horsepower, torque, and the unmistakable …, Thunderheader full exhaust, 95 inch Stage 2 big bore kit (flat top pistons), Stage 1 ECU, Screamin Eagle 203 Cams and Screamin Eagle air filter ... Hooker slip-ons (Left set to Torque, right set to HP), Stage 1 ECU, 95" piston kit (10.5:1), Branch heads, TC55 cams and Screamin eagle air filter, SHARKROAD 3.5" Slip On Mufflers Exhaust for 18- 23 Softail M8 Premium Black (Fits: Harley-Davidson Street Bob) $229.99. Was: $249.99. Free shipping. or Best Offer. 43 sold. Exhaust System pipes 2 into 1 fits Harley-Davidson Dyna 1998-2017 Street Bob. $480.00. $100.00 shipping. Only 1 left!, Get the best deals for thunderheader slip ons at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!, Apr 15, 2016 · If you are only getting slip-ons, this would literally be your last step. Two bolts and a hose clamp is all you need to worry about. Remove the mounting bolts that hold the end of the muffler to the saddlebag supports. Loosen the hose clamp at the front end of the slip-on muffler section that secures it to the main pipe. Set current mufflers aside. , Thunderheader 2 into 1 Black Harley Davidson Softail EVO. Pre-Owned: Thunderheader. $699.99. $75.99 shipping. ... New Listing Harley Ultra Classic FLHTCUI 2006 Exhaust Muffler Slip ons. Pre-Owned: Harley-Davidson (2) 2 product ratings - Harley Ultra Classic FLHTCUI 2006 Exhaust Muffler Slip ons. $39.96., Before and after Jackpot 2-1-2 header and CFR Slip-ons vs Thunderheader Slip-onsDynovision tuner and Fuelmoto Intake, Welcome to Big City Thunder! - Don't be baffled about sound and power, Big City Thunder delivers both!! - If you are looking for a more aggressive, throaty sound we can help, with our Original Thunder Monster baffles. - If you are trying to tone things down, but not kill the sound we have you covered with our Quiet Thunder Monster baffles., Home / Samson – Stronger Than Ever / Slip-Ons / Touring Mufflers Touring Mufflers. Showing 1–12 of 17 results. Sale! Silver Bullet 4″ x 30″ Mufflers for Stock M8 2017-Current $ 475.95 – $ 525.95; Samson Cholo …, Thunder header slip ons. M8. Great condition..., Not finding what you're looking for? Save thunder header slip on to get e-mail alerts and updates on your eBay Feed., Thunderheader Chrome Slip on Exhaust Pipe Mufflers Pair Harley Touring 2017-2020 5.0 3 product ratings shopdenniskirk (93838) 99.1% positive feedback Price: $715.50 Free shipping Est. delivery Wed, Sep 13 - Fri, Sep 15 Returns: 60 days returns. Buyer pays for return shipping. Condition: New, Shop the best selection of Thunderheader Harley-Davidson products at Dennis Kirk for the lowest prices. FREE SHIPPING on orders over $89 - We Ship Today! ... Mufflers/Slip-ons (9) Brands Enter Brands. Thunderheader (53) Price Range $ Minimum ... Chrome Thundercone Slip-On Muffler - 1069 Thunderheader. $408.60 Part #: 4407694 Mfg Part #: ..., Overview of Thunderheader Black Thundercone Slip-On Mufflers - 1066B Experience a powerful combination of increased horsepower, torque, and the unmistakable Thunderheader sound with the Thundercone Slip-On Mufflers. ... Best sounding slip ons I've ever gotten and I usually do full system but I'm so happy with just the slip ons., Thunder Header was originally made as a racing pipe. the sound is straight Harley Style and it is the most used exhaust on an H-D. Performance wise you get H-P And torque downside is that they do turnm blue quick but that can be due to your bike running to lean, i like the black pipe and it won't turn color as quick. overall i would use a TH Over …, Jun 21, 2006 · You can order the parts seperately as in 1 Thunderheader slip on and 1 Falsee but you would get better performance by ordering the full 2-1 with falsee left side. Chuck Soday. GO FAST. '03 FXSTBI 103" Stroker. 112 hp -- 121 tq. 100% S.E. My V Twin Gallery. , Oct 8, 2023 · Thunderheader black harley. Complete exhaust system black. Of the brand thunderheader | Especially: davidson, softail | Usahobbynfun offers for sale in Usa ¬. Lincoln. eBay. Price: 700 $. Product condition: Used. See details. Check out these interesting ads related to "thunderheader". , Thunderheader Slip-Ons for a Harley Touring Bike. '16 H-D Road Glide SpecialStock intakeStock HeadersSound clip taken from the "cockpit" area. SPOILER: There..., Jul 11, 2006 · I know a guy that had the Thunderheader dual slip ons on a true dual system and a similar bike with the 2:1 Thunderheader. It was no contest between the two. The Thunderheader does not work all that well in true dual slip on. Just one example though.:thumbsup: , Buy Them Here: https://www.westendmotorsports.com/rinehart-4-5-inch-dbx45-slip-on-mufflers-for-17-up-harley-davidson-touring-models-choose-finish/Check out t..., Thunderheader Racing Products. February 19, 2017 ·. Our ThunderCone™ Slip-Ons are available now for 2017 Touring models. Available in Chrome or Black. Contact your nearest dealer. In stock! #thunderheader #harley #flh #milwaukeeeight #slipons #exhaust #harleydavidson #., This is my 19 LowriderStage 4 kit(Harley)508 Fueling Cam S&S pump and cam plateThunder Header, Thunderheader 2 into 1 Black Harley Davidson Softail EVO. Pre-Owned: Thunderheader. $699.99. $75.99 shipping. ... New Listing Harley Ultra Classic FLHTCUI 2006 Exhaust Muffler Slip ons. Pre-Owned: Harley-Davidson (2) 2 product ratings - Harley Ultra Classic FLHTCUI 2006 Exhaust Muffler Slip ons. $39.96., Slip on muffler for 1995-2014. Uses stock head pipe and replaces mufflers only. Increased horsepower & unmistakable THUNDERHEADER™ sound. Year. Fitment. Chrome. Black. 1995-2014. ThunderCones™ FLH slip-on's late style (pair) , TRUE DUAL THUNDER™, with Cross-Under™ design. Complete with HEAT SHIELDS. X-SERIES™ Complete with HEAT SHIELDS. Add-On Falsee System for X-SERIES™ - Includes Heat Shields (1065XF FOR 2009-2016) ThunderCone™ FLH Slip-On's (pair). Heat Shields Sold seperately. X-SERIES™ Complete with HEAT SHIELDS. , 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! , Next was a stock setup, with crossover, and Screamin' Eagle slip-ons, which I thought helped the bike run pretty good. Just for the heck of it, I swapped on the stock mufflers, but with the centers punched through with a 5/8" rod for a little sound. These actually felt like they made the bike run the best overall., I was told by my local dyno gut, who I trust, to stay away from the Thunder Header Slip ons. If you like the sound and looks of the thunder header its best to go with the complete pipe and the false left side if you desire to have both pipes. That pipe works very well and has great sound. As far as the sound my friend has the slip ons on a 02 ...