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Chrome Thundercone Slip-On Mufflers - 1061

  • Part #:
    H25010
  • Mfg Part #:
    1061
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Chrome Thundercone Slip-On Mufflers - 1061

  • Part #:
    H25010
  • Mfg Part #:
    1061
MSRP: $657.00

Price: $591.30 10% off!
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Thunderheader Chrome Thundercone Slip-On Mufflers - 1061
  • Designed to give maximum horsepower without sacrificing low-end torque
  • Anti-reversion design works to impede reverse flow through the system -- reverse flow can contaminate the incoming fuel/air mixture, which reduces performance and throttle response
  • As reverse flow enters the collector, the diffuser deflects it through vents; the pyramidal trap and apertures impede the reverse flow, allowing time for the exhaust valve to close
  • Flow director has equal area at each end, allowing exhaust gases to travel at a constant velocity over the entire length to improve exhaust scavenging
  • For Heat Shields order H25-036


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

Not all products are legal for sale or use on pollution controlled vehicles. Check your local laws and the manufacturers information

There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Discoloration (bluing) is the result of tuning characteristics, cam timing, carburetor jetting, overheating, etc., and is not caused by defective manufacturing. See the CHEMS/LUBES section for products that will help prevent or remove bluing.

Installation of a new exhaust system may change your motorcycles fuel-air mixture requirements. Please consult the exhaust manufacturer directly with questions regarding any modifications that may need to be made during, or after, installing their product. If a jet kit or fuel processor is recommended, see the FUEL/INTAKE section



The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.

Specifications
Part #: H25010
Mfg #: 1061
Color - Primary Chrome
Finish Chrome
Style Tapered Tip
Type Slip-On/Muffler
Units Pair
Weight 6.31 lbs
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Resources & Manuals
Fitment for Thunderheader Chrome Thundercone Slip-On Mufflers - 1061

Part H25010 fits the following machines

Harley-Davidson
  • Electra Glide Classic - FLHTC 1995-2005, 2009-2013
  • Electra Glide Classic (EFI) - FLHTC 2007-2008
  • Electra Glide Classic Injected - FLHTC I 1996-2006
  • Electra Glide Injected CVO/SE - FLHTCSE 2004
  • Electra Glide Injected CVO/SE - FLHTCSE 2 2005
  • Electra Glide Police - FLHTP 2014-2016
  • Electra Glide Standard - FLHT 1995-2006, 2009
  • Electra Glide Standard (EFI) - FLHT 2007-2008
  • Electra Glide Standard Injected - FLHT I 2003-2006
  • Electra Glide Ultra Classic - FLHTCU 1995-1999, 2009-2016
  • Electra Glide Ultra Classic (EFI) - FLHTCU 2007-2008
  • Electra Glide Ultra Classic CVO/SE - FLHTCUSE 4 2009
  • Electra Glide Ultra Classic CVO/SE - FLHTCUSE 5 2010
  • Electra Glide Ultra Classic CVO/SE - FLHTCUSE 6 2011
  • Electra Glide Ultra Classic CVO/SE - FLHTCUSE 7 2012
  • Electra Glide Ultra Classic CVO/SE - FLHTCUSE 8 2013
  • Electra Glide Ultra Classic CVO/SE (EFI) - FLHTCUSE 2 2007
  • Electra Glide Ultra Classic CVO/SE (EFI) - FLHTCUSE 3 2008
  • Electra Glide Ultra Classic Injected - FLHTCU I 1995-2006
  • Electra Glide Ultra Classic Low - FLHTCUL 2015-2016
  • Electra Glide Ultra Limited - FLHTK 2010-2016
  • Electra Glide Ultra Limited CVO/SE - FLHTKSE 2014-2016
  • Electra Glide Ultra Limited Low - FLHTKL 2015-2016
  • Road Glide - FLTR 1998-2002, 2009
  • Road Glide - FLTRX 2015-2016
  • Road Glide (EFI) - FLTR 2007-2008
  • Road Glide Custom - FLTRX 2011-2013
  • Road Glide Custom CVO/SE - FLTRXSE 2012
  • Road Glide Custom CVO/SE - FLTRXSE 2 2013
  • Road Glide CVO/SE - FLTRSE 3 2009
  • Road Glide Injected - FLTR I 1998-2006
  • Road Glide Injected CVO/SE - FLTRSE I 2000
  • Road Glide Injected CVO/SE - FLTRSE I 2 2001
  • Road Glide Special - FLTRXS 2015-2016
  • Road Glide Ultra - FLTRU 2011-2013, 2016
  • Road Glide Ultra CVO/SE - FLTRUSE 2011, 2015-2016
  • Road King - FLHR 1995-2006, 2009-2016
  • Road King (EFI) - FLHR 2007-2008
  • Road King Classic - FLHRC 2009-2013
  • Road King Classic (EFI) - FLHRC 2007-2008
  • Road King Classic Injected - FLHRC I 1998-2006
  • Road King Custom - FLHRS 2004-2006
  • Road King Custom (EFI) - FLHRS 2007
  • Road King Custom Injected - FLHRS I 2004-2006
  • Road King CVO/SE - FLHRSE 2014
  • Road King CVO/SE - FLHRSE 5 2013
  • Road King CVO/SE (EFI) - FLHRSE 3 2007
  • Road King CVO/SE (EFI) - FLHRSE 4 2008
  • Road King Injected - FLHR I 1996-2006
  • Road King Injected CVO/SE - FLHRSE I 2002
  • Road King Injected CVO/SE - FLHRSE I 2 2003
  • Street Glide - FLHX 2006, 2009, 2011-2016
  • Street Glide (EFI) - FLHX 2007-2008
  • Street Glide CVO/SE - FLHXSE 2010, 2015-2016
  • Street Glide CVO/SE - FLHXSE 2 2011
  • Street Glide CVO/SE - FLHXSE 3 2012
  • Street Glide Injected - FLHX I 2006
  • Street Glide Special - FLHXS 2014-2016
  • Street Glide Trike - FLHXXX 2010-2011
  • Tour Glide Ultra Classic - FLTCU 1995
  • Tour Glide Ultra Classic Injected - FLTCU I 1996
  • Tri Glide Ultra Classic - FLHTCUTG 2009-2016
Reviews & Questions
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 15 questions Browse 15 questions and 25 answers
Are these more louder and better performance than the thunder header 2 into 1 ?
A shopper on Aug 21, 2016
BEST ANSWER: Not as loud, but my motor is stock and I have kats still, check out YouTube, there's a ton of sound videos you can compare.
Do you need to tune bike for slip one?
A shopper on Apr 4, 2018
BEST ANSWER: What year is the bike? The Rushmore models '14 and up no but the prior years yes
What size muffler fits the 1999 harley-davidson electra glide standard?
A shopper on Mar 29, 2017
BEST ANSWER: I'm pretty sure there the same diameter pipe for those years on this kit, check your local Harley dealer, there well worth the money, and really nice quality product, and sound awesome!
will these fit the cobra power port duel exhaust?
A shopper on Dec 9, 2019
BEST ANSWER: Yes they should
Will these mufflers work on my 2019 road glide?
Edward S on Jul 5, 2019
BEST ANSWER: No, see fitment tab for correct fits
Are they available in California ?
A shopper on Mar 20, 2019
BEST ANSWER: The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.
How do the thunderheader compare to the screaming eagle. Performance and design engineering I like how the thunderheader works to control the exhaust valve are the screaming eagle in the same engineering performance?
A shopper on Mar 9, 2019
BEST ANSWER: Don't know
2012 streetglide, does it require download or tuning?
A shopper on Aug 6, 2018
BEST ANSWER: Mine is a 2015 Ultra. I installed Rineharts first and got download. Shop did download for Thunderheaders. With the response difference, I'd do the download.
Does Dennis Kirk notify ordering customers that all off these they have in stock have blemished chrome? I ordered some and was sent bad ones and was told all of them they had were also no good.
William W on Jul 17, 2018
BEST ANSWER: Never heard of this
What is the inlet die. size ? My vance hines headers are 1 3/4
Nazzz on Jul 14, 2018
BEST ANSWER: 1 3/4"
What is the inlet size? I wanna put a set on my 1980 flt with true dual headers
A shopper on May 6, 2018
BEST ANSWER: I'm not too sure, but I think they're pretty much standard.
thunder header from 04 elec glide fit 08 street glide slip ons ?
Ron G on Jan 21, 2018
BEST ANSWER: Yes
Will they fit in place of dual Rinehart mufflers on 2005 electra?
A shopper on Nov 8, 2017
BEST ANSWER: Yes!!!!!!
Does it come in black?
A shopper on Oct 5, 2017
BEST ANSWER: No
Are you ever gonna have any more than 1 in stock at a time?
A shopper on Aug 19, 2017
BEST ANSWER: no idea
4.9 / 5.0
27 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
25
2
0
0
0
Finish
4.6 / 5
Fit
4.8 / 5
Performance
4.9 / 5
Styling
4.8 / 5
Value
4.5 / 5
Loudness
Very Quiet
Average
Very Loud
Would you recommend this product?
Yes (17)
Finish
4 / 5
Performance
5 / 5
THUNDERHEADER DUAL SLIP ON MUFFLERS
EASY TO INSTALL LOOK AND SOUND GREAT WITH THE TRUE DUAL HEAD PIPES I INSTALED FROM VANCE &HINES THEY PERFORM GREAT IF YOU LIKE LOUD EXHAUST THIS IS THE WAY TO GO.
October 14, 2009
FREMONT, CA
Finish
3 / 5
Performance
5 / 5
2009 FLTR
I just put the Thunderheader Late Dual-Style Slip-On Mufflers, # H25010 on my 2009 Road Glide and I am vary happy with them, the deep roar during acceleration will set off car alarms but i had no trouble hearing my radio when cruising.
The instructions say you may need to rejet to maintain low end torque, but I felt a increase in low end torque and a overall increase in power,
May 23, 2010
Finish
4 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
5 / 5
nice sounding/performing pipes
I have always like the sound of the thunderheader exhaust system and when I purchased a road glide I knew exactly which slip on pipes I wanted. These pipes really sound nice with a deep rumble. They aren't obnoxiously loud when traveling at slow speeds through town which is also good for keeping you off the police radar. Performance wise they seem to work just as well as the screamin eagle slip ons that I previously had.
August 10, 2010
St. Paul, MN
Finish
5 / 5
Performance
5 / 5
Boom!
I recently purchased my used '07 FLRT and it still had the stock exhaust. This was not going to work. After researching my options for basically wanting a louder sound, I went with the Thundercone slip ons. PERFECT! They were easy to install and completely changed my bike for the better. Now I am the one who gets noticed.
Only a couple small issues that were quickly corrected by me. While I was shipped new bolts and washers, not nuts came with the shipment. My oem mufflers had them welded on them. Not the Thunderheaders. A quick trip to the hardware store for locking nuts remedied this. Also, nothing related to DK, but I needed to go with new exhaust clamps. I tried to use the old ones, but it would have been better to just change them from the start.
Overall, I love them. They give me the sound I wanted and actually perform well with the stock headers. The price and free and fast shipping from DK made this purchase a good one and created a DK customer for the future.
July 6, 2015
Finish
5 / 5
Fit
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
5 / 5
Styling
5 / 5
Value
4 / 5
Would you recommend this product?
Yes
Had them on other bikes . Always awesome sound and performance
October 24, 2017
Purchased
over 2 years ago
Finish
5 / 5
Performance
5 / 5
Great Mufflers
I have had several of the Thunderheader's, they have all been great and are easy to install. The sound is just right for me, fairly quiet when at idle and just loud enough when you get down on it...
November 22, 2011
Thunder cones
Very deep rumble. Sounds mean. I put them on my 2013 Road Glide, I love them. If your in the market for slip ons and you want deep and loud, thunderheader thundercones are a must!
January 12, 2016
Finish
5 / 5
Fit
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
5 / 5
Styling
5 / 5
Value
5 / 5
Would you recommend this product?
Yes
Great performance and sound.
Changed out Rineharts fot the Thunderheaders. First test is at 2018 Sturgis Rally. Sound is awesome, but performance is phenomenal. Low RPM power much better than the Rineharts. Pulled hills like a train. Love them!
August 4, 2018
Myrtle Beach , SC
Purchased
1 year ago
Finish
5 / 5
Fit
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
5 / 5
Styling
5 / 5
Value
5 / 5
Would you recommend this product?
Yes
great looks, chrome is solid, loud sound good performance always liked thunderheaders had them on 3 bikes have used cfrs Rinehart d&d thuderheaders are the best in my opinion thanks
June 23, 2017
Purchased
over 2 years ago
Finish
4 / 5
Performance
5 / 5
nice fit easy install
The parts arrived on time and well packed.Installation was a breeze.The look and sound are great ,great american made product.
April 7, 2016