Thunderheader Install
Find best value and selection for your 2 into 1 Thunderheader Exhaust search on eBay. World's leading marketplace. Thunderheader install/issue Alright so, after mucho deliberation and folks weighing in on whether to bob and chop my ride or isntall a 2 into 1 I finally decided and scored a Thunderheader over the weekend. Installation was pretty simple and quick, get a buddy for a less stressful time. 100 bucks less than the black version and looks a lot better imo. Sound is awesome, low growl idle, gets mean once you hit the throttle.
SE Street Performance Slip-Ons
Rich Products Thunderheader Exhaust
Screamin Eagle Street Performance Slip-Ons
Comparison to the Reference Pipe
Test date: 1/26/2019
Test bike: 2007 XL883 Sportster, equipped with stock EFI 1200 heads, flat top 1275 kit, Jackhammer 570 Cams, Air Hammer air cleaner, and tuned with a Dynojet Powervision.
Comments:
These slip-ons are offered by HD in the Screamin Eagle catalog. Here's an excerpt from the 2019 SE catalog describing them:
We tested the chrome version, part number 80503-07. The slip-ons are stamped with the part numbers 80599-07 (front) and 80503-07 (rear), but the set sells under part number 80503-07. They are 50-state EPA compliant and are only marginally louder than the stock mufflers.
As far as the power goes, it's strong down low, but dies early and levels out above 5000rpm. Very similar to the Cone 2:1 tested below in that regard. We believe this is due to a high level of restriction that just prevents pumping more air through the pipe beyond a certain point.
If you're seeking bottom end to mid range power, and not concerned about the power above about 4400rpm, and you want a quiet exhaust, these are the slip-ons for you. If on the other hand you want top end power, avoid these.
SE 80503-07 Street Performance Slip-Ons Being Tested on the Dyno
Dell u2715h driver. 30' (75.60 cm) 2560 x 1600 at 60Hz 100% sRGB & 99% AdobeRGB (deltaE.
Thunderheader Heatshield Install
Items in search results
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Thunderheader 2 into 1 High Performance Exhaust System - 1067
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Thunderheader 2 into 1 High Performance Exhaust System - 1035
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Thunderheader 2 into 1 High Performance Exhaust System - 1031
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Thunderheader 2 into 1 High Performance Exhaust System - 1057
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Thunderheader Black 2 into 1 High Performance Exhaust System - 1035B
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black thunderheader Harley Davidson Exhaust Ghost pipe
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Thunderheader Long Style Top Rear 23 in. Heat Shield - 1094
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THUNDERHEADER HEAT SHIELD for THUNDER CONE SLIP - ON / HARLEY, CHROME QTY 1
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Thunderheader Black 20 1/2' Heat Shield for Slip-Ons & Mufflers QTY 1 P/N: 1238B
Fits Thunderheader 1060, 1061, 1051, & 1071 Systems- $99.95
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Rinehart Black Exhaust Black End Cap 2 Into 1 System Harley Dyna 2006-2017
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