Softail Models Standard, Custom, Night Train, Deuce, Springer, Heritage, Fatboy, Deluxe, Rocker and Cross Bones.
Sponsored by:
Sponsored by:

Softail exhaust

Thread Tools
 
Search this Thread
 
Old Aug 29, 2010 | 03:46 PM
  #1  
GS357's Avatar
GS357
Thread Starter
|
Advanced
Joined: Jun 2010
Posts: 63
Likes: 0
Default Softail exhaust

How much actual difference between the Fatcat system and a set of good flowing slip-on mufflers on the stock headpipes?
 
Reply
Old Aug 29, 2010 | 04:28 PM
  #2  
DeluxeBob's Avatar
DeluxeBob
Advanced
Joined: Jul 2010
Posts: 70
Likes: 0
Default

In terms of what?

Noise?

HP?

Torque?

Appearance?

Weight?
 
Reply
Old Aug 29, 2010 | 06:14 PM
  #3  
Night Stalker's Avatar
Night Stalker
Road Captain
Joined: May 2007
Posts: 695
Likes: 4
From: Clarksville, TN / Maryville, TN
Default

You forgot...

Flow?

Heat Dissipation?

Ground Clearance?

Total Length?

Amount of Phenumonoultramicroscopicsilicovolcan?
 
Reply
Old Aug 29, 2010 | 08:31 PM
  #4  
thewholehog's Avatar
thewholehog
Road Master
Joined: Nov 2009
Posts: 856
Likes: 3
Default

Big difference in my opinion..... not sure if it was a softail, but I seen a guy on this forum put in SE 204 cams with the stock headers and some slip ons and then changed the pipe to a Fat Cat and the two dyno sheets were chalk and cheese with the fat cat making a big difference to the numbers and the TQ curve especially. A good pipe is a must if you are really concerned with performance.
 
Reply
Old Aug 30, 2010 | 07:31 PM
  #5  
GS357's Avatar
GS357
Thread Starter
|
Advanced
Joined: Jun 2010
Posts: 63
Likes: 0
Default

The question was related to HP and Torque. How much and on what end of the curve or throughout? Dyno only difference or very noticable while riding?
 
Reply
Old Aug 30, 2010 | 08:34 PM
  #6  
fastboy2's Avatar
fastboy2
Cruiser
Joined: Mar 2007
Posts: 111
Likes: 0
From: Wisconsin
Default

It depends on what slip ons you use too.I had the old screamin eagle II slip-ons on my fatboy then changed to a V H Propipe and lost performance.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
porkster
Exhaust System Topics
2
Mar 10, 2020 03:15 PM
cgptv
Exhaust System Topics
2
Jul 24, 2017 01:16 PM
Keithhu
Exhaust System Topics
8
Feb 26, 2015 09:01 AM
Sharkman73
Dyna Glide Models
17
Feb 15, 2013 09:53 AM
Born2cure
Touring Models
11
Mar 29, 2012 06:52 PM




All times are GMT -5. The time now is 10:00 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE