Exhaust System Topics New and old exhaust system discussions. Fitment issues to sound bites and suggestions. Post them here.

D&D fat cat vs python rayzer

Old Oct 26, 2016 | 10:52 PM
  #1  
ARBOC's Avatar
ARBOC
Thread Starter
|
Cruiser
Joined: Sep 2013
Posts: 103
Likes: 1
From: Manitoba
Default D&D fat cat vs python rayzer

I have the d&d fatcat on my RGS but I'm thinking about going with a python rayzer or some kind of side dump.
My question is How much louder is a side dump compared to the d&d?
I put a lot of highway miles on my bike. 10 to 16 thousand miles a year.
 
Reply
Old Oct 27, 2016 | 03:08 AM
  #2  
OldEnuf2NoBtr's Avatar
OldEnuf2NoBtr
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2009
Posts: 9,165
Likes: 1,910
From: Doghouse... mostly
Default

It's going to be quite a bit louder as it going to be right up in your right ear for that 10 to 16 thousand miles a year! Those short exhausts can also be a real pain to tune. I'd keep the D&D.
 
Reply
Old Oct 27, 2016 | 12:43 PM
  #3  
qtrracer's Avatar
qtrracer
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
Default

Side dumps are way louder. I had one for 5 years. I'll never have another one
 
Reply
Old Oct 31, 2016 | 04:42 PM
  #4  
Jimp1967's Avatar
Jimp1967
6th Gear
Joined: May 2016
Posts: 14
Likes: 0
From: Manvel, Texas
Default

For sure stay with the D&D's, side dumps really loud.
 
Reply
Old Oct 31, 2016 | 08:45 PM
  #5  
cdonis's Avatar
cdonis
Outstanding HDF Member
Joined: Jul 2013
Posts: 3,245
Likes: 297
From: Escalon ca
Default

Originally Posted by ARBOC
I have the d&d fatcat on my RGS but I'm thinking about going with a python rayzer or some kind of side dump.
My question is How much louder is a side dump compared to the d&d?
I put a lot of highway miles on my bike. 10 to 16 thousand miles a year.
check out the d &d stubby cat.
 
Reply
Old Nov 5, 2016 | 10:26 AM
  #6  
dfwhockey17's Avatar
dfwhockey17
Outstanding HDF Member
10 Year Member
Photogenic
Liked
Loved
Joined: May 2014
Posts: 2,400
Likes: 284
From: Fort Worth, TX
Default

A customer just left my shop and he had the Rayzer on his bike. It sounded a bit louder than the Fat Cat with the perforated baffle that is on my 117" softail. I don't know if it really was much louder or it it was where the sound was (next to me versus behind me) that made it sound louder...Overall I think is sounded pretty close to my bike, it definitely was not a substantial difference in DB's.
 
Reply
Old Nov 5, 2016 | 11:48 PM
  #7  
martinj's Avatar
martinj
Club Member
Veteran: Air Force
10 Year Member
Liked
Community Favorite
Joined: Mar 2016
Posts: 11,688
Likes: 22,279
From: Clearwater, Idaho
Riders Club Member
Default

Originally Posted by dfwhockey17
A customer just left my shop and he had the Rayzer on his bike. It sounded a bit louder than the Fat Cat with the perforated baffle that is on my 117" softail. I don't know if it really was much louder or it it was where the sound was (next to me versus behind me) that made it sound louder...Overall I think is sounded pretty close to my bike, it definitely was not a substantial difference in DB's.
I'll bet you'll change your mind after sittin' on top of 'em for a few thousand miles.
 
Reply
Old Nov 21, 2016 | 08:15 AM
  #8  
chrisg81983's Avatar
chrisg81983
Road Captain
Joined: May 2015
Posts: 607
Likes: 41
From: long island
Default

Its not the db's its where the sound exits... I am all for loud pipes on my bikes, and would not have it any other way. With side dump exhaust you will loose your mind over time. Trust me i owned several bikes with them installed. Keep the D&D !!!!!!!
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Nov 23, 2016 | 08:01 PM
  #9  
JMC22's Avatar
JMC22
Ultimate HDF Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2013
Posts: 6,044
Likes: 336
Default

Keep the D&D exhaust - not only would it be louder but the shorter pipe I bet would also reduce performance
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rsking45
Exhaust System Topics
5
May 30, 2018 06:58 AM
Nickd2689
Dyna Glide Models
16
Aug 18, 2017 10:20 PM
mgmmgm
Touring Models
6
Jun 21, 2014 09:13 AM
BIGGUY
Touring Models
12
May 29, 2010 09:20 AM
bigirn
Touring Models
4
Apr 16, 2008 11:11 AM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 04:15 PM.

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