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

strait pipes

Thread Tools
 
Search this Thread
 
Old Jun 8, 2005 | 05:39 PM
  #1  
bastardmaker's Avatar
bastardmaker
Thread Starter
|
Road Warrior
Joined: Jun 2005
Posts: 1,481
Likes: 1
From: Mckinney TX
Default strait pipes

is there any laws against running strait pipes? im wanting to put strait pipes on my bike, but am curious about the legality of this. i live in tx so if anyone has any info, or could send me in the right direction that would be great
 
Reply
Old Jun 8, 2005 | 06:02 PM
  #2  
Terry TK's Avatar
Terry TK
Big Kahuna HDF Member
Joined: Feb 2005
Posts: 20,310
Likes: 160
From: San Antonio Texas
Default RE: strait pipes

Jason,

I think straight pipes are against the law in just about all states. You can get by with it if you hold it down but sooner or later your going to get busted. They are very loud. Make my Rineharts sound like stock pipes. Besides you actually lose HP with straight pipes because you have no back pressure at all.

Terry
 
Reply
Old Jun 8, 2005 | 10:35 PM
  #3  
monkyman's Avatar
monkyman
Outstanding HDF Member
Joined: Feb 2005
Posts: 2,925
Likes: 5
From:
Default RE: strait pipes

There is definatly a law against them in my state, Connecticut. There are people that run them, and durring the day you can get away with it (unless they are looking for a reason to pull you over), but at night forget it, the law changes the decible limit after 9 or 10 pm, and then it's a $150.00 fine.
 
Reply
Old Jun 8, 2005 | 11:19 PM
  #4  
pococj's Avatar
pococj
Seasoned HDF Member
20 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2004
Posts: 11,068
Likes: 1,477
From: Texas! Ya mean there's someplace else?
Default RE: strait pipes

Yep, they are illegal in Texas. But tons of folks run them. Ya just gotta be delicate on the throttle when around places that might take exception to them. And you won't like the torque loss from about 2k thru 3.5k rpm, which happens to be in the area you spend most of your riding time. Here's something I put together that might help. It's in this section and is called "Drag Pipe How-To."

http://www.vtwintalk.com/m_5286/tm.htm
 
Reply
Old Jun 8, 2005 | 11:45 PM
  #5  
bastardmaker's Avatar
bastardmaker
Thread Starter
|
Road Warrior
Joined: Jun 2005
Posts: 1,481
Likes: 1
From: Mckinney TX
Default RE: strait pipes

thank you for the input,
 
Reply
Old Jul 6, 2005 | 04:25 PM
  #6  
dert's Avatar
dert
Road Master
Joined: Jun 2005
Posts: 916
Likes: 1
From:
Default RE: strait pipes

I live in Texas and go through a lot small rural "redneck" towns.I just keep it down.A lot of Police Officers ride here and some have straight pipes .I have installed 4.5 " baffles with slight modification,..ie......bend the tabs in a little so you dont have too much back pressure .It quietens it down a little,actually sounds good .The baffles are economical and easy to install.
 
Reply
Old Jul 11, 2005 | 11:26 PM
  #7  
2_up_FXDI's Avatar
2_up_FXDI
Cruiser
Joined: Jul 2005
Posts: 135
Likes: 0
From: Poteau, Oklahoma
Default RE: strait pipes

I have heard of "Torque Cones" that install at the cylinder heads exhaust port that provide fair backpressure while getting the VERY LOUD sound some of us southern boyz wanna get with straights. If I find out about them I'll post my info on here.
 
Reply
Old Jul 14, 2005 | 10:06 AM
  #8  
dert's Avatar
dert
Road Master
Joined: Jun 2005
Posts: 916
Likes: 1
From:
Default RE: strait pipes

Look in the J&P cycles website or catalog if you have one .A local shop confirms that they work,used in their custom,s ..about 30.00 and looks easy to install ..
 
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 Jul 14, 2005 | 12:21 PM
  #9  
pococj's Avatar
pococj
Seasoned HDF Member
20 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2004
Posts: 11,068
Likes: 1,477
From: Texas! Ya mean there's someplace else?
Default RE: strait pipes

The torque cones don't really provide much in the way of backpressure. What they do is increase the velocity of the exhaust gases by reducing the diameter of the pipe. This helps prevent reversion, where exhaust gases travel back up the pipe and get back into the combustion chamber.

You can make a set of them by going to a hardware store and finding a couple sweat-on copper pipe reducers that will fit the ID of your pipes. Should cost you a couple bucks. Drive them into your pipes with the small diameter facing the exit end.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Gambler72
General Harley Davidson Chat
1
Oct 16, 2011 08:30 PM
37heritage
Road Trips
9
Apr 9, 2011 09:30 AM
elky72ss454
Screamin Eagle CVO Models
0
Aug 24, 2008 07:30 PM
anubisss
General Harley Davidson Chat
27
Apr 8, 2008 08:12 AM
Chad1200
Sportster Models
2
Jan 21, 2008 12:54 PM




All times are GMT -5. The time now is 09:31 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