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

Need Sprocket Change

Thread Tools
 
Search this Thread
 
Old Sep 5, 2015 | 01:20 PM
  #11  
Next In Line's Avatar
Next In Line
Outstanding HDF Member
Joined: May 2013
Posts: 3,427
Likes: 164
From: Home
Default

Use the gear calculator to figure out what will work with your needs.

See if there is a rear sprocket available. If not, you can always change the primary gearing instead of the transmission pulley.
 
Reply
Old Sep 5, 2015 | 02:07 PM
  #12  
sober1's Avatar
sober1
Cruiser
Joined: Jun 2008
Posts: 196
Likes: 2
From: Batavia, IL.
Default

AFAIK - HD has 66T and 70T Domestic and a 68T International - don't know about aftermarket - here's link to one site <p>http://www.nightrider.com/biketech/calc_gearratios.htm
 
Reply
Old Sep 5, 2015 | 02:09 PM
  #13  
sober1's Avatar
sober1
Cruiser
Joined: Jun 2008
Posts: 196
Likes: 2
From: Batavia, IL.
Default

also, changing rear tire size could gain you a little grunt--- just thinking out loud
 
Reply
Old Sep 5, 2015 | 08:40 PM
  #14  
bklynbob's Avatar
bklynbob
Grand HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2008
Posts: 4,997
Likes: 655
From: bklyn,ny
Default

Originally Posted by galaxyfe
I've got a slim, so, plenty of reasons estate between there and the tire. I would like to keep all the plastic as I actually like it, but not the end of the world if not possible. Just seems like a rear sprocket and belt is cheaper and easier than tearing into the front assembly.
You still have to remove thecinner primary and swingarm iirc. Look into a Primo Rivera game changer 32 tooth comp sprocket. Its less expensive and less labor thane the other 2 options.
 
Reply
Old Sep 6, 2015 | 01:50 AM
  #15  
Next In Line's Avatar
Next In Line
Outstanding HDF Member
Joined: May 2013
Posts: 3,427
Likes: 164
From: Home
Default

Another option would be to change the individual transmission gears. This way there will not be any compromise taking place.
 
Reply
Old Sep 7, 2015 | 04:32 PM
  #16  
galaxyfe's Avatar
galaxyfe
Thread Starter
|
Tourer
Joined: Mar 2014
Posts: 413
Likes: 12
From: St Louis
Default

That's where I'm a little confused...I don't know much about the different tranny/primary gears and what all needs to be swapped. I'm familiar with other bikes in that you just swap out the rear sprocket and you're done. Is this not the popular route; to just swap out the rear sprocket?
 
Reply
Old Sep 7, 2015 | 05:14 PM
  #17  
sober1's Avatar
sober1
Cruiser
Joined: Jun 2008
Posts: 196
Likes: 2
From: Batavia, IL.
Default don't know about "popular" these days

there was a time when you could do a simple engine sprocket change and/or rear chain sprocket change and be done with it. With the advent of the TwinCam motor Harley went to different sized drive set-up to meet the Government demands for emissions/mpg. <p> for what you are looking to accomplish, I think the basic 30/70 swap will trip your trigger. I couldn't find a one or two tooth engine sprocket that is also a compensating sprocket so that's why I went tranny and rear together. I figured it would be easier to switch rear pulley back to stock than the tranny pulley if I was not happy with the the increased RPMs at cruising speed. Now that I've got 100+ miles on the change, it's permanent!<p>
The trans sprocket is not difficult to do. It just requires patience, a HD service manual, a couple of speciality tools, parts of coarse, Loctite, compressed air and tools are a luxury not a necessity. A way to get her up on a milk crate or cinder blocks is a necessity though. There's a couple of great threads here with pics as well. Personally, I'm a manual freak, I study the manual until the task at hand is clear to me before spinning a wrench. When I start getting pissed I walk away - _if I'm unsure, I ask for help. figure on having her down for a few days as well.<p>I went over to my buddies house yesterday who gave me a hand building my 21" for the front. He was running his weed-wacker when I pulled up. I got off with it still running and traded places with him. He took off on down the road. I ended up at his kitchen table visiting with his family when he finally came back. Without prompting he blurted out "HOLY CRAP does that bitch pull! I ain't had fun like that on a bike in I don't no how long!"<p> point to my story - whether it's just the wheel pulley or both - do it, you won't regret it! And the truth is when you change your ratio to a more performance-oriented one, you will realize the full performance gain of cams, pipes, intake and map changes. That's getting the most of your hard earn dollars spent on getting her to run the way YOU want her to. Not the way Uncle Sam wants her to.
 
Attached Thumbnails Need Sprocket Change-img_20150905_123740592.jpg  
Reply
Old Sep 7, 2015 | 06:10 PM
  #18  
Uncle G.'s Avatar
Uncle G.
Seasoned HDF Member
Liked
Loved
Community Favorite
Top Answer: 1
Joined: Jun 2010
Posts: 9,332
Likes: 3,873
From: Upstate New York
Default

Originally Posted by galaxyfe
I've got a slim, so, plenty of reasons estate between there and the tire. I would like to keep all the plastic as I actually like it, but not the end of the world if not possible. Just seems like a rear sprocket and belt is cheaper and easier than tearing into the front assembly.

To change the belt, you're going to need to pull the inner primary and swingarm, so you're 90% of the way to changing the primary sprocket or front belt pulley anyway.
 
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 Sep 7, 2015 | 06:57 PM
  #19  
sober1's Avatar
sober1
Cruiser
Joined: Jun 2008
Posts: 196
Likes: 2
From: Batavia, IL.
Default yes and no

swing arm does not need to be f*cked with to change pulleys on the Softail. <p>pulling the inner, yes. <p>BTW - speedo is off as a result, no big deal.
 
Attached Thumbnails Need Sprocket Change-img_20150621_151243664_hdr.jpg  
Reply
Old Sep 8, 2015 | 01:06 AM
  #20  
Next In Line's Avatar
Next In Line
Outstanding HDF Member
Joined: May 2013
Posts: 3,427
Likes: 164
From: Home
Default

Originally Posted by galaxyfe
That's where I'm a little confused...I don't know much about the different tranny/primary gears and what all needs to be swapped. I'm familiar with other bikes in that you just swap out the rear sprocket and you're done. Is this not the popular route; to just swap out the rear sprocket?
 
Reply



All times are GMT -5. The time now is 07:09 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