inner primary compatibility

Reply Subscribe

Thread Tools

Search this Thread

Sep 19, 2016 | 08:26 AM

das56170

Thread Starter

Cruiser

Joined: Oct 2008

Posts: 234

Likes: 15

From: Southern California

inner primary compatibility

I have a 1990 FXSTS with a cracked inner primary. I've see a few for sale on ebay listed for years 89-93, and a lot for '94 and later. Did the inner primary case change in '94 or would something off a 94 or later model fit my bike? Thanks.

Sep 19, 2016 | 08:44 AM

misfitJason

Seasoned HDF Member

Joined: Dec 2010

Posts: 6,850

Likes: 1,389

From: Florida

The starter is the main difference and transmission if we are talking early to late

Sep 19, 2016 | 10:25 AM

das56170

Thread Starter

Cruiser

Joined: Oct 2008

Posts: 234

Likes: 15

From: Southern California

ok, thanks for the info

Sep 19, 2016 | 07:08 PM

Tom84FXST

Seasoned HDF Member

Joined: Nov 2009

Posts: 15,706

Likes: 22,739

From: Farmington ,MS

Quote:

Originally Posted by das56170

Did the inner primary case change in '94 or would something off a 94 or later model fit my bike? Thanks.

Domino effect...the inner changed because they changed the jackshaft on the starter...the only real difference is the OD around the seals...so now you have to use a 94 up jackshaft...which means you have to use a 94 up clutch hub cause the tooth count is different...I believe you have to use a 94 up outer also...they also changed to compensator in 94 from 24 to 25 teeth...you will need that too.

So if you can find a complete 94 up primary from someone who changed to a belt drive...no problem.

Last edited by Tom84FXST; Sep 19, 2016 at 07:22 PM.