• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Race Tech Emulator on GS400/425

  • Thread starter Thread starter velvet jones
  • Start date Start date
V

velvet jones

Guest
Hello,

I am interested in fitting Race Tech emulators to my 1979 GS425E. After conducting a search on the Race Tech website and speaking with one of their applications specialists, they do not list a specific solution.

In order to determine if they have an emulator that may fit, I need to provide Race Tech with some fork tube dimensions that I do not have at the moment. This would require me to disassemble one on my bike or purchase a used fork and get measurements from that one. However, before I do either, I wanted to ask if anyone has successfully implemented the Race Tech emulators on their GS400/425. If so, could you please provide the part number(s) that you used? Thank you in advance.

Best regards,
Aaron
 
I'm pretty sure it has 33mm forks. The later 450's came with 35mm if I'm not mistaken.

But on that note: I would swap the front end with later model GS. It's a pretty easy upgrade.
 
salty_monk,

The outer diameter on the GS400/425 fork tubes are 33 mm, so the ones you mentioned from MikesXS will not fit.

I contacted Speed Moto Co. and they confirmed they have a damper that fits 33-35 mm forks:

http://www.speedmotoco.com/product-p/055-004.htm

I have several other fitment questions that I am waiting on a response to verify everything will work so I will update the thread once I find out anything.

Best regards,
Aaron
 
Big Rich,

Swapping over another front end was option #2. I already have looked on BikeCliff's website to see which front ends may fit based on matching steering stem bearing sizes.

One question though, what other dimensions should I consider from the "new" front end to ensure that my original suspension geometry does not change (e.g. different steering tube length, etc.)?

Best regards,
Aaron
 
As long as you don't use a front end that has a leading axle (from an L model), you should be ok. I have a GS650 front end on my GS450S for the larger tubes and dual disc brakes - the 650 front end has longer forks, but I just slid them up thru the triple tree to keep the original ride height. Really easy to do.

Edit: I want to add - if you do swap font ends, try to find the most complete one possible. Wheel, axle, fender, triple tree, etc.
 
velvet jones said:
salty_monk,

The outer diameter on the GS400/425 fork tubes are 33 mm, so the ones you mentioned from MikesXS will not fit.

I contacted Speed Moto Co. and they confirmed they have a damper that fits 33-35 mm forks:

http://www.speedmotoco.com/product-p/055-004.htm

I have several other fitment questions that I am waiting on a response to verify everything will work so I will update the thread once I find out anything.

Best regards,
Aaron
Click to expand...
Aaron, I've been looking at those KX65 fork emulators for a while to use on my own G450 but I've held off because I'm not sure if emulators meant to work on a 130 lb bike can be adjusted to work equally well on a 400 lb bike. I'd be interested in hearing what Speed Moto has to say about putting them on your 400.
 
hardline_42 said:
Aaron, I've been looking at those KX65 fork emulators for a while to use on my own G450 but I've held off because I'm not sure if emulators meant to work on a 130 lb bike can be adjusted to work equally well on a 400 lb bike. I'd be interested in hearing what Speed Moto has to say about putting them on your 400.
Click to expand...

They can be adjusted however you want.
They don't hold the weight up at all, they just control a little oil movement.
Huge improvement on the bikes I have put them in.
 
Yes, I'd have no issue using them either.
Emulators allow you to split the two damping circuits is all so you can then adjust independently.

The original piston and oil weight will control rebound damping the emulator allows you to adjust compression damping to suit.
 
tkent02 said:
They can be adjusted however you want.
They don't hold the weight up at all, they just control a little oil movement.
Huge improvement on the bikes I have put them in.
Click to expand...

salty_monk said:
Yes, I'd have no issue using them either.
Emulators allow you to split the two damping circuits is all so you can then adjust independently.

The original piston and oil weight will control rebound damping the emulator allows you to adjust compression damping to suit.
Click to expand...
Thanks for the explanation. I assumed that the size of the openings or the little spring or something might be specific to a certain size of bike. These sound like just the ticket for those who want to keep the original 33mm forks and don't have a lathe to turn down a set of Mike's.
 
You must log in or register to reply here.
Back
Top