Fork spring replacement - Yamaha FZ-09 Forum
 2Likes
  • 1 Post By Harsay
  • 1 Post By Harsay
 
LinkBack Thread Tools Search this Thread
post #1 of 10 Old 06-10-2015, 01:50 AM Thread Starter
Junior Member
 
Join Date: Jun 2015
Location: Phoenix, AZ
Posts: 24
Fork spring replacement

Any insight on replacing the stock .75 springs with .85 springs?

Is there a certain kit available with springs and the spacers required?

Generally forks work best with just a little bit of pre-load and the right spring, and I have too much preload right now. I weigh 175# plus gear (so 190# - 195#) and I'm thinking either .85 or .90 depending on what spacer setup and spring length and baseline pre-load it would achieve.

Also, is there any fork service information available? Is there a quick-easy cartridge conversion that doesn't cost $2K?

I may go to a slightly heavier fluid with stock valving.

Current setup is front preload 1 line showing, front forks dropped 15mm, front rebound at max, and rear spring at max if anyone is curious.

Thanks,
Dave
cosmokenney likes this.

2015 Matte Silver FZ-09
2010 Ducati 1198
2008 Ducati 1098R with 1198RS12 engine
Harsay is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 06-15-2015, 11:21 PM
Junior Member
 
Hoodman's Avatar
 
Join Date: Apr 2014
Location: Bluff City, TN
Posts: 28
I went with the Hyper Pro Street Box kit, which includes new rear shock and progressive front springs and fork oil. If you call and give your weight he will send you the correct springs and fork oil. High performance motorcycle suspension sales and service from EPM Performance Imports

1983 GS1100
2004 TTR225
2014 FZ-09
Hoodman is offline  
post #3 of 10 Old 06-23-2015, 03:59 AM Thread Starter
Junior Member
 
Join Date: Jun 2015
Location: Phoenix, AZ
Posts: 24
Thanks for the info, just saw this. Went with Stoltec for new fork springs (ordered but not installed yet) and installed the ZX10R rear shock.

Will look into dampening the LH fork also, and using a lighter weight fork fluid.
Piggyboy likes this.

2015 Matte Silver FZ-09
2010 Ducati 1198
2008 Ducati 1098R with 1198RS12 engine
Harsay is offline  
 
post #4 of 10 Old 06-23-2015, 11:51 AM
Junior Member
 
Join Date: Jun 2015
Posts: 1
Stoltec

How did you get a hold of Nick at Stoltec. I've been trying for days and no reply to emails. I want to purchase a shock and fork cartridge for my fz-09 but it seems impossible
Eyabusa is offline  
post #5 of 10 Old 06-23-2015, 11:57 AM Thread Starter
Junior Member
 
Join Date: Jun 2015
Location: Phoenix, AZ
Posts: 24
I just ordered online on the website. Any "notes" included in the order, he responded to that right away. I don't have his phone number but I don't think he takes calls as he probably has a day job.
Harsay is offline  
post #6 of 10 Old 06-23-2015, 05:20 PM
Member
 
Join Date: Aug 2014
Posts: 70
Garage
These guys were pretty easy to get a hold of .GP Suspension > Products It's all the same penske stuff. You can also find your nearest dealer here Penske Shocks
Patrick is offline  
post #7 of 10 Old 12-25-2015, 09:36 AM
Junior Member
 
Join Date: Oct 2015
Posts: 3
dannyt565 is offline  
post #8 of 10 Old 01-01-2016, 03:22 AM
Junior Member
 
pattonme's Avatar
 
Join Date: Jan 2016
Location: Northern VA
Posts: 5
Quote:
Originally Posted by Harsay View Post
Is there a quick-easy cartridge conversion that doesn't cost $2K?

I may go to a slightly heavier fluid with stock valving.
Yes. There are solutions from $200, mid-400, about 650 (Andreani) and higher of course. Shock solutions range from $350, under 6, around 1K, or higher.

The stock valving (piston and shims) are hopeless. No amount of futzing with oil is going to fix the problem.
pattonme is offline  
post #9 of 10 Old 01-05-2016, 10:05 PM
Member
 
Join Date: Mar 2014
Location: Utah
Posts: 68
Garage
I just bought some .90 springs from Stoltec for about $90 with some 10 wt fork oil to help the front and a ZX-10 rear shock off of eBay to help the back.

I couldn't see spending $1,000 on each end of this bike so I'll try this first.

'11 Ducati Streetfighter S
'13 Triumph Street Triple R
'12 Triumph Bonneville
'10 BMW F800GS
'13 Yamaha FZ-09
'76 Honda cafe
'76 Honda cafe
Piggyboy is offline  
post #10 of 10 Old 11-05-2017, 07:58 PM
Junior Member
 
Join Date: Nov 2017
Posts: 3
Quote:
Originally Posted by Piggyboy View Post
I just bought some .90 springs from Stoltec for about $90 with some 10 wt fork oil to help the front and a ZX-10 rear shock off of eBay to help the back.

I couldn't see spending $1,000 on each end of this bike so I'll try this first.
Hi Piggyboy,
Did you modify the zx10r shock before installing it and what year was it from?
Thanks
wely is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha FZ-09 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search



Similar Threads
Thread Thread Starter Forum Replies Last Post
Clutch & Timing Chain Cover replacement tunnelvision748 Yamaha FZ-09 Service and Maintenance 7 11-22-2018 05:30 PM
HORN replacement, not relocation Snuffy Smiff Yamaha FZ-09 Parts & Accessories 3 03-20-2015 05:23 PM
Best tires for stock replacement ? xXAristidesXx FZ-09 General Discussion forum 7 10-26-2014 08:02 AM
Early sign of spring SIMMY Ontario 5 01-07-2014 06:58 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome