Shock Rebuilders - What wt. Shock Fluid?

4 replies to this topic
  • couly

Posted February 15, 2002 - 06:56 AM


What weight shock fluid are you using?
I'm about 175-180lbs. all geared up if that matters.
Purchased a new shock bumper from White Bros., old one was ripped. New one sure feels stiffer when trying to compress it in my hand compared to the old one.

Thanks for the help,

  • DaveJ

Posted February 15, 2002 - 08:11 AM



I'm bias to using the KYB fluid that is imported by Enzo Racing. I did a lot of work with multiple fork fluids and found the KYB oil to be one of the best.

Note that they two oils are different. Contact Enzo or your dealer can get it via Parts Unlimited or White Brothers.

By the way, oil type and viscosity are not a consideration of rider weight. That's a function of spring, valving and nitrogen charging.

Let us know how it goes.


Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • MX_Tuner

Posted February 15, 2002 - 02:58 PM



You can change the bottoming bumper without losing any oil. You will have to release the nitrogen pressure but you don't have to pull the shaft out of the shock. You can do it all from the clevis end.

  • crazyadam

Posted February 16, 2002 - 01:56 PM


:D Thanks for the shim #'s MXTUNER :) I'll be going into the shop for some government work tomorrow! :D
And where can I buy a better bottoming bumper?

  • John_Curea

Posted February 17, 2002 - 03:25 AM



Honda PN 52427-KZ4-901

This is that same bumper used on the '01 and '02 YZ shocks. It offers much better bottoming resistence, I think it retails for around 12 dollars.

Take Care, John

Related Content


100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

YZ450F 03 Sparks driving me crazy by SirAttard

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.