Rebuild and Install a GPR Stabilizer

I currently own 3 GPR V4 stabilizers and just received a new V5 unit. I love these steering dampers! You can mount them without drilling, and they can be adjusted on the fly while you are ridding, and most importantly, you can service them yourself. If you live in the United States, it’s an easy process to ship your steering damper back to GPR for servicing, but it’s a bit more complicated for everyone else. Therefore, having the option to service the steering damper yourself is a big bonus. It’s also nice to have a unit that can be ported to a different bike when or if needed. You simply need to purchase a new mounting kit, and you get to leverage your initial investment by only having to buy the brackets required to secure your stabilizer in place.

In addition to the wide options for adjustability, I also like the fact that the rotary control is “infinite and omni-directional” meaning that you can quickly go from full dampening to no dampening and vice-versa. Having various options for the anodized finish seems like a small thing, but it’s really nice to have an option to pick a colour (black, blue, red or gold) that will match your bike.

The customer support at GPR is simply OUTSTANDING; pick up the phone and call them. They are very good at answering questions and providing advice, and most of the time, the products are shipped almost instantly.

Tools required to service the GPR (V4 or V5) stabilizer:

  • T15 Torx socket
  • 3/64” Allen wrench
  • O ring pick
  • Flat blade screwdriver
  • Clip removal pliers

I preferred to use the syringe from my Motion Pro – Fork Oil Level Tool to fill the fluid in the stabilizer, but you can also use a squeeze bottle with a sharp tip if you have one (I used a squeeze bottle from a Scotts rebuild kit in the past and that worked quite well too). I’ve also successfully done this process in the past by submerging the unit in fluid overnight and reassembling it while submerged.

Tools required for the installation will vary based on the make and model of your bike. The most challenging item to find is a socket that will be big enough to remove the stem nut or bolt from your upper triple. You will also need a 5mm Allen wrench to secure the bolts provided from GPR (at least that is the case for my R6 and my R3).

In the first video, I am talking about the various oil weight required based on the model of your GPR damper. In my case, I decided to go with the Motul FORK OIL EXPERT 15W. Make sure you have plenty of rags or paper towel and some surface/brake cleaner to clean the unit after you flushed the fluid.

In the second video, I explain why I am such a fan of these products and I will also show you how to install them on your bike.

Geek during the day, wine and cigar aficionado in the evening. You can find me on a race track in the summer time and wrenching on motorcycles during the winter months.