Search Our Site
The Suspension Expert
Walter Preisig
The Suspension Shop is located in Adelaide, South Australia, and was established by Walter Preisig to service the market in Australia with a new generation of YSS gas shocks that are continuously under development by him in partnership with YSS in Thailand.
Walter has been developing racing suspension for over 25 years, gaining a wealth of experience in suspension technics, customer service and motorcycle maintenance.
YSS uses only quality materials and the latest wizardry in suspension technology to manufacture the world class YSS gas shock absorbers, maintaining quality control during the research stage, planning phase and the manufacturing process.
Suspension Shop McDonald Park
Philosophy
“ It's unwise paying too much, but worse paying too little. By paying too much, you lose a little money. By paying too little, you could lose everything, because what you've bought would be incapable of doing what it was bought for. The law of business balance prohibits paying a little and getting a lot. If you deal with the lowest bidder, it's wise to add a bit for the risk you run and if you do that, you can pay for something better. "
That said and with this in mind, the Suspension Shop is servicing the motorcycle community in Australia and overseas as well as furthering the research, manufacture and development of top quality world class shock absorbers for racing purposes and casual driving without breaking the bank.
Now accepting Cards

YSS PD Fork Valves and Technical Fork Valve Assembly Guide
42.5 mm YSS PD Fork Valves
The new YSS PD Fork Valves give that progressive and controlled feeling of a cartridge fork. The PD Fork Valve has a radial computer designed valve housing made of 6061 T6 aluminium for light weight and is 65 Rockwell hardened for long life and appearance.
YSS PD Fork Valves are damping adjustable and tuneable to any application and they are Easy to install as well as extremely cost effective. YSS PD Fork Valves can be used for On- and Off-Road, Racing and Touring.
They are fully tested by YSS and proven to perform as you would expect from a superior YSS product. Our PD Fork Valves suit all brands of motorcycles with conventional forks, such as BMW, Harley Davision, Honda, Kawasaki, Suzuki, Triumph and Yamaha. PD Fork Valves are available in the following sizes: 17.5 mm, 31.0 mm, 23.8 mm, 33.5 mm, 26.5 mm, 36.0 mm, 29.0 mm, 42.5 mm
Call the Suspension Shop on +61 (08) 8284 8033 or visit us at LOT 257 Heaslip Road in McDonald Park 5121, South Australia - Our Suspension Shop has a huge stock of Fork Valves in the Warehouse for immediate fitting or dispatch.
We recommend you select the correct fork spring for your motorbike and that you check the proper fit before you install your PD Fork Valves. Call the Suspension Shop on +61 (08) 8284 8033 for any questions you have regarding PD Fork Valves and selecting recommended Fork Springs.
Tool Requirements for PD Fork Valve Assembly
| Required Tools | Diagram for PD Fork Valve Assembly |
|---|---|
|
|
Step-by-Step Guide for PD Fork Valve Assembly
| NOTE: All these steps should be done by a qualified suspension mechanic. Or Suspension Shop is NOT responsible for any damage to shock absorbers, vehicles or injury to persons, if the instructions are not exactly followed. The warranty will also be void. | |
|---|---|
| Note | Assembly Steps for PD Fork Valve Installation |
PD Fork Valves are available in the following sizes for Motorcycles with Conventional Forks:
Order Online Here or call our Suspension Shop +61 (08) 8284 8033 |
|
Tuning Options for PD Fork Valves
| Tuning | Standard | Optional | Advantage |
|---|---|---|---|
| (1.) Oil Viscosity | 10W | 15W, 20W, 30W | More or less rebound depends on viscosity to make stability |
| (2.) Valve Spring Preload | (3.) Two (2) Turns | 0 to 7 | Overall firmness, controlling the speed of front end dives under braking |
| Valve Spring Rate | 7 N for 175, 235, 265, 290 12 N for 310, 335, 360, 425 |
12 N 7 N |
Overall firmness and smooth ride on square shaped bumps |
|
|||
YSS PD Fork Valves suit All Motorcycles with Conventional Forks
PD Fork Valves - Easy Installation - Order Online Here
Shock Absorbers for any Motorcycle
The SUSPENSION SHOP is your One-Stop Suspension Shop with a vast range of products at hand - ready made and also customised for any motorcycle. Feel free to call THE SUSPENSION SHOP to discuss a solution for your technical needs.

YSS PD Fork Valves
PD Fork Valve Assembly Diagram