Description
Z31 Adjustable Suspension Conversion Kit
Replacement shocks and struts used to be easy to find for the Z31, but the choices are now very limited. Cars with the factory adjustable suspension have had it worst. Nothing fit without KYB’s adapter kits, and KYB has stopped making them and the remaining stock has run out. Until now, the only option was to swap to the non-adjustable strut tubes and top mounts.
We’ve designed a kit that changes that. It lets your adjustable-suspension car use the same replacement strut cartridges and shocks that fit the non-adjustable cars.
What’s in the kit
- 2 new gland nuts for the front struts
- 2 spacers for the rear top mounts
Use one of the washers that come with your new shocks under the top nut for a tight fit.
Ordering and production
We make these kits in batches of 10 to keep the price where it is. If the kit shows as backordered, the current batch hasn’t reached 10 orders yet. Once it does, production takes about 30 days.
Next batch: awaiting orders
KYB parts to use with this kit
| Part number | Description | Qty |
|---|---|---|
| KYB 365056 | GR-2 / Excel-G front strut | 2 |
| KYB KG5787A | Gas-A-Just monotube rear shock | 2 |
Optional, if your parts show wear
| Part number | Description | Qty |
|---|---|---|
| KYB SM5097 | Strut upper mount | 2 |
| KYB SM5064 | Strut bearing | 2 |
| KYB SB104 | Strut boot kit | 2 |
| KYB SB107 | Shock boot kit | 2 |
Rear upper shock mounts
If the rubber in your rear upper shock mounts shows any cracking, don’t reuse them. Get a pair of non-adjustable rear upper shock mounts from a parts car or a used Z car parts supplier, such as VintageZparts.com or Sean Jarman on Facebook. Rebuild them with the KYB bushings below. With non-adjustable mounts, you won’t need the rear spacers from this kit.
| Part number | Description | Qty |
|---|---|---|
| KYB SM5325 | Non-adjustable shock mount bushing | 2 |





