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Make On-Car Coilover Height Adjustments Without Removing the Shock
Adjusting ride height on Viking and UMI rear coilovers means turning the threaded spring perch, and doing that by hand is nearly impossible once the shock is under load. The UMI 90095 spanner wrench set gives you the leverage needed to rotate the perch collar while the shock stays bolted to the vehicle, so height adjustments can be made in minutes instead of pulling the whole assembly off the car.
Key Features
- Sold as a matched pair for working both sides of the vehicle
- Purpose-built to engage the perch collar on Viking and UMI rear coilovers
- Allows on-car ride height adjustment without removing the shock
- Steel construction designed to handle repeated adjustment torque
- Compact 5.5in handle length for tight suspension bays
Specifications
| Detail | Value |
|---|---|
| Brand | UMI Performance |
| Part Number | 90095 (formerly 7995-101) |
| Tool Type | Coilover Spanner Wrench, Pair |
| Handle Length | 5.5 in |
| Material | Steel |
| Compatibility | Viking Coilovers, UMI Rear Coilovers |
| UPC | Not assigned by manufacturer |
What's Included
- 2 x UMI Performance spanner wrenches
About UMI Performance
UMI Performance designs and manufactures suspension, chassis, and handling components engineered for GM muscle car and performance platforms.
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FAQ
What is the UMI 90095 spanner wrench?It's a pair of steel spanner wrenches designed to grip the threaded perch collar on Viking and UMI rear coilovers, allowing on-car ride height adjustment without removing the shock.
Do I need both wrenches to make an adjustment?Using both wrenches together provides the counter-hold needed to rotate the collar without the shock spinning, which is why the tool is sold as a matched pair.
Will this fit any coilover shock?This wrench is sized specifically for Viking coilovers and UMI rear coilovers and may not engage properly on other brands' perch collars.
Can I adjust ride height without removing the coilover from the car?Yes, that is the primary purpose of this tool, letting you rotate the spring perch while the shock stays mounted to the vehicle.
Is a thrust bearing kit required to use this wrench?A thrust bearing kit is not required to use the spanner wrench, but UMI recommends one since it makes on-car adjustments smoother by letting the spring seat rotate freely.
What is the difference between part 90095 and 7995-101?Part number 90095 is the current designation for the same spanner wrench previously listed as 7995-101.
How long is the handle on this wrench?Each wrench has a 5.5in handle length, sized to provide leverage in typical rear suspension clearance.
Is this wrench sold individually or as a set?It is sold as a set of two wrenches, since both are used together during a height adjustment.
Install Instructions
- Support the vehicle securely and locate the perch collar on the installed coilover
- Position one spanner wrench to hold the lower collar steady
- Position the second spanner wrench on the adjustment collar
- Rotate the adjustment collar to the desired ride height while the holding wrench keeps the assembly from spinning
- Check ride height and repeat on the opposite side to keep both corners even
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