Bolt-in rear coilover conversion built for consistent drag launches on your F-Body
The UMI Performance 2046-C211-110 rear coilover kit converts the 1982-2002 GM F-Body rear suspension to a true 2-1/2 inch racing coilover setup with a 110 lb/in drag-spec spring rate. UMI2046-C211-110 uses a Viking double adjustable shock with 19-way compression and rebound settings, giving full control over ride height, spring rate, and damping from one bolt-in kit. The FEA-designed lower bracket holds the shock in double shear and only one 3/8 inch hole per side needs to be drilled for installation.
Key Features
- UMI2046-C211-110 delivers full ride height, spring rate, and damping adjustability in one kit.
- 110 lb/in drag-spec spring rate tuned for consistent launches at the strip.
- Viking double adjustable shocks offer 19 compression and 19 rebound settings.
- Double shear upper and lower mounts for a direct bolt-in installation.
- Accommodates a true 2-1/2 inch racing coilover spring.
- Includes spacers for use with control arm relocation brackets.
Fitment
| Year Range | Make | Model |
|---|---|---|
| 1982-2002 | Chevrolet | Camaro |
| 1982-2002 | Pontiac | Firebird |
Specifications
| Detail | Value |
|---|---|
| SKU | 2046-C211-110 |
| Brand | UMI Performance |
| Position | Rear |
| Spring Rate | 110 lb/in (drag application) |
| Shock Type | Viking double adjustable, 19-way compression and rebound |
| Coilover Size | 2-1/2 inch racing coilover |
| Bracket Material | 3/16 inch mild steel, laser cut and powder coated |
| Installation | Bolt-in, one 3/8 inch hole per side required |
| Country of Manufacture | Made in the USA |
| UPC | Not published |
What's Included
- Two Viking double adjustable rear coilover shocks
- Two 2-1/2 inch, 110 lb/in coilover springs
- Laser cut, powder coated mounting brackets
- Spacers for control arm relocation brackets
- All mounting hardware
About UMI Performance
UMI Performance designs, tests, and manufactures suspension components in Philipsburg, Pennsylvania, using North American steel and in-house laser cutting and welding. Its coilover kits and control arms are developed and raced on UMI's own test vehicles before release.
Related Parts
Frequently Asked Questions
What is the 2046-C211-110?The 2046-C211-110 is a UMI Performance bolt-in rear coilover kit for the 1982-2002 GM F-Body, built with a 110 lb/in drag-spec spring rate and a Viking double adjustable shock.
Why choose the 110 lb/in spring rate over other options?UMI recommends the 110 lb/in spring for drag racing applications, where a softer initial rate helps transfer weight to the rear tires during launch. Higher rates such as 150, 175, and 200 lb/in are intended for street and road race use.
Does this kit require welding to install?No. The kit uses a bolt-in design and requires drilling only one 3/8 inch hole per side, with no welding needed.
Can ride height be adjusted after installation?Yes. The coilover design allows ride height, spring preload, and shock damping to all be adjusted independently once installed.
Is this kit compatible with aftermarket control arm relocation brackets?Yes. Spacers are included specifically for use with control arm relocation brackets.
How many adjustment settings does the Viking shock offer?The Viking double adjustable shock offers 19 compression settings and 19 rebound settings, adjusted independently.
Where is this kit manufactured?UMI Performance designs, tests, and manufactures the 2046-C211-110 kit in Philipsburg, Pennsylvania, USA.
Install Instructions
- Support the vehicle safely on jack stands and allow the rear axle to hang freely.
- Remove the factory rear shocks and springs from both sides.
- Install the double shear lower bracket at the axle mount and drill the single required 3/8 inch hole per side.
- Mount the double shear upper bracket at the factory upper shock location.
- Install the Viking coilover shock and pre-assembled spring between the upper and lower brackets.
- Set the desired ride height and spring preload using the coilover adjustment collar.
- Adjust the Viking shock's compression and rebound settings to match the intended use.
- Repeat on the opposite side, then lower the vehicle and verify ride height.
Coilovers
Coilovers from KW Suspension, Bilstein, FOX, ICON Vehicle Dynamics, Ohlins, Silver's NEOMAX, BC Racing, Fortune Auto, Ridetech, QA1, H&R, and Eibach are stocked at Black Ops Auto Works for street cars, track cars, off-road trucks, lift-application SUVs, and classic muscle car conversions. Every product is filterable by year, make, model, trim, and drivetrain so the correct coilover kit ships the first time. Black Ops Auto Works carries 1,646 coilover SKUs across non-adjustable, single-adjustable, double-adjustable, and remote-reservoir categories. What This Collection Covers A coilover combines a shock absorber and coil spring into a single adjustable unit with a threaded body for ride height adjustment. Coilovers offer purpose matched spring rates and damper valving that a lowering spring on a factory shock cannot replicate. Product Categories Non-adjustable coilovers, single-adjustable coilovers, double-adjustable coilovers, remote-reservoir coilovers, off-road lift coilov...
View Coilovers Products
Coilovers & Components
Coilovers and coilover components are stocked at Black Ops Auto Works for trucks, SUVs, muscle cars, and street performance builds. Shop complete coilover kits, coilover springs, lowering springs, shock boots, dampening adjustment extenders, and suspension hardware for Ford, Toyota, Chevrolet, Jeep, Dodge, and Porsche platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct coilover setup ships the first time. Black Ops Auto Works carries 2,259 coilover and component SKUs across street, off-road, and track categories. What This Collection Covers Coilovers combine a coil spring and a shock absorber into a single adjustable unit, giving control over ride height and, on many models, damping stiffness. This collection also includes the individual components used to service, upgrade, or protect an existing coilover system. Product Categories Complete coilover kits, individual coilover shocks, coilover springs, lowering springs, protective shock...
View Coilovers & Components Products
Suspension
Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...
View Suspension Products
UMI Performance
UMI Performance for GM A-Body, G-Body, F-Body Camaro and Firebird, B-Body, H-Body, CTS-V, and LS-powered muscle builds are stocked at Black Ops Auto Works. Shop control arms, sway bars, torque arms, panhard bars, K-members, braces, springs, crossmembers, bushings, and coilover conversion hardware. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 219 UMI Performance SKUs across vehicle-specific performance categories. About UMI Performance UMI Performance builds suspension, chassis, and drivetrain support parts for classic and late-model American muscle. The current catalog is especially deep for GM A-Body, G-Body, F-Body, and related domestic rear-wheel-drive platforms. Vehicle-Specific Selection Use the application details on each listing to narrow the selection to the exact platform. Product availability and specifications vary by model year and configuration. What This Collect...
View UMI Performance Products


