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Stop Losing Power to Flexing Rubber Motor Mounts
Factory rubber motor mounts let the engine rock under load, which softens throttle response and can throw off pulley alignment on hard launches. The UMI90051 solid motor mount kit bolts directly to the frame in place of the factory rubber mounts, cutting engine movement and keeping the drivetrain locked in position for maximum power transfer to the ground.
Key Features
- Solid mount design drastically reduces engine movement compared to factory rubber mounts
- CNC laser cut from 3/16 inch thick mild steel for precise tolerances
- 1 inch OD x 1/4 inch wall DOM steel tubing, MIG welded for maximum strength
- Matches factory mounting specifications for a correct bolt-in fit
- Glossy, durable black powder coat finish
- Made in the USA in Philipsburg, Pennsylvania
Fitment Table
| Year Range | Make | Model |
|---|---|---|
| 1976-1982 | Chevrolet | Camaro |
| 1976-1978 | Chevrolet | Malibu |
| 1979-1982 | Chevrolet | Malibu |
| 1976-1983 | Chevrolet | Monte Carlo |
| 1976-1977 | Chevrolet | El Camino |
| 1978-1983 | Chevrolet | El Camino |
| 1978-1987 | GMC | Caballero |
Specifications
| Detail | Value |
|---|---|
| MPN | UMI90051 |
| UPC | Not assigned by manufacturer |
| Brand | UMI Performance |
| Attachment Style | Bolt-on to frame |
| Material | 3/16 inch mild steel, 1 inch OD x 1/4 inch wall DOM tubing |
| Finish | Black powder coat |
| Sold As | Pair |
| Compatibility Note | Requires factory block mount clamshells or UMI P/N 90058, not compatible with Oldsmobile V8 style clamshells |
| Country of Origin | United States |
What's Included
- UMI90051 solid frame side motor mounts, pair
About UMI Performance
UMI Performance designs and manufactures chassis, suspension and driveline components for GM muscle cars entirely in the United States. Every mount is CNC laser cut and MIG welded in Philipsburg, Pennsylvania to match factory mounting specifications, so drivetrain components install with a correct, repeatable fit every time.
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FAQ
What is the UMI90051?The UMI90051 is a pair of solid frame side motor mounts for 1976 to 1987 GM F-Body and G-Body small block Chevy applications. They bolt directly to the frame in place of factory rubber mounts to reduce engine movement and improve power transfer.
Do I need anything else to install the UMI90051?Yes. Solid mounts must be used with factory block mount clamshells or UMI's P/N 90058 clamshells. They are not compatible with Oldsmobile V8 style clamshells.
Will the UMI90051 make my engine louder or transmit more vibration into the cabin?Solid mounts transmit more vibration and noise than factory rubber mounts by design, since they are built to minimize engine movement rather than isolate it. This tradeoff is standard for performance-oriented solid mount kits.
What material are the UMI90051 mounts made from?The mounts are CNC laser cut from 3/16 inch thick mild steel and use 1 inch OD by 1/4 inch wall DOM steel tubing, MIG welded for strength.
Does the UMI90051 come with hardware?Check the listing for hardware inclusion at time of purchase, as mounting hardware requirements vary by application and clamshell combination.
Is the UMI90051 a direct bolt-on replacement?Yes. These mounts bolt directly to the frame in the factory location and match factory mounting specifications.
What vehicles fit the UMI90051?This kit fits the 1976 to 1982 Chevrolet Camaro, 1976 to 1982 Chevrolet Malibu, 1976 to 1983 Chevrolet Monte Carlo, 1976 to 1983 Chevrolet El Camino, and 1978 to 1987 GMC Caballero, along with many other 1974 and up GM small block V8 applications. Verify centerline and mounting dimensions before ordering.
Is there a California Prop 65 warning for the UMI90051?Yes, this product carries a California Prop 65 warning. See the Prop 65 notice below for details.
Install Instructions
- Support the engine safely with an appropriate engine hoist or support bar before removing factory rubber motor mounts.
- Remove the factory rubber motor mounts from the frame and block mount clamshells.
- Verify the centerline dimension from the cross member surface to the center of the mounting hole matches your original parts before installing.
- Install the UMI90051 solid mounts to the frame using appropriate hardware, paired with factory or UMI P/N 90058 block mount clamshells.
- Torque all hardware to manufacturer specification.
- Lower the engine into position and confirm proper alignment before final tightening.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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