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UMI’s new premium Stage 3.5 kit. No compromises. The stage 3.5 is for the street warrior who just may feel like going out to win an event. This kit is capable of making that a complete success. From back road corner carving to auto-x and pro-touring events, this kit has the performance features you desire along with ease of installation and tuning. UMI’s new 1” lowering springs form the handling foundation and are controlled by RideTech’s HQ rebound adjustable shocks. Our ultra-premium springs feature carefully tuned rates and high quality construction to eliminate the floating feeling and will tie your G-body directly to the road. The RideTech HQ shocks rebound adjustment allows you to fine tune your ride whether you’re doing back road heroics or shaving that last tenth of a second between the cones. UMI a-arms feature tubular construction, Delrin bushings for precise steering and caster corrected uppers. The ½” taller upper ball joints work with the lowering springs to tune up the factory G-body camber curve. Out back the UMI trailing arms feature Roto-joints for smooth articulation combined with poly bushings for a smooth ride. Adjustable upper rear control arms allow for pinion angle tuning while the new pro-tour bar performs on the street, during cornering and even a drag strip blast. Made in the USA.
Tubular lower front a-arms with Delrin bushings.
Tubular upper front a-arms with Delrin bushings & ½” taller ball joints.
Heavy duty 1-1/4” front sway bar with new bushings & endlinks.
Tubular & adjustable 1” pro-touring rear sway bar.
1” lowering springs, linear spring rates (600 lb/in front, 130 lb/in rear).
Tubular rear lower control arms with Roto-Joint.
Adjustable rear upper control arms with Roto-Joints.
Tubular frame braces with hardware.
Replacement rear end housing bushings.
Front upper & lower Grade 8 hardware kit.
Rear control arm Grade 8 hardware kit.
(4) RideTech HQ shocks, handling quality with rebound adjustment.
1978-1988 Monte Carlo, Malibu & El Camino polyurethane body mount kit. Includes...
Part #DM91832 BLACK
The UMI Performance, Inc. reinforcing front frame brace is used to stiffen the f...
Part #DM91893 BLACK
The UMI Performance, Inc. bolt-in brace ties the rear upper shock mounts togethe...
Part #DM91895 BLACK
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