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Protouring stance Kit Double Adjustable Coil Over Front & Rear Kit 1964-1967 A Body

$1,809.00
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1964-1967 GM A-Body Front & Rear Coilover Kit, 2-3″ Lowering


This kit is a full front and rear coil over conversion kit, chose the spring rate for the perfect ride

this complete coilover kit helps dial in your handling with one simple part number. We’ve combined our most popular front and rear kits A225 and VRA209 into one convenient package suitable for lowering your car up to 2-3 inches.

The trailing arm relocation brackets feature multiple trailing arm angles to enhance forward traction or adjust rear steer. Viking hybrid front kit combined with UMI’s race proven rear bracket system covers street, strip and handling applications with ease.

Add optional thrust bearings and spanner wrench to complete your purchase. 


  • This kit allows moderate to aggressive lowering. 2-3 inches
  • 450/550 lb/in front rates available
  • 175/225 lb/in rear rates available

About the rear brackets

UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustments, while trailing arm adjustment enables fine tuning of instant center. The reinforced upper mount is a direct bolt-in (requiring one additional hole to be drilled) and holds a true 2-1/2” racing coilover with double-shear mount.

The FEA designed reinforced lower brackets bolt directly over the stock rear lower control arm mounts, utilizing the existing lower shock hole(s) (may requiring drilling of additional hole depending on factory configuration).

The 2-hole trailing arm height adjustment enables fine tuning of instant center location for drag launch or auto-x/road race rear steer tuning.

STOCK AXLE ONLY: THIS KIT IS A DIRECT BOLT-ON ONLY WHEN USED WITH A GM AXLE HOUSING AND STOCK GM BRACKETS. AFTERMARKET HOUSINGS VARY WIDELY IN DESIGN AND LAYOUT, WHICH MEANS THE 4057 BRACKET WILL NOT BOLT ON.

The Viking Performance shock is 19-way adjustable in both compression and rebound, and ensures the perfect setting for every application.

Note: Rear shocks may not clear all exhaust tail pipes.


  • Kit Includes:
  • (4) Coil-Over Double Adjustable Shocks, A225 and VRA209 
  • (4) Light-Weight, High Travel Coil Over Springs
  • Rear High Quality Coil-Over Conversion Mounting Brackets
  • Mounting Hardware
  • Spanner Wrenches & Thrust Bearings...... (optional)

All Viking shocks are double adjustable allowing the user to independently adjust compression and rebound
Huge adjustment range allows the user to adjust settings for a comfortable cruising to high performance racing, and everything in between
Evenly spaced valving adjustments from click to click
19 positions of compression adjustment and 19 positions of rebound adjustment for a total of 361 different valving combinations
Lightweight aluminum twin-tube design with a sleek clear anodized finish
Adjustment knobs: Labeled with a "C" for compression and an "R" for rebound
Ride height adjustable. Increased range of ride height adjustment over most other brands. Tight tolerances on threads provides for easier ride height adjustments. Left-hand threads between the base and the body ensures that the shock doesn't come apart when adjusting ride height, as can occur with certain other brands
Aluminum, precision machined piston with deflective disc technology and a PTFE / bronze piston seal
Three-step sealing system
5/8" hard chrome plated, centerless ground piston rod
Each shock is dyno tested and serialized (individual serial # on each shock)
All shocks can be rebuilt or revalved by the Viking factory or any authorized re-builder
Two year materials and workmanship warranty!

STOCK AXLE ONLY: THIS KIT IS A DIRECT BOLT-ON ONLY WHEN USED WITH A GM AXLE HOUSING AND STOCK GM BRACKETS. AFTERMARKET HOUSINGS VARY WIDELY IN DESIGN AND LAYOUT, WHICH MEANS THE 4057 BRACKET WILL NOT BOLT ON.

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