Detroit Speed, Inc. DECAlink™ Rear Suspension Kit - (1963-79 Corvette - Base Shocks - 17 Spline Axles - 600hp)
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Detroit Speed, Inc. DECAlink™ Rear Suspension Kit - (1963-79 Corvette - Base Shocks - 17 Spline Axles - 600hp)

Product Code: 041740

The DECAlink™ Independent Rear Suspension features no compromises and exclusive Detroit Speed suspension geometry for superior handling and ride quality. The IRS utilizes modern CV axle shafts and hub bearings, keeping suspension loads from being transmitted through the axle shafts. The DECAlink™ IRS works with an original 17-spline differential assembly with upgrades to 30-spline or a Hammerhead 12-bolt differential. No body modifications are required on 1968-79 models while the suspension is offset inboard for additional tire clearance. All suspension link lengths are adjustable and the kit has adjustments for rear anti-squat geometry and roll center height. The suspension points are hard mounted to eliminate stock rubber mounted suspension deflection.

It comes with forged in the USA Detroit Speed aluminum uprights and a two-piece cast aluminum/steel cradle assembly which eases differential housing removal. DSE/JRi “Detroit Tuned” Coilover shocks/springs allow spring rate tuning and ride height adjustments. The kit includes a rear anti-roll bar and uses OEM cross-axis pivot bushings at all pivot points. The kit also includes Torrington bearings and a spanner tool for easy spring height adjustments.

Base Shock
The DSE/JRi ‘Detroit Tuned’ base shock is a ‘pure blood pedigree’ racing shock in its most efficient form as a non-adjustable unit. Although non-adjustable, it shares all the increased dynamic responses of all the JRi adjustable models while providing excellent ride quality on the street.

Rear Spring Rate: 550lbs/in
Rear Spring Free Length: 8in

Note: Torrington Bearings come with all shock packages included/purchased with the DECAlink™ Rear Suspension

Note: Corvette frame and differential not included with DECAlink™ rear suspension.



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USD $8,850.00
This kit contains:
  • C2 / C3 Rear Coilover Shock - Non-Adjustable (x 2)
  • C2 / C3 Rear Halfshaft (Each) - (Up to 600 Hp) (x 2)
  • C2 / C3 IRS Suspension Box 1 (Upper cradle, trailing arm brackets, ARB, tie braces, hardware kits) (x 1)
  • C2 / C3 IRS Suspension Box 2 (Lower cradle, diff. brackets, hardware kits) (x 1)
  • C2 / C3 IRS Suspension Box 3 (Link assemblies) (x 1)
  • C2 / C3 IRS Suspension Box 4 (Upright assemblies) (x 1)
  • C2 / C3 IRS Suspension Stock Differential 17-Spline Stub Axles Box (x 1)
  • 8" Front Coilover Springs (Pair) - (X-Gen 595 - 550lb / in Spring Rate) (x 1)
Total Suspension Travel 6”

Ride Height* 3” ±1.0”

Static Camber -0.3° ±.2°

Static Toe 0° ±.1°

Total Bump Steer (20” toe span) .027" 


*Measured from bottom edge of upper cradle frame mount bracket to center of hub
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Bob Bertelsen From United States
Detroit Speed Rear Suspension
January 5, 2019
I bought the Detroit Speed Front Speed Ray and DECAlink rear suspension for my 1968 Corvette called Green Mamba. I run a lot of autocross and boy does Detroit Speed suspension work. I am amazed at how agile the Vette is. It turns in, hooks and goes. It is even has nice ride on the street too. I am very pleased with my selection of suspension for my Vette. I would highly recommend this suspension to anyone looking to improve their Corvette's handling.
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