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.
Details:
Fits Vehicles:
Double Adjustable Shock w/ Remote Canister:
Remote Canister Shock Mounts: (Sold Separately)
Note:
Wheel Fitment - Tire Recommendation: (Stock Body)
Wheel Fitment - Tire Recommendation: (Flared Body)
Decalink Specifications:
Detroit Speed puts a significant amount of effort into developing long-lasting, dependable products that are formulated to exceed late-model performance expectations. Our systems are designed by exceptionally qualified engineers and built by fabricators dedicated to making the best systems they possibly can. Our parts are made using state-of-the-art manufacturing technologies–CNC machining, forging, hydroforming, and more–to bring your classic muscle car to the 21st century.
Months of testing, revising, and polishing stand behind every product we make available to the public, and our test cars prove the point. Each of our development mules receive thousands of hard miles attending car shows, completing road trips, crushing autocross paddocks, and storming track days in the process. The pursuit of perfection has always been our primary goal, and it always will be. Because of this, we can confidently say our systems are the best, most comprehensive solutions to any and all your muscle car problems.
| Make | Model | Submodel | Years |
| Chevrolet | Corvette | Indianapolis 500 Pace Car | 1978 |
| Chevrolet | Corvette | Silver Anniversary Edition | 1978 |
| Chevrolet | Corvette | Stingray | 1975 - 1976 |
| Chevrolet | Corvette | 1963 - 1979 |
| Adjust Type | Double Adjustable |
| Axle Spline | 17 Spline |
| Chassis Codes | GM C3 Corvette, GM C2 Corvette |
| Color | Black/Silver |
| Finish | Bare/Powdercoat |
| Location | Rear |
| Manufacturer Warranty | 2-Year Limited Defects and Workmanship |
| Material | Steel/Aluminum |
| Motor Horsepower | 600HP |
| Ride Height | 3 Inches Plus/Minus 1 Degree |
| Series | Decalink |
| Shock Canister | Remote Canister |
| Spring Free Length | 8.0 Inch |
| Spring Rate | 550 Lbs |
| Static Camber | 0.3 Degrees Plus/Minus 0.2 Degrees |
| Static Toe | 0 Degrees Plus/Minus 0.1 Degree |
| Thread | M12 x 1.5 |
| Total Bumpsteer | 0.27 Inches (20 Inch Toe Span) |
| Travel Length | 6.0 Inch |
| Vehicle Type | Car |
| Wheel Bolt Pattern In. | 5 x 4.75 Inch |
| Wheel Fitment | 17 x 8 Inch w/ 4 Inch Backspacing - 245/45R17, 17 x 9 Inch w/ 4.5 Inch Backspacing - 275/40R17 (Maximum Width Recommended), 18 x 10 Inch w/ 5.5 Inch Backspacing - 295/35R18 (Maximum Width Recommended) For Stock Body, 18 x 11.5 Inch w/ 5.5 Inch Backspacing - 315/30R18, 18 x 12.5 Inch w/ 5.5 Inch Backspacing - 335/30R18 (Maximum Width Recommended) For Flared Body, 18 x 8 Inch w/ 4 Inch Backspacing - 245/40R18, 18 x 9 Inch w/ 4.5 Inch Backspacing - 275/35R18 |
