Multilink Independent Rear Suspension

AME Multilink Independent Rear Suspension

Three years in the making and with the performance and road testing complete, Art Morrison Enterprises “revolutionary” Multilink IRS is now ready for sale! The AME Multilink IRS is the first multi-link design and also the first IRS design that actually improves the cornering performance of the vehicle. The IRS will be available for just about everything we make, whether it is one of our GT Sport bolt-on chassis, custom builder’s chassis or a rear subframe.

Super Chevy magazine Suspension Challenge test driver Mary Pozzi, an 11-time SCCA Autocross Champion – summed it all up by saying “This is THE BEST suspension I’ve ever felt underneath a car on a track.” That’s a strong testimonial from a highly credentialed professional.

Matt Jones’ familiar 1969 Camaro was fitted with the prototype AME Multilink IRS and taken to Super Chevy magazine’s “Suspension Challenge” held at Willow Springs Raceway in California. The car easily out-handled even the new Camaro SS and earned glowing accolades from all who drove it.

The decoupled links allow changes to one parameter without affecting others. For example, during the design phase we were able to make an adjustment to the camber curve with little or no effect on the roll center. This gives you the freedom to set the car up for optimal handling under varying conditions.

Direct Load Paths

Through use of decoupled lower links a direct load path is created that prevents control arm failure. Moreover, most bushings are loaded in their radial direction for maximum stiffness.

Superior Knuckle Support

Typical wishbone designs attach at three points in single shear. The Morrison Multilink IRS has four attachment points to control freedom of movement, three of which are double-shear attachments.

Improved Wheel Control

With the AME Multilink IRS you can establish functionally independent camber, caster and toe curves. Moreover, critical toe link locations can be tuned to allow dynamic steering while maintaining stability in high bump situations. For example, you can have up to 1° toe at max bump travel. The minimized link deflection and high durometer bushings help maintain precise wheel alignment.

Ride Quality Improvements

Unsprung vehicle weight is reduced by approximately 100 lbs., requiring less spring rate to control wheel movement. NVH (noise/vibration/harshness) is reduced because it must travel through three sets of bushings before reaching the driver’s compartment.

Unique Cradle Design

Not only does this facilitate installation of the Multilink IRS in most Morrison GT Sport chassis, but makes it easily adaptable to other vehicles. It can be aligned to the vehicle during installation and provides excellent serviceability. Loads from the coil-overs transfer to the vehicle frame, not the suspension cradle.

The AME Multilink IRS Will Fit Most Of Our Chassis

The IRS will be available for just about everything we make, whether it is one of our GT Sport bolt-on chassis, custom builder’s chassis or a rear subframe. Available in 4 different track widths, there’s an application for just about every car out there. While there are many aftermarket IRS options available these days, the Multilink IRS is the first multi-link design and also the first IRS design that actually improves the cornering performance of the vehicle!

More Compact Version For Tighter Applications

Now, the engineering team at Art Morrison Enterprises has developed a more compact version of the Multi-Link IRS that utilizes key components from a Gen 5 Camaro and fits in a much tighter envelope. The cradle is 6-1/4″ shorter overall and 2-1/2″ lower from the axle centerline up than our original Multi-Link IRS. This allows an independent rear suspension to be used in many applications without the need to extensively modify the trunk’s sheet metal for clearance.

Available in four track widths: 55.5″, 57.5″, 59.5″ and 61.5″ (wheel mounting surface to surface width)

Lots of  Options Available

Available gear ratios are 3.27 and 3.45. Brake options include: 12.4″ rotor with floating caliper, Wilwood 14.3″ with W6A caliper or 14.4″ with OEM Brembo caliper. Minimum wheel size: 17″* with 12.4″ brake rotors, 18″ with Wilwood brakes.