What usage do you demand the most performance? This does not mean where it spends most of it's time, but your performance priority.
In a multi-use car, we need to know what your next priority is.
Whether now, or in the future, if measured on an engine dyno what would your ultimate power output?
If you have RWHP divide by 0.8 (Example: 470rwhp / 0.8 = 588bhp)
Our K-Member is the foundation of the Griggs Racing front suspension system, providing the correct geometry, with superior rigidty and the highest strength to weight ratio. For 40 years we have continued revising and improving our design as tires, downforce and brakes have substantially increased loads and demand on the K-Member structure.
We offer both Soft (Elastomer) and Solid (Aluminum or Steel) motor mounts depending on your usage. Solid mounts reduce movement of the engine and transmission assembly, increasing shifting precision and a degree of increase in chassis rigiditiy.
If you have a properly balanced engine assembly, including flywheel and clutch, solid mounts can be used on the street, although you may feel minor harmonic vibrations at lower RPMs (for V8 engines, this is usually around 2100 RPMs).
Mini-Towers provide attachment points to the frame for the upper shock mount and the upper control arm.
Tell us what tire compound you intend to use - this information will affect the overall balance of your car and the spring rates we suggest.
Tell us what front tire width you intend to use - this information will affect the overall balance of your car as well as the spring and anti-roll bar rates we suggest.
Based upon the narrow tire width you indicated, you might consider running a larger tire for enhanced performance.
If you do increase your front tire width, will need to do one of the following:
1) Modify your existing front fenders
2) Replace them with a wide fender option
If neither of these options are desirable, feel free to decline our suggestion.
Based upon the tire width you indicated, you will need to do one of the following:
1) Modify your existing front fenders
2) Replace them with a wide body option
If neither of these options are desirable, please return to the ""Select Tire Width"" step, using the button below and left to select a narrower tire width.
Required to adapt to OE design spindle.
All of our Spindle and Hub offerings can include ABS provision.
If you want ABS with your Aluminum Spindle and Aluminum Hub you will need this part.
High quality AN fittings, hose and adaptors to connect your powersteering pump to your rack and cooler.
Keep your power steering system cool under high loads, increasing life span and mitigating potential damage.
A Bumpsteer Kit is essentially a tie rod end set that is adjustabable in height. When properly adjusted, this helps negate steering angle changes during vertical motion of the suspension.
Select "Yes" if you are removing the majority of the interior, dash, and potentially replacing the pedals and steering column.
This is needed to prescribe correct spring rates.
High Speed tracks prioritize a less compliant chassis to limit travel due to more aerodynamics/downforce (e.g. Daytona, Road America, Road Atlanta, Watkins Glen, Willow Springs)
Low Speed tracks prioritize a more compliant chassis due to less aerodynamics/downforce effect (e.g. Laguna Seca, Limerock, Mid-Ohio, Sonoma Raceway)
High-grade progressive bumpstops you must install on the shocks.
Packers further limit jounce travel. These are used on cars with aluminum or other 2in drop spindles, helping to control splitter height and help protect low splitters from track contact damage.
Length is average for majority of Griggs built cars. Your length may need to be adjusted.
Made from easy machinable Delrin. 2in length.
Manufactured by one of the premium spring winders in the United States.
Spring Seat Bearings are installed in Coil-Over applications when a preload on the spring is required to attain ride height, or to facilitate rotation of the spring seat for corner weight adjustments. Required on some softer spring rates, and/or cars set to higher ride height than GR40 specification.
Duct that attaches to spindle to connect 3in Diameter hose. Does not include hose, fan, or bumper cover duct.
If you are upgrading your brakes at the same time as installing this system, select "Yes". Our Brake System Consultant will appear, clicking on it will open in a new tab while leaving one more step for your SLA Chassis System.
If you are not upgrading your brakes, we need to determine the caliper in use before we select the appropriate Brake Caliper adapter bracket, if needed.
This part is required to adapt your caliper to the chosen spindle.
"Pre-assemply means your system arrives fully assembled with all parts in place to save you much time, as it can be installed within minutes instead of hours. It also ensures perfect fit.
Requires palleting and truck shipment."