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Home Chassis & Suspension Suspension Components Heidts Pro-G Independent Rear Suspension Kits IRC-820
QA1 Level 2 Handling Suspension Kits HK22-CRA2
QA1 Level 2 Handling Suspension Kits HK22-CRA2 $5,125.00
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QA1 Level 2 Handling Suspension Kits HK22-CRE1
QA1 Level 2 Handling Suspension Kits HK22-CRE1 $5,644.00

Heidts Pro-G Independent Rear Suspension Kits IRC-820

$6,445.00

Rear Suspension Packages, Pro-G IRS, Third Member, Ford 9 in. Case Style, Axle Shafts, 33-spline, Dodge, Each

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Category: Suspension Components
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Description

Overview

Brand: Heidts
Manufacturer’s Part Number: IRC-820
Part Type: Rear Suspension Packages
Product Line: Heidts Pro-G Independent Rear Suspension Kits
Summit Racing Part Number: HDT-IRC-820
Third Member Included: Yes
Third Member Case Style: Ford 9 inch
Axle Shafts Included: Yes
Axle Shaft Spline Quantity: 33
Upper Control Arms Included: Yes
Lower Control Arms Included: Yes
Control Arm Style: Tubular
Control Arm Material: Steel
Control Arm Color: Natural
Air Bags Included: No
Rear Shocks/Struts Included: Yes
Rear Shock Type: Single adjustable coilover
Coilover Springs Included: Yes
Spring Finish: Gray/Silver
Suspension Package Finish: Bare
Bushings Included: Yes
Bushing Material: Polyurethane
Bushing Color: Black
Sway Bar Included: No
Watts Link Included: No
Panhard Bar Included: No
Adjustable Panhard Bar Included: No
Upper Trailing Arms Included: No
Adjustable Upper Trailing Arms Included: No
Lower Trailing Arms Included: No
Adjustable Lower Trailing Arms Included: No
Trailing Arm Mount Braces Included: No
Trailing Arm Hardware Included: No
Rotors Included: No
Calipers Included: No
Quantity: Sold individually.
Notes: Specify gear ratio and spring rate when ordering.

Heidts Pro-G Independent Rear Suspension Kits

Heidts Pro-G IRS suspension kits are designed to bring the superior ride and handling of independent rear suspension to your muscle car. Out-handle the competition and put all of that horsepower to the ground. Heidts Pro-G IRS suspension kits produce 1/2 degree of camber curve at 3/4 of bump, especially during very high cornering loads.

Features include:

* Cast iron Ford 9 in. center section mounted in an aluminum housing
* 31-spline posi-traction hooked up to heavy-duty half shaft CV joint axle shafts
* Tubular upper and lower control arms
* Steel outer uprights
* Top crossmember
* Frame mounting brackets
* Wilwood rear brake rotors and calipers
* Billet aluminum single adjustable coilover shocks with silver powdercoated springs

Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

    • 1204 E Yorba Linda Blvd, Placentia, CA 92870, USA
    • Phone: +1 (714) 694-3374
    • E-mail: sales@xfactorsmotorsports.com
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