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Home Chassis & Suspension Suspension Components QA1 1988-98 C1500 Rear Coilover Conversion Systems R140-170
RideTech 1955-57 Chevrolet Coilover Suspension Systems 11030201
RideTech 1955-57 Chevrolet Coilover Suspension Systems 11030201 $3,429.00
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QA1 1963-72 C10 Coilover Conversion Systems 52622-S650
QA1 1963-72 C10 Coilover Conversion Systems 52622-S650 $2,875.00

QA1 1988-98 C1500 Rear Coilover Conversion Systems R140-170

$1,745.00

Suspension Package, Rear Coilover Conversion System, Single Adjustable, 170 lbs./in. Spring Rate, 4-7 in. Drop, Chevy, GMC, Kit

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Category: Suspension Components
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Description

Overview

Brand: QA1
Manufacturer’s Part Number: R140-170
Part Type: Rear Suspension Packages
Product Line: QA1 1988-98 C1500 Rear Coilover Conversion Systems
Summit Racing Part Number: QA1-R140-170
UPC: 806990158932
Third Member Included: No
Axle Shafts Included: No
Upper Control Arms Included: No
Lower Control Arms Included: No
Air Bags Included: No
Rear Shocks/Struts Included: Yes
Rear Shock Type: Single adjustable coilover
Coilover Springs Included: Yes
Coilover Spring Rate (lbs/in): 170 lbs./in.
Spring Finish: Gray/Silver
Suspension Package Finish: Black powdercoated
Bushings Included: No
Sway Bar Included: No
Watts Link Included: No
Panhard Bar Included: Yes
Adjustable Panhard Bar Included: Yes
Adjustable Panhard Bar Type: On car adjustable
Upper Trailing Arms Included: No
Adjustable Upper Trailing Arms Included: No
Lower Trailing Arms Included: Yes
Adjustable Lower Trailing Arms Included: Yes
Adjustable Lower Trailing Arms Type: On car adjustable
Trailing Arm Mount Braces Included: Yes
Trailing Arm Hardware Included: Yes
Rotors Included: No
Calipers Included: No
Quantity: Sold as a kit.
Notes: For 4.000-7.000 in. of rear drop. Fit models with 10-bolt rear differentials only.

QA1 1988-98 C1500 Rear Coilover Conversion Systems

QA1 1988-98 C1500 rear coilover conversion systems are a great upgrade to your C1500 suspension. Each kit comes with QA1’s proven adjustable coilover shocks—so you can change the valving to meet your specific needs—along with a variety of spring rate options. These shocks allow for ride height adjustability and are 100 percent dyno-tested and serialized. The QA1 C1500 torque arm suspension with C-notch bracket is manufactured from 12-gauge HSLA steel tubing for increased strength and powdercoated for long-lasting durability. Systems come complete with adjustable instant center, panhard bar, and pinion angle to allow you to adjust the system to your exact needs. This easy bolt-on kit will add more stability and allows for optimum camber adjustment in a lowered truck. Everything needed is included, all the way down to the hardware; no welding or bed removal required.

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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.

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