• inventory
    • Brake Systems
    • Chassis & Suspension
      • Chassis Components
      • Steering Components
      • Suspension Components
    • Engines
      • Car Engine
      • Crate Engines
        • Short Block Engines
      • Engine and Transmission Combos
      • Horizontal Engines
      • Vertical Shaft Engine For Sale
    • Exhaust
    • Generators
      • Commercial Generators
      • Generator Transfer Switch
      • Standby Generators
      • Generators, Marine Generators
      • Marine Generators
    • Ignitions & Electrical
    • Inboard and Sterndrives
    • Outboard Motors
      • Evinrude Outboard Motors
      • Honda Outboard Motors
      • Mercury Outboard Motors
      • Nissan Outboard Motors
      • Suzuki Outboards Motors
      • Tohatsu Outboard Prices
      • Yamaha Outboard Engines For Sale
    • Transmission and Drivetrain
      • Automatic Transmissions
      • Manual Transmissions
      • Engine Drives
    • Welding Machine
      • MIG Welders
      • Stick Welders For Sale
      • TIG Welders For Sale
  • OUR SERVICES
    • Boats and Outboards Services
    • Engine Services
    • Parts Request
    • Service Appointment
  • Customer Corner
    • Company
    • FAQ
    • Newsletter Signup
    • Our Videos
    • News & Events
  • Finance
    • Financial Department
    • Get Financed
  • Warranty
  • Dealer Info
    • Careers
    • Contact us
    • Customer Reviews
Login / Register
Search
Wishlist
0 items $0.00
Menu
0 items $0.00
Click to enlarge
Home Chassis & Suspension Suspension Components QA1 Rear MOD Coilover Conversion Systems RCK52475
Mopar Performance Suspension Lift Kits 77072395AG
Mopar Performance Suspension Lift Kits 77072395AG $1,866.00
Back to products
Detroit Speed Inc Suspension Handling Packages 041753-SDS
Detroit Speed Inc Suspension Handling Packages 041753-SDS $2,762.00

QA1 Rear MOD Coilover Conversion Systems RCK52475

$1,266.00

KIT, PRO-COIL, REAR, ALUMINUM, MOD, 97-13 CORVETTE, 7-700 X 2.25″ ID

Compare
Add to wishlist
Category: Suspension Components
Share:
  • Description
  • Shipping & Delivery
Description

Overview

Brand: QA1
Manufacturer’s Part Number: RCK52475
Part Type: Coilover Kits
Product Line: QA1 Rear MOD Coilover Conversion Systems
Summit Racing Part Number: QA1-RCK52475
UPC: 806990163950
Coilover Kit Position: Rear
Adjustable Valving: Yes
Number of Valving Selections: 324
Shocks Included: Yes
Internal Design: Twin-tube
Coilover Springs Included: Yes
Spring Rate (lbs/in.): 700 lbs./in.
Suspension Height Adjustment: 0.5-2.25 in. lowered
Gas Charged: Yes
Upper Mount: T-bar
Lower Mount: Clevis
Body Diameter (in.): 3.000
Shock Body Material: Aluminum
Shock Body Finish: Black anodized
Bushing Material: Spherical bearing
Bushing Color: Black
Spring Finish: Black
Crossmember Included: No
Adjustable Mounting Bracket Included: No
Hardware Included: Yes
Welding Required: No
Quantity: Sold as a pair.
Notes: Models with electronic ride control require real time damping simulators.

QA1 Rear MOD Coilover Conversion Systems

QA1 MOD Series coilover conversion systems put the ability to re-valve your shocks—on your car—into the palm of your hand. These innovative shocks feature QuickTune Technology, an industry-first that provides the ability to adapt to any track, any conditions, any time. The technology consists of interchangeable, dry modular valve pack assemblies, that can be thought of as dozens of finely tuned shocks you can hold in the palm of your hand. They define the valving curve of the shocks, and can be changed without interrupting the oil pathways. Simply unscrew from the shock, bolt-in another one with a new pre-determined valving range—and you’re ready to go. There’s no mess, no contamination, no air intrusion, and no downtime waiting on someone to re-valve your shocks. Ideal for Circle Track and Street/Strip applications, the shocks are available in a variety of extended and collapsed length models to best fit your vehicle. You get everything you need with these QA1 Rear MOD systems, from shocks to nuts and bolts, complete installation instructions, and even decals!

Additional benefits and features of QA1 MOD Series shocks:

* All new design delivers force, control, and unmatched tenability
* Hard anodized aluminum bodies with PTFE—durable, non-galling surface
* Double-adjustable shocks with low-speed bleed adjustments
* Large solid piston (with blow-off valve)—improved driver feel and control with up to 1,600 lb. force
* High-speed valving adjustment (coarse adjustment)—relates to shock operation during impact events, like hitting a pothole or curb
* 24 clicks/settings—wider range of adjustment than comparable shocks
* Indexable base eyelet—multiple mounting position to optimize knob access and provide more mounting flexibility
* Low-speed valving (fine-tune adjustments)—adjusts ride quality and weight transfer on corner entry/exit; more bleed for softer feel and less bleed for stiffer feel
* Piggyback or remote canister options
* Unique spring adjuster nut and tool
* Thrust bearings included
* Superior thermal performance, as oil is in constant contact with outer body
* One base shock can be upgraded over time to keep up with increased performance levels of your vehicle

Shipping & Delivery
wd-ship-1
wd-ship-2

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.

Related products

McGaughy’s Black SS Suspension Lift Kits 50797

Suspension Components
$1,835.00
Add to cart
Compare
Quick view
Add to wishlist

McGaughy’s Suspension Lift Kits 52456

Suspension Components
$1,935.00
Add to cart
Compare
Quick view
Add to wishlist

QA1 1963-72 C10 Coilover Conversion Systems 52622-S650

Suspension Components
$2,875.00
Add to cart
Compare
Quick view
Add to wishlist

QA1 1988-98 C1500 Level 3 Front Coilover Conversion Systems 52613-D600

Suspension Components
$1,850.00
Add to cart
Compare
Quick view
Add to wishlist

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

Suspension Components
$1,745.00
Add to cart
Compare
Quick view
Add to wishlist

QA1 Level 2 Big Wheel Kits BW02-GMB4

Suspension Components
$3,217.00
Add to cart
Compare
Quick view
Add to wishlist

QA1 Level 2 Big Wheel Kits BW02-GMB5

Suspension Components
$2,989.00
Add to cart
Compare
Quick view
Add to wishlist

QA1 Level 2 Handling Suspension Kits HK22-GMF1

Suspension Components
$1,497.00
Add to cart
Compare
Quick view
Add to wishlist

    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
    Recent Posts
    • Commercial Mower Engine Maintenance Checklist
      Commercial Mower Engine Maintenance Checklist | Pro Landscaper Guide
      October 27, 2025 No Comments
    • Godzilla Platform
      Big-Inch Pushrod V8s: Why the Ford Godzilla Platform is a Game Changer
      October 27, 2025 No Comments
    Our stores
    • New York
    • London SF
    • Edinburgh
    • Los Angeles
    • Chicago
    • Las Vegas
    USEFUL LINKS
    • Privacy Policy
    • Returns
    • Terms & Conditions
    • Contact Us
    • Latest News
    • Shipping Policy
    Footer Menu
    • Financial Department
    • Get Financed
    • Parts Request
    • Service Appointment
    • Warranty
    • Careers
    X Factors Motorsports. 2025 Power By Partners Title SC LLC..
    payments
    • inventory
      • Brake Systems
      • Chassis & Suspension
        • Chassis Components
        • Steering Components
        • Suspension Components
      • Engines
        • Car Engine
        • Crate Engines
          • Short Block Engines
        • Engine and Transmission Combos
        • Horizontal Engines
        • Vertical Shaft Engine For Sale
      • Exhaust
      • Generators
        • Commercial Generators
        • Generator Transfer Switch
        • Standby Generators
        • Generators, Marine Generators
        • Marine Generators
      • Ignitions & Electrical
      • Inboard and Sterndrives
      • Outboard Motors
        • Evinrude Outboard Motors
        • Honda Outboard Motors
        • Mercury Outboard Motors
        • Nissan Outboard Motors
        • Suzuki Outboards Motors
        • Tohatsu Outboard Prices
        • Yamaha Outboard Engines For Sale
      • Transmission and Drivetrain
        • Automatic Transmissions
        • Manual Transmissions
        • Engine Drives
      • Welding Machine
        • MIG Welders
        • Stick Welders For Sale
        • TIG Welders For Sale
    • OUR SERVICES
      • Boats and Outboards Services
      • Engine Services
      • Parts Request
      • Service Appointment
    • Customer Corner
      • Company
      • FAQ
      • Newsletter Signup
      • Our Videos
      • News & Events
    • Finance
      • Financial Department
      • Get Financed
    • Warranty
    • Dealer Info
      • Careers
      • Contact us
      • Customer Reviews
    • Wishlist
    • Compare
    • Login / Register
    Shopping cart
    Close
    Sign in
    Close

    Lost your password?

    No account yet?

    Create an Account
    Start typing to see products you are looking for.
    Shop
    Wishlist
    0 items Cart
    My account