• Home
  • INVENTORY
    • ALL INVENTORY
      • BOAT INVENTORY
      • ENGINE DRIVERS
      • GOLF CARTS INVENTORY
      • MOTOCYCLE INVENTORY
      • OUTBOARD INVENTORY
      • POWER EQUIPMENT
      • PRE-OWNED INVENTORY
      • USED OUTBOARD MOTORS
      • WELDING
      • MIXED USED OUTBOARD MOTOR
    • BOAT INVENTORY effects
      • AB INFLATABLE BOATS
      • AVON BOATS
      • ACHILLES INFLATABLE BOATS
      • BARLETTA BOATS
      • FLEXBOAT
      • MERCURY BOATS
      • NITRO BOATS
      • RANGER BOATS
      • REFLEX BOATS
      • REGENCY BOATS
      • SUN TRACKER BOATS
      • TAHOE BOATS
      • ZODIAC BOATS
    • OUTBOARD INVENTORY Unlimited
      • EVINRUDE OUTBOARDS
      • HONDA OUTBOARDS
      • MERCURY OUTBOARDS
      • SUZUKI OUTBOARDS
      • TOHATSU OUTBOARDS
      • TORQEEDO OUTBOARDS New
      • YAMAHA OUTBOARDS
    • USED OUTBOARD MOTORS
      • HONDA OUTBOARD MOTORS
      • EVINRUDE OUTBOARD MOTORS
      • YAMAHA OUTBOARD MOTORS
      • TOHATSU OUTBOARD MOTORS
      • SUZUKI OUTBOARD MOTORS
      • NISSAN OUTBOARD MOTORS
    • Snow Blowers
      • SINGLE STAGE SNOW BLOWERS
      • 2-STAGE SNOW BLOWERS
      • 3-STAGE SNOW BLOWERS
    • WELDING
      • MIG Welders
      • TIG WELDERS
      • STICK WELDERS
  • OUR SERVICES
    • BOATS AND OUTBOARDS SERVICES
    • SERVICE
    • SERVICE APPOINTMENT
    • PARTS REQUEST
  • Brand
    • TYPES OF BRANDS
    • BOAT BRANDS
    • OUTBOARD BRANDS
  • Financing
    • FINANCE
    • GET A QUOTE
    • GLOBAL MARINE INSURANCE
  • Customer Corner
    • NEWSLETTER SIGNUP
    • READ TESTIMONIALS
    • FAQ
    • ABOUT US
    • OUR VIDEOS
    • PHOTOS
    • BLOG
    • OUTBOARD MOTORS FOR SALE
  • Contact us
Login / Register
Search
Wishlist
19 items $44,165.59
Menu
19 items $44,165.59
“9 Inch Ford Rear Axle Kit w/Posi 3rd Member, 56 Inch.” has been added to your cart. View cart
“9 Inch Ford Rear Axle Kit w/Posi 3rd Member, 56 Inch.” has been added to your cart. View cart
Click to enlarge
Home Car Chassis & Suspension Kits QA1 Mopar Rear Coilover Conversion Systems R155-175
QA1 Mopar Front Street Performance Coilover Conversion Systems 52347-S400
QA1 Mopar Front Street Performance Coilover Conversion Systems 52347-S400 $3,200.00
Back to products
Scott's Hot Rods IFS Packages 11-4854-1L
Scott's Hot Rods IFS Packages 11-4854-1L $2,399.00

QA1 Mopar Rear Coilover Conversion Systems R155-175

$1,199.00

✔ Triangulated 4-Link Suspension for Improved Launch & Handling
✔ Coilover System with Adjustable Ride Height & Dampening
✔ Supports Mopar 8 3/4″, Ford 9″, and Dana 60 Axles
✔ Easy Installation with Minimal Welding Required
✔ Designed for Pro-Touring, Road Racing, Street & Drag Use
✔ Allows Clearance for 3″ Over-the-Axle Exhaust
✔ Corrects Wheelbase for Larger Wheels & Tires

💡 Get modern handling and a smoother ride while keeping the power and style of your classic Mopar!

16 in stock

Compare
Add to wishlist
Category: Car Chassis & Suspension Kits
Share:
  • Description
  • Reviews (0)
  • Shipping & Delivery
Description

🔥 QA1 Mopar Rear Coilover Conversion System – Upgrade Your Classic Mopar’s Suspension!

The QA1 Mopar Rear Coilover Conversion System (R155-175) is an all-in-one solution to transform your classic Mopar A, B, or E-Body muscle car into a high-performance machine. This bolt-in triangulated 4-link rear suspension setup improves launch traction, ride comfort, and adjustability, giving you the perfect stance and modern handling feel.

🔧 Designed for street performance, autocross, drag racing, and pro-touring applications!

🔥 Perfect for classic Mopar owners who want better suspension geometry and adjustability!


🔹 What’s Included in the Kit?

✅ Rear Coilover Shocks (Single Adjustable) – Tune your suspension for ride comfort or performance
✅ 175 lbs./in. Coilover Springs – Optimized for street & track driving
✅ Adjustable Upper & Lower Trailing Arms – Dial in wheelbase, traction, and handling
✅ Trailing Arm Mount Braces & Hardware – Reinforces chassis for added stability
✅ Clearance for 3” Over-the-Axle Exhaust – No need to modify your exhaust system
✅ Supports Standard & Inboard Spring Locations – More flexibility in suspension setup

🚀 Upgrade your Mopar’s rear suspension with modern 4-link geometry and coilover adjustability!


🔹 Technical Specifications

Feature Details
Brand QA1
Manufacturer Part # R155-175
Product Type Rear Coilover Conversion System
Suspension Design Triangulated 4-Link
Rear Shocks Included? ✅ Yes (Single Adjustable Coilovers)
Coilover Spring Rate 175 lbs./in.
Spring Finish Black
Suspension Finish Black Powdercoated
Bushings Included? ✅ Yes (Spherical Bearings)
Adjustable Upper Trailing Arms? ✅ Yes (Double Adjustable)
Adjustable Lower Trailing Arms? ✅ Yes (Single Adjustable)
Supports Axles Mopar 8 3/4″, Ford 9″, Dana 60
Ride Height Adjustment? Yes
Exhaust Clearance? Yes (3” Over-the-Axle Clearance)
Installation Type Bolt-On (Minimal Welding Required)
Sway Bar Included? ❌ No (Optional Add-On)
Panhard Bar Included? ❌ No
Quantity Sold as a Complete Kit

⚡ Achieve modern performance while keeping your Mopar’s classic style!


🔹 Fitment & Compatibility

✔ Designed for Classic Mopar A, B, & E-Body Vehicles
✔ Compatible with Mopar 8 3/4″, Ford 9″, and Dana 60 Rear Differentials
✔ Works with Standard & Inboard Spring Locations
✔ Supports Large Wheels & Tires with Wheelbase Adjustments

💡 Ideal for both street and track builds!


🔹 Installation Notes & Tips

🔧 Minimal welding required – Mostly bolt-in for easier installation
⚙️ Provides better suspension geometry & weight distribution
🔩 Allows fine-tuning of pinion angle & wheelbase for maximum performance
🛠 For best results, pair with QA1’s front coilover conversion system

⚠️ Professional installation recommended for optimal performance!


❓ Frequently Asked Questions (FAQ)

🔹 How does this system improve handling?

  • The triangulated 4-link design and coilover shocks enhance traction, stability, and ride comfort, reducing wheel hop and increasing control during acceleration and cornering.

🔹 What rear axle does this kit support?

  • This kit is designed to work with Mopar 8 3/4″, Ford 9″, and Dana 60 rear axles.

🔹 Do I need to modify my exhaust?

  • No! This kit is designed with 3” over-the-axle exhaust clearance, so you won’t need to alter your existing exhaust system.

🔹 Is welding required?

  • Minimal welding is needed. Most components bolt directly into place for easier installation.

🔹 Can I install this kit myself?

  • Yes, if you have experience with suspension work. Otherwise, professional installation is recommended for best results.

🔹 Does this kit include a sway bar?

  • No, but an optional rear sway bar is available separately for added stability and cornering performance.

🔥 Call to Action – Upgrade Your Classic Mopar Today!

🏆 Transform your Mopar’s rear suspension for modern performance and adjustability!

✔ Triangulated 4-Link Suspension for Maximum Control
✔ Adjustable Coilovers for Custom Ride Height & Handling
✔ Compatible with Multiple Axles & Large Wheel/Tire Combos
✔ Bolt-In Installation with Minimal Welding Required

🛒 Order Now & Experience the Ultimate Rear Suspension Upgrade for Your Mopar! 🚀

Overview

Brand:
QA1
Manufacturer’s Part Number:
R155-175
Part Type:
Rear Suspension Packages
Product Line:
QA1 Mopar Rear Coilover Conversion Systems
Summit Racing Part Number:
QA1-R155-175
UPC:
806990163134
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):
175 lbs./in.
Spring Finish:
Black
Suspension Package Finish:
Black powdercoated
Bushings Included:
Yes
Bushing Material:
Spherical bearing
Sway Bar Included:
No
Watts Link Included:
No
Panhard Bar Included:
No
Adjustable Panhard Bar Included:
No
Upper Trailing Arms Included:
Yes
Adjustable Upper Trailing Arms Included:
Yes
Adjustable Upper Trailing Arms Type:
Double adjustable
Lower Trailing Arms Included:
Yes
Adjustable Lower Trailing Arms Included:
Yes
Adjustable Lower Trailing Arms Type:
Single adjustable
Trailing Arm Mount Braces Included:
Yes
Trailing Arm Hardware Included:
Yes
Rotors Included:
No
Calipers Included:
No
Quantity:
Sold as a kit.
Notes:
Kit for use with Mopar 8 3/4 and Ford 9 in. rear differentials.
Reviews (0)

Reviews

There are no reviews yet.

Be the first to review “QA1 Mopar Rear Coilover Conversion Systems R155-175”
Review now to get coupon!

Your email address will not be published. Required fields are marked *

Shipping & Delivery

Related products

Compare
Quick view
Add to wishlist
Add to cart

RideTech 11360297 Air Suspension System, 73-87 C10

Car Chassis & Suspension Kits
$6,100.00
Compare
Quick view
Add to wishlist
Add to cart

QA1 52624 Crossmember Retrofit Kit, 1963-1972 Chevy C10 Truck

Car Chassis & Suspension Kits
$2,000.00
Compare
Quick view
Add to wishlist
Add to cart

QA1 HK22-GMF1 Handling Kit, Level 2, 67-69 GM F-Body, W/ Shocks

Car Chassis & Suspension Kits
$2,500.00
Compare
Quick view
Add to wishlist
Add to cart

Winters Grand National Quick Change Rear End-Outlaw Modifieds-Complete

Car Chassis & Suspension Kits
$2,100.00
Compare
Quick view
Add to wishlist
Add to cart

Winters Performance 8021037 Spiral Bevel Sprint Car Rear End

Car Chassis & Suspension Kits
$1,700.00
Compare
Quick view
Add to wishlist
Add to cart

UMI ABF803-1-R 68-72 A-Body Stage 2 Kit, 1 Inch Lowering, Red

Car Chassis & Suspension Kits
$2,500.00
Compare
Quick view
Add to wishlist
Add to cart

Winters Performance SR2550STB SR2980 Nostalgia V8 Quickchange, Plain

Car Chassis & Suspension Kits
$3,011.00
Compare
Quick view
Add to wishlist
Add to cart

RideTech 12087197 Heim Version, Bolt-On 4-Link, 64-70 Mustang

Car Chassis & Suspension Kits
$1,679.00
X-Factor

Welcome to X Factors Motors, your trusted source for top-quality outboard motors, boats, welding machines, and more. With a legacy spanning a decade, we take pride in being a leading name in the industry, delivering excellence and innovation to our valued customers.

  • 2007 E Orangethorpe Ave, Placentia, CA 92870
  • Phone: +1 (920) 825-2512
  • E-mail: [email protected]
Recent Posts
  • 🚤 How to Extend the Lifespan of Your Outboard Motor (Ultimate Guide)
    March 20, 2025 No Comments
  • 🚤 Best Outboard Motor Brands: Which One Should You Buy? (2025 Guide)
    March 20, 2025 No Comments
Our stores
  • BOAT INVENTORY
  • ENGINE DRIVES
  • OUTBOARD INVENTORY
  • POWER EQUIPMENT
  • WELDING
  • USED OUTBOARD MOTORS
USEFUL LINKS
  • Privacy Policy
  • Returns
  • Terms & Conditions
  • Shipping Policy
  • Warranty & Documents
  • Our Sitemap
Footer Menu
  • PARTS REQUEST
  • GET A QUOTE
  • BOAT BRANDS
  • OUTBOARD BRANDS
  • SERVICE
  • NEWSLETTER SIGNUP
X Factors Motors 2024 | All Rights Reserved.
payments
  • Menu
  • Categories
  • BOAT INVENTORY
    • AB INFLATABLE BOATS
    • ACHILLES INFLATABLE BOATS
    • AVON BOATS
    • BARLETTA BOATS
    • FLEXBOAT
    • MERCURY BOATS
    • NITRO BOATS
    • RANGER BOATS
    • REFLEX BOATS
    • REGENCY BOATS
    • SUN TRACKER BOATS
    • TAHOE BOATS
    • ZODIAC BOATS
  • Engine Drives
  • GOLF CARTS INVENTORY
  • MIG Welders
  • OUTBOARD INVENTORY
    • EVINRUDE OUTBOARDS
    • HONDA OUTBOARDS
    • MERCURY OUTBOARDS
    • SUZUKI OUTBOARDS
    • TOHATSU OUTBOARDS
    • TORQEEDO OUTBOARDS
    • YAMAHA OUTBOARDS
  • POWER EQUIPMENT
  • PRE-OWNED INVENTORY
  • SNOW BLOWERS
    • SINGLE STAGE SNOW BLOWERS
    • 2-STAGE SNOW BLOWERS
    • 3-STAGE SNOW BLOWERS
  • Stick Welders
  • TIG Welders
  • TRAILER INVENTORY
  • Uncategorized
  • USED OUTBOARD MOTORS
    • Evinrude Outboard Motors
    • Honda Outboard Motors
    • Mercury Outboard Motors
    • Mixed Used Outboard Motor
    • Nissan Outboard Motors
    • Suzuki Outboard Motors
    • Tohatsu Outboard Motors
    • Yamaha Outboard Motors
  • Welding
  • Home
  • OUR SERVICES
    • SERVICE
    • BOATS AND OUTBOARDS SERVICES
    • PARTS REQUEST
    • SERVICE APPOINTMENT
  • BRANDS
    • BOAT BRANDS
    • OUTBOARD BRANDS
    • TYPES OF BRANDS
  • FINANCING
    • FINANCE
    • GET A QUOTE
    • GLOBAL MARINE INSURANCE
  • CUSTOMER CORNER
    • ABOUT US
    • BLOG
    • FAQ
    • NEWSLETTER SIGNUP
    • OUR VIDEOS
    • OUTBOARD MOTORS FOR SALE
    • PHOTOS
    • READ TESTIMONIALS
  • Contact us
  • 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.
5
Rated 5 out of 5
0%
4
Rated 4 out of 5
0%
3
Rated 3 out of 5
0%
2
Rated 2 out of 5
0%
1
Rated 1 out of 5
0%
With images (0) Verified (0)
All stars(0)
  • All stars(0)
  • 5 stars(0)
  • 4 stars(0)
  • 3 stars(0)
  • 2 stars(0)
  • 1 star(0)
Shop
Wishlist
19 items Cart
My account