Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Qa1

QA1 64-66 Ford Mustang Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Aluminum

SKU: QAPMS401-10450C

Coilover Kits

QAP Coil-Overs - Pro Coil...

Qa1

QA1 64-66 Ford Mustang Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Aluminum

SKU: QAPMS401-10450C

Coilover Kits

QAP Coil-Overs - Pro Coil...

A$2,038.16
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Transform your classic Mustang’s suspension with QA1’s Pro Coil System. Designed for 1964–1966 Mustangs, this single adjustable coilover kit offers modern ride quality, handling, and stance adjustability in an easy bolt-in package. Featuring a 10” coil spring with a 450 lb./in. rate, this system is ideal for drivers who want a firmer ride and enhanced cornering performance without going to a full track setup. MODERN HANDLING & CONTROL Stock suspensions were never built for today’s performance demands. With QA1’s single adjustable coilovers, you can fine-tune rebound and compression together across 18 settings. A single adjustment knob makes it easy to soften the ride for the street or firm it up for more spirited driving. RIDE HEIGHT FLEXIBILITY Get the stance you want without sacrificing drivability. This system allows you to adjust ride height from factory stock height down to 2” lower, perfect for dialing in wheel/tire fitment or achieving a more aggressive look. EASY BOLT-IN INSTALLATION No welding or cutting required. QA1 Pro Coils are designed as direct bolt-in replacements for factory, or QA1 tubular components, making them one of the easiest suspension upgrades you can install at home.

Product Overview

QA1 Pro Coil Systems for 1964-1973 Mustangs are a great option for anyone looking for fully adjustable ride height and valving control. Choose a spring rate and adjustability that fits your driving style, adjust the valving to match, and you are on your way. These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling. Adjustable Pro Coil System Features:, Available in independent compression and rebound double adjustable, simultaneous compression and rebound single adjustable, or drag "R" Series adjustable, Lightweight Billet Aluminum Coil-Over Shocks, High Travel Springs, Easy, Bolt-In Installation, Ride Height Adjustable, 100% Dyno Tested and Serialized, Serviceable and Rebuildable by QA1 Authorized Service Centers, Made in the USA, Used in drag racing, street performance, autocross, road racing and street rod applications, Sold in Pairs


Features and Benefits

  • Lightweight Billet Aluminum Coil-Over Shocks
  • Made in the USA
  • Easy, bolt-In Installation
  • Ride Height Adjustable
  • 100% Dyno Tested and Serialized
  • Serviceable and Rebuildable by QA1 Authorized Service Centers

Product Details

Active or Passive Suspension:Passive
Adjustable Compression:Yes
Adjustable Rebound:Yes
Adjustable Ride Height:Yes
Assembled:No
Brand:QA1
Description:QA1 64-66 Ford Mustang Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Aluminum
Grade Type:Performance
Internal Construction Type:Dual Tube
Manufacturer Part Number:MS401-10450C
Part Number:qapMS401-10450C
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Remote Reservoir:No
Spring Color:Silver
Spring Material:High Tensile Chrome Silicon
Title:QA1 Pro Coil Shock Kit MS401-10450C
UPC:806990158505

Part Type

Coilover Set

Data: v4.2 - Upd: 2026-10-15 00:27:38

Features

  • Adjustable ride height: factory to –2”
  • Application-specific fit for 1964–1966 Ford Mustangs
  • Complements QA1 tubular control arms and sway bars for a full suspension upgrade
  • Direct bolt-in installation - no welding required
  • Includes 10” coil springs with a 450 lb./in. spring rate
  • Powder-coated springs and premium hardware for durability
  • Single adjustable shocks with 18 rebound/compression settings

Specifications

Product Attributes - Brand
QA1
Product Attributes - Manufacturer's Part Number
MS401-10450C
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Pro Coilover Systems
Product Attributes - UPC
806990158505
Product Attributes - Coilover Kit Position
Front
Product Attributes - Adjustable Valving
Yes
Product Attributes - Number of Valving Selections
18
Product Attributes - Shocks Included
Yes
Product Attributes - Internal Design
Twin-tube
Product Attributes - Coilover Springs Included
Yes
Product Attributes - Spring Rate (lbs/in.)
450 lbs./in.
Product Attributes - Suspension Height Adjustment
0.0-2.0 in. lowered
Product Attributes - Gas Charged
No
Product Attributes - Upper Mount
Eyelet
Product Attributes - Lower Mount
Tie bar
Product Attributes - Shock Body Material
Aluminum
Product Attributes - Shock Body Finish
Silver
Product Attributes - Bushing Material
Polyurethane
Product Attributes - Bushing Color
Black
Product Attributes - Spring Finish
Gray/Silver
Product Attributes - Crossmember Included
No
Product Attributes - Adjustable Mounting Bracket Included
No
Product Attributes - Hardware Included
Yes
Product Attributes - Welding Required
No
Product Attributes - Quantity
Sold as a pair.
Product Attributes - Notes
Coilover shocks are single adjustable Mustang MS401 shocks. Springs are 10 in. tapered with a large diameter, flat upper end style 10HTBF450 springs.

Reference Information

Brand Name/s Qa1
StreetFX SKU qapMS401-10450C
SFX Item ID 4094927
Supplier Item Code 4094927
Manufacturer SKU MS401-10450C
Manufacturer UPC 806990158505
Alternative References qa1, QA1-MS401-10450C, 10in, 450lbs/in

Brochures

Compatibility

Loading compatibility information...

Keep shopping

More from Qa1