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Qa1

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

SKU: QAPMD401-10450C

Coilover Kits

QAP Coil-Overs - Pro Coil...

Qa1

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

SKU: QAPMD401-10450C

Coilover Kits

QAP Coil-Overs - Pro Coil...

A$2,300.59
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.
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Description

Unlock maximum performance and adjustability for your classic Mustang with QA1’s Pro Coil System. Designed specifically for 1964–1966 Mustangs, this double adjustable coilover kit gives you total control over ride quality, stance, and handling. Featuring 10” coil springs with a 450 lb./in. spring rate, this setup is perfect for aggressive street performance and track-style handling. COMPLETE TUNING CONTROL QA1 double adjustable shocks provide independent rebound and compression adjustment, with 18 clicks each. This lets you precisely tune how your Mustang responds to bumps, body roll, and cornering forces. Whether you’re dialing in settings for cruising, carving corners, or competition driving, you’ll have full suspension control at your fingertips. CUSTOMIZABLE RIDE HEIGHT Achieve the stance you want with ride height adjustment from factory stock height down to 2” lower. Perfect for lowering your Mustang for a more aggressive look or fine-tuning ride height to match wheels, tires, or handling preferences. EASY BOLT-IN INSTALLATION No cutting. No welding. The QA1 Pro Coil System bolts directly into place, making it a straightforward upgrade that delivers modern suspension performance without fabrication.

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 - Double Adj. - 10in x 450lbs/in - Aluminum
Grade Type:Performance
Internal Construction Type:Dual Tube
Manufacturer Part Number:MD401-10450C
Part Number:qapMD401-10450C
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 MD401-10450C
UPC:806990158659

Part Type

Coilover Set

Data: v4.2 - Upd: 2026-10-15 00:27:43

Features

  • Application-specific fit for 1964–1966 Ford Mustangs
  • Direct bolt-in installation - no welding required
  • Double adjustable shocks with 18 clicks each for rebound and compression
  • Includes 10” coil springs with a 450 lb./in. spring rate
  • Premium powder-coated springs and durable hardware
  • Ride height adjustable: factory to –2”
  • Works seamlessly with QA1 tubular control arms and sway bars

Specifications

Product Attributes - Brand
QA1
Product Attributes - Manufacturer's Part Number
MD401-10450C
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Pro Coilover Systems
Product Attributes - UPC
806990158659
Product Attributes - Coilover Kit Position
Front
Product Attributes - Adjustable Valving
Yes
Product Attributes - Number of Valving Selections
324
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 double adjustable Mustang MD401 shocks. Springs are 10 in. tapered with a large diameter, flat upper end style 10HTBF450 springs.

Reference Information

Brand Name/s Qa1
StreetFX SKU qapMD401-10450C
SFX Item ID 4094598
Supplier Item Code 4094598
Manufacturer SKU MD401-10450C
Manufacturer UPC 806990158659
Alternative References qa1, QA1-MD401-10450C, 10in, 450lbs/in

Brochures

Compatibility

Application Data
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1964
    Ending Year1965
    Engine TypeL6
    CC2786
    CID170
    Liter2.8
    Engine Size2.8L/170
    Engine FamilyFORD L6 GAS
    DrivetrainRWD
    Engine VIN CodeU
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1964
    Ending Year1965
    Engine TypeV8
    CC4261
    CID260
    Liter4.3
    Engine Size4.3L/260
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeF
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1964
    Ending Year1965
    Engine TypeV8
    CC4727
    CID289
    Liter4.7
    Engine Size4.7L/289
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeD
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1964
    Ending Year1967
    Engine TypeV8
    CC4727
    CID289
    Liter4.7
    Engine Size4.7L/289
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeA
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1964
    Ending Year1967
    Engine TypeV8
    CC4727
    CID289
    Liter4.7
    Engine Size4.7L/289
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeK
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1964
    Ending Year1968
    Engine TypeV8
    CC4727
    CID289
    Liter4.7
    Engine Size4.7L/289
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeC
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1964
    Ending Year1970
    Engine TypeL6
    CC3277
    CID200
    Liter3.3
    Engine Size3.3L/200
    Engine FamilyFORD L6 GAS
    DrivetrainRWD
    Engine VIN CodeT
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1967
    Ending Year1969
    Engine TypeV8
    CC6391
    CID390
    Liter6.4
    Engine Size6.4L/390
    Engine FamilyFORD BIG BLOCK FE V8 GAS
    DrivetrainRWD
    Engine VIN CodeH
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1967
    Ending Year1969
    Engine TypeV8
    CC6391
    CID390
    Liter6.4
    Engine Size6.4L/390
    Engine FamilyFORD BIG BLOCK FE V8 GAS
    DrivetrainRWD
    Engine VIN CodeS
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1967
    Ending Year1969
    Engine TypeV8
    CC6391
    CID390
    Liter6.4
    Engine Size6.4L/390
    Engine FamilyFORD BIG BLOCK FE V8 GAS
    DrivetrainRWD
    Engine VIN CodeX
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1968
    Ending Year1968
    Engine TypeV8
    CID302
    Liter5.0
    Engine Size5.0L/302
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1968
    Ending Year1968
    Engine TypeV8
    CC6997
    CID427
    Liter7.0
    Engine Size7.0L/427
    Engine FamilyFORD BIG BLOCK FE V8 GAS
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1968
    Ending Year1970
    Engine TypeL6
    CC3278
    CID200
    Liter3.3
    Engine Size3.3L/200
    Engine FamilyFORD L6 GAS
    DrivetrainRWD
    Engine VIN CodeT
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1968
    Ending Year1970
    Engine TypeV8
    CC7014
    CID428
    Liter7.0
    Engine Size7.0L/428
    Engine FamilyFORD BIG BLOCK FE COBRA JET/SUPER CJ V8 GAS
    DrivetrainRWD
    Engine VIN CodeR
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1968
    Ending Year1973
    Engine TypeV8
    CID302
    Liter5.0
    Engine Size5.0L/302
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeF
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    CC7014
    CID428
    Liter7.0
    Engine Size7.0L/428
    Engine FamilyFORD BIG BLOCK FE V8 GAS
    DrivetrainRWD
    Engine VIN CodeP
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    CC7014
    CID428
    Liter7.0
    Engine Size7.0L/428
    Engine FamilyFORD BIG BLOCK FE V8 GAS
    DrivetrainRWD
    Engine VIN CodeQ
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    CC7030
    CID429
    Liter7.0
    Engine Size7.0L/429
    Engine FamilyFORD BOSS 429 V8 GAS
    DrivetrainRWD
    Engine VIN CodeZ
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1971
    Engine TypeV8
    CC5753
    CID351
    Liter5.8
    Engine Size5.8L/351
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeM
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1973
    Engine TypeL6
    CC4097
    CID250
    Liter4.1
    Engine Size4.1L/250
    Engine FamilyFORD L6 GAS
    DrivetrainRWD
    Engine VIN CodeL
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1973
    Engine TypeL6
    CC4098
    CID250
    Liter4.1
    Engine Size4.1L/250
    Engine FamilyFORD L6 GAS
    DrivetrainRWD
    Engine VIN CodeL
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1973
    Engine TypeV8
    CC5753
    CID351
    Liter5.8
    Engine Size5.8L/351
    Engine FamilyFORD CLEVELAND V8 GAS
    DrivetrainRWD
    Engine VIN CodeH
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1969
    Ending Year1973
    Engine TypeV8
    CC5753
    CID351
    Liter5.8
    Engine Size5.8L/351
    Engine FamilyFord small block Windsor
    DrivetrainRWD
    Engine VIN CodeH
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    CC5753
    CID351
    Liter5.8
    Engine Size5.8L/351
    Engine FamilyFORD CLEVELAND V8 GAS
    DrivetrainRWD
    Engine VIN CodeM
  • MakeFORD
    ModelMUSTANG
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    CC7030
    CID429
    Liter7.0
    Engine Size7.0L/429
    Engine FamilyFORD COBRA JET/SUPER CJ V8 GAS
    DrivetrainRWD
    Engine VIN CodeC

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