SPEEDWAY MOTORS 91639541 Beam Axle Kit Spindles 4-BAR

( Brand: Speedway Motors ), ( Part Type: Axle Spindle Motor ), ( Manufacturer Part Number: 91639541 ), ( California Prop 65 Warning: False )

Review SPEEDWAY MOTORS Model 4-bar I beam Axle Kit Ford Spindles Chrome

Introducing the Speedway Motors 91639541 4-bar I-beam axle kit, an essential upgrade for your Ford spindles. This axle kit is meticulously designed to deliver superior strength and durability to your vehicle's suspension system.

The heart of this kit is the 4-bar I-beam design, which replaces the traditional two-bar axle setup. This design provides increased stiffness and stability, resulting in improved handling and better traction. The I-beam axle bars are manufactured from high-strength steel, ensuring they can handle the rigors of high-performance driving.

Each axle bar is precision-engineered to fit perfectly with Ford spindles. The kit includes new end plates, brake drums, and spindle bearings, ensuring a seamless installation process. The new brake drums feature improved cooling capabilities, allowing for better braking performance and longer brake life.

The kit also includes new wheel studs and nuts, ensuring a secure attachment between the wheel and the axle. Additionally, the kit includes new bolts and hardware, making it a complete solution for upgrading your Ford spindles.

The Speedway Motors 91639541 4-bar I-beam axle kit is a must-have for anyone looking to improve the performance and handling of their Ford vehicle. Whether you're building a hot rod, restoring a classic car, or simply looking for an upgrade, this axle kit is an excellent choice. With its superior strength, durability, and ease of installation, you can trust that this kit will provide you with the confidence and control you need on the road or the track.

Pros and Cons of buying a Speedway 91639541 4-Bar I-Beam Axle Kit for Ford Spindles

The Speedway 91639541 4-Bar I-Beam Axle Kit is a popular aftermarket solution for upgrading the suspension system in various Ford models. This axle kit is known for its durability and performance enhancements. However, like any other automotive product, it comes with its advantages and disadvantages. In this analysis, we will discuss both the pros and cons of purchasing this axle kit.

1. Enhanced Performance: The 4-Bar I-Beam design provides improved handling and stability, making your Ford vehicle more responsive and agile.

2. Durability: The Speedway axle kit is made from high-quality materials, ensuring a long lifespan and resistance to wear and tear.

3. Customizable: The kit is compatible with various Ford models, allowing for a personalized upgrade based on your specific vehicle.

4. Value for Money: Compared to OEM alternatives, the Speedway axle kit offers a more affordable solution without compromising on quality and performance.

1. Installation Complexity: Installing the 4-Bar I-Beam axle kit requires significant expertise and time, making it a less desirable option for inexperienced DIYers.

2. Compatibility: The kit may not be a direct fit for all Ford models, and modifications might be necessary for a proper installation.

3. Potential Noise: Some users have reported an increase in noise levels after installing the axle kit, which may be due to the different materials or design compared to the OEM components.

The Speedway 91639541 4-Bar I-Beam Axle Kit offers several advantages, including enhanced performance, durability, customizability, and value for money. However, the installation process and potential compatibility issues might pose challenges for some users. Considering the benefits and drawbacks, this axle kit is a worthwhile investment for those seeking improved handling, stability, and a personalized touch for their Ford vehicle.

If you have the necessary expertise, resources, and time for installation, the Speedway 91639541 4-Bar I-Beam Axle Kit is an excellent choice for upgrading your Ford's suspension system. However, if you're uncertain about the installation process or prefer a plug-and-play solution, it might be worth considering alternative options or consulting a professional mechanic for guidance.

Details:

48 kingpin-to-kingpin I-beam axle, 4 drop. If using a Vega cross steering system, the pan hard bar becomes mandatory as any side-to-side movement will cause bump steer. Yes, I recommend this product.

Everything is included for installation. Forged steel lower shock mounts key-slotted design. Forged steel perch bolts. Four bar suspensions increase suspension travel over original wishbones or radius rods, which increases the need for side-to-side axle control.

Spring shackles w/ nylon bushings. The chrome is perfect even on the nuts and bolts. I love the Superbly axle. All hardware for assembly.

Each kit includes a 48 wide, 4 drop I-beam axle, our famous urethane-bushed 21 long four bar assembly, perch bolts, lower shock mounts, spring shackles, Super Glide and the necessary brackets hardware needed for assembly. Urethane-bushed 21 long 4-bar assembly. Requires '37-'48 Ford passenger car spindles.

part #: 91639541 price

• $1719.99

specifications lowerlageen:

• for makes: Ford
• brand: Speedway Motors
• part type: Axle Spindle Motor
• manufacturer part number: 91639541
• california prop 65 warning: False

offer lowerlageen:

• sold: 0
• options: Ship-to-home
• quantity: 6
• started: September 29, 2025
• availability: In Stock

returns lowerlageen:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

shipping lowerlageen:

• transit: 5-5 Days
• cost: $0.00
• class: Standard, Expedited
• type: Fixed
• service: Standard, Expedited

payments lowerlageen:

• other
• credit card: Diners-club
• wallet: Apple-pay

seller lowerlageen:

• city: Lincoln, Nebraska
• rating: 99.3%
• # reviews: 330109

general lowerlageen:

• Auto Permance Parts > Chassis, Suspension Brakes > Lower Kits Parts
• condition: New

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