MN Model D4A-03 Front Axle Shaft with Gear – Upgrade Part for MN99S, MN86S, MN90 & WPL Crawlers

The MN Model D4A-03 Front Axle Shaft with Gear is a genuine MN upgrade part built for reliability and performance. It connects the front differential to the wheel hubs, transmitting torque efficiently while maintaining smooth rotational motion.

Constructed from high-strength alloy, it’s designed to withstand the stress of off-road crawling, ensuring your front axle runs smoothly even under high torque loads. Whether you’re replacing worn-out components or upgrading for durability, this shaft and gear combo is a must-have for your MN crawler’s drivetrain system.

Key Features

• Precision-Machined Metal Build: Ensures smooth and efficient power delivery.

• Durable & Long-Lasting: Resistant to wear, stress, and torque strain.

• Enhanced Drivetrain Strength: Perfect for metal axle or heavy-duty setups.

• Direct Fit: Designed for MN-series front axle assemblies.

• Factory Replacement Part: Genuine MN Model component (D4A-03).

Compatible Models

✅ Direct Fit

• MN128

• MN99 / MN99S

• MN90 / MN90K

• MN86 / MN86S

• MN82 / MN82S

• MN78

• MN91

• MN168

⚙️ Also Compatible with WPL Crawlers (with minor differential alignment or shaft length adjustments)

• WPL C14 / C24 / C44KM

• WPL B14 / B24

• WPL D12 / D42

🔧 Tip: Ideal when upgrading to a full-metal axle assembly for stronger, smoother performance