Nitro Stampede Suspension Pins Part Number: Complete Guide for Replacement and Identification

The Traxxas Nitro Stampede is a popular monster truck that relies on a robust suspension system to handle rough terrain. Over time, the suspension pins that hold the arms and shock ends can wear out or bend, leading to sloppy handling and reduced performance. Knowing the correct nitro stampede suspension pins part number is essential for a quick and accurate replacement. This guide covers the specific part numbers you need, how to identify the right pins, and practical tips for buying and installing them.

What Are Nitro Stampede Suspension Pins?

Suspension pins are hardened steel shafts that connect the suspension arms, shock absorbers, and other linkage points. In the Nitro Stampede, these pins are often held in place with e-clips or snap rings. There are several different pins used in the front and rear suspension, each with a specific length and diameter. Using the wrong pin can cause binding or premature failure.

Common Types of Suspension Pins

• Front upper and lower arm pins – Connect the suspension arms to the chassis bulkheads.
• Rear upper and lower arm pins – Similar but may differ in length for the wider rear end.
• Shock end pins – Tiny pins that attach the shock eyelets to the suspension arms or shock tower.
• Steering linkage pins – Pins that connect the steering knuckles and tie rods.

Why You Might Need Replacement Pins

Pins can bend after hard landings, or the e-clips can pop off causing loss of the pin. Symptoms include:

• Excessive play or slop in the suspension.
• Clicking or popping sounds during movement.
• Difficulty steering or uneven tire wear. If you notice any of these, inspect the pins for bending or missing clips. Ordering the correct part number saves the hassle of trial and error.

Nitro Stampede Suspension Pins Part Numbers

Traxxas uses specific part numbers for each type of pin. Below are the most common part numbers you will need for the Nitro Stampede (model number 4910 and similar versions). Always double-check your model year and manual.

Front Suspension Pins

• 3644 – Front upper suspension arm pin (2x26mm)
• 3645 – Front lower suspension arm pin (2x30mm)
• 3646 – Front shock end pin (2x10mm) – used for shock mounting
• 3647 – Front steering knuckle arm pin (2x16mm)

Rear Suspension Pins

• 3648 – Rear upper suspension arm pin (2x28mm)
• 3649 – Rear lower suspension arm pin (2x34mm)
• 3650 – Rear shock end pin (2x10mm) – same as front shock end pin
• 3651 – Rear toe link pin (2x20mm)

Other Common Pins

• 3643 – Suspension pin, 2x8mm (used for various small linkages)
• 3642 – Suspension pin, 2x12mm (rocker arm or shock tower)

Note that some later revisions of the Nitro Stampede (like the Brushless Edition or TQi-equipped models) may use slightly different pins. If your truck includes aluminum upgrades, aftermarket pins may have different diameters.

How to Identify the Correct Suspension Pins

If you don't have the original packaging or manual, you can measure the pins with a caliper. Traxxas pins are typically 2mm in diameter, but lengths vary. Measure the overall length from tip to tip, including the head if it has one. Compare to the lengths listed above.

Tip: Always buy a set of e-clips (part number 3640) when ordering pins, as they are easy to lose during disassembly.

Where to Buy Genuine Traxxas Pins

Original equipment pins are made of hardened steel and are available from local hobby shops or directly from Traxxas. Avoid generic hardware store pins because they are often not case-hardened and will wear quickly. Authorized Traxxas dealers carry the exact part numbers listed above. You can also order from online retailers that specialize in RC parts, but stick to known sources to avoid counterfeits.

Installation Tips for Nitro Stampede Suspension Pins

Replacing suspension pins is a straightforward mechanical job. You will need:

• Small flathead screwdriver or pliers for e-clips
• Optional: pin punch for stubborn pins
• Thread locker for screw-on pins (if applicable)

Step-by-Step

1. Remove the wheel and suspension arm as needed.
2. Carefully pry off the e-clip with a small flathead. Be mindful not to launch it across the room.
3. Slide the old pin out. Use a pin punch if it's stuck.
4. Clean the mounting holes with a small brush or compressed air.
5. Insert the new pin. If it's a tight fit, lightly sand the ends.
6. Reinstall the e-clip. Make sure it seats fully in the groove.
7. Reassemble the suspension and check for smooth movement.

Final Recommendation

For a Nitro Stampede that sees regular bashing, keep a spare set of the most common pins (3644, 3645, 3648, 3649) along with e-clips. This covers the majority of failures. Stock up on the shock end pins (3646) as they are tiny and easy to lose. If you upgrade to aluminum suspension components, double-check the pin lengths, as aftermarket parts sometimes use different diameters or require longer pins. Always refer to your truck's manual for the definitive part numbers, but the list above matches the vast majority of Nitro Stampede models. With the right pins in hand, you can get your monster truck back on the track in minutes.