12-Pack Mini 4WD Bearings 520/620/830 – S2 MA Chassis Upgrade
12-Pack Mini 4WD Bearings 520/620/830 – S2 MA Chassis Upgrade
Upgrade Your Mini 4WD with Precision Bearing Steel Bearings
Take your Mini 4WD racer to the next level with this 12-piece bearing retrofit set. Crafted from durable bearing steel, these precision mini bearings are engineered to reduce friction and improve the smoothness of your chassis, guide wheels, and gears — delivering a faster, more consistent performance on the track.
Compatible with a wide range of popular Mini 4WD platforms including S2, MA chassis, Tamiya, Yang Kai, War Dragon, and more, this set covers the most common bearing sizes (520, 620, 830) so you can handle multiple upgrade points in one purchase.
Product Highlights
- Material: High-grade bearing steel for lasting durability
- Quantity: 12 pieces per set
- Color: Silver
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Sizes Included:
- Type A: 5 × 2.5 mm (0.19 × 0.09 in)
- Type B: 6 × 2.5 mm (0.23 × 0.09 in)
- Compatibility: 520 / 620 / 830 bearing positions — fits S2 MA chassis, guide wheels, and gear assemblies
- Fitment: Tamiya, Yang Kai, War Dragon, and other Mini 4WD 4WD chassis systems
- Condition: 100% brand new
Why Upgrade Your Mini 4WD Bearings?
Stock plastic bushings can create unnecessary drag and inconsistent wheel spin. Swapping them for metal ball bearings is one of the most popular and effective performance upgrades for any Mini 4WD enthusiast. These bearings allow your wheels and gears to rotate more freely, giving your car a noticeable edge in speed and stability.
What's in the Box?
- 12 × Mini 4WD bearing steel bearings (mixed sizes A & B)
Note: Photos may not reflect actual size. Please refer to the size specifications above. Allow ±5–10 mm tolerance from manual measurement. Actual color may vary slightly depending on your monitor settings.
Made in Mainland China.
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Frequently Asked Questions
Q: What Mini 4WD chassis types are these bearings compatible with?
A: These Mini 4WD bearings are designed to fit S2 and MA chassis systems, and are compatible with popular brands including Tamiya, Yang Kai, and War Dragon 4WD cars. The 520, 620, and 830 bearing sizes cover the most commonly upgraded positions including guide wheels and gear assemblies.
Q: How many bearings are included and what sizes are in the pack?
A: The set includes 12 bearing steel bearings in two sizes: Type A measures 5 × 2.5 mm and Type B measures 6 × 2.5 mm, covering multiple upgrade points on your Mini 4WD chassis in a single purchase.
Q: Why should I replace the stock bushings with these metal Mini 4WD bearings?
A: Metal ball bearings significantly reduce rotational friction compared to standard plastic bushings, allowing your wheels and gears to spin more freely. This retrofit upgrade is one of the most effective and affordable ways to improve the speed and smoothness of your Mini 4WD racer.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.