Ball Bearing 12x18x4mm (2) Nerro: ARAC3173
$8.99
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Ball Bearing 12x18x4mm (2) Nerro: ARAC3173
$8.99
Precision Fit
Exact Dimensions for Effortless Service
Steel Shielded
Maximum Dirt and Debris Protection
Ultra Smooth
Reduces Drivetrain Friction and Heat
In Stock
Smooth Drivetrain PowerEssential Servicing for Peak Performance
Keep your RC car operating at peak efficiency with the ARRMA Ball Bearing 12x18x4mm (2) set. Designed to minimize drivetrain friction, these high-quality ball bearings ensure your brushless motor power reaches the wheels smoothly.
Built for Harsh TerrainPrecision Engineering for RC Vehicles
When pushing your off-road RC truck to its limits, drivetrain components take a beating. The ARRMA Ball Bearing 12x18x4mm (2) pack provides exact-fit replacements manufactured to super-consistent tolerances. Featuring double steel protective shields, these bearings prevent dirt, dust, and mud from penetrating the internal race, extending overall component life. Whether you are servicing an ARRMA Granite, Senton, Big Rock, or Typhon, these ball-raced bearings deliver fast installation and long-lasting durability.
Bearing SpecificationsDimensions and Compatibility Details
Part Type
Ball Bearing
Inner Diameter
12mm
Outer Diameter
18mm
Thickness
4mm
Shield Type
Double Steel Shielded
Quantity
2 Bearings
Material
High-Grade Precision Steel
Compatible Vehicles
ARRMA 3S, 4S, Boost Series & Redcat Wendigo
Performance FeaturesEngineered for Maximum Reliability
Smooth OperationPremium ball-raced design for friction-free spinning
Protective ShieldingDouble steel shields keep out grit and debris
Exact TolerancesPrecision manufactured for consistent servicing and fit
Factory ReplacementIdeal OEM repair part for ARRMA 3S and 4S models
Optimal Size12mm inside x 18mm outside x 4mm thickness
Frequently Asked QuestionsEverything you need to know
What vehicles are compatible with the ARRMA Ball Bearing 12x18x4mm (2)?
The ARRMA Ball Bearing 12x18x4mm (2) fits a wide range of ARRMA models, including the Big Rock 3S, Granite 3S/4X4/BOOST, Kraton 4S, Outcast 4S, Senton 3S/4X4/BOOST, Vorteks, Mojave 4S, Typhon 3S/4X4, and the Redcat Wendigo.
Why is it important to replace worn ARRMA Ball Bearing 12x18x4mm (2) parts?
Worn or gritty bearings add friction to your RC car drivetrain, which reduces top speed, drains the battery faster, and puts extra heat stress on your motor and ESC.
How do the double steel shields on the ARRMA Ball Bearing 12x18x4mm (2) work?
The double steel shields cover both sides of the bearing, creating a barrier that protects the internal precision balls and raceway from dirt, dust, and moisture during off-road driving.