The ZENE Bricks Differential is engineered for LEGO RC models with high-performance brushless motors, enabling ultra-high-speed rotation. Designed to prevent gear jamming, skipping, and wear, it features metal half-shaft gears, planetary gears, and gear racks in a compact, integrated design. Fully compatible with chassis, drives, and shafts, it's ideal for high-speed, high-torque RC upgrades. Made with durable 3D-printed plastic and metal gears, it ensures smooth, reliable performance for advanced RC enthusiasts. 

Speed exposes weak points. The moment you swap a stock motor for a brushless powerhouse, the original LEGO® differential is usually the first part to give up, skipping teeth, jamming under load or wearing flat. This metal differential is built to take that punishment.

Size parameters (Perfect compatibility with LEGO cars):

• Gear ratio is 2.545:1
• Square, length: 7 units (56mm), width: 5 units (40mm), height: 3 units, highest point (24mm), leaving space for the axis to pass through
• H shape, length: 11 units (88mm, 2 more connecting beams at each end compared to the square shape), width: 5 units (40mm), height: 3 units, highest point (24mm), with a shaft in the middle through space

Four Versions

• The square differential can be adapted to all 1:8 models and can be driven with universal joints or cross shafts.
• H shape, can match all 1:10 models, can be used with universal joints or direct drive shafts.
• Available in white and black, sent randomly.

Diff Interface:

• Diff: Female part (Connect axis), cross hole interface, used to directly connect the output shaft, matching LEGO or metal shaft, diameter 4.8mm.
• Diff: Male part (U-joint), square metal solid output shaft, connected to a universal joint, which is used to connect the output shaft.
• Diff: Both types, two types of parts are provided, which can be plug and unplug, no additional disassembly is required, and can be flexibly configured.

How to choose the version:

ZENE Bricks differentials are generally of two types: Square, suitable for 1:8 scale cars, such as the flagship models 42143 and 42232; and H-type, suitable for 1:10 scale cars, such as 42096 and 42156, as well as F1 cars.

Both types are available in dual-input and single-input versions. Dual-input is mainly suitable for cars with engine linkage. If the engine is removed, you can consider single-input only.

There are two types of outputs: male connectors are used to connect to universal joints, allowing the differential and wheels to be on different planes; and cross-head connectors can directly connect to the output shaft, generally used for outputs on the same plane, but this depends on your design.

What is a differential

Players who are interested in mechanical structures, no one can bypass the differential invented by Renault in France. The indispensable differential device on the car allows your multi-axle drive car to connect the drive axle and drive shaft, otherwise your The car can only run in a straight line, especially off-road vehicles, a powerful differential can better pass through bad roads.

More Q&A: ZENE High Performance Brushless Motor Modification QA

Engineered for Brushless Power

The ZENE Bricks metal differential is designed specifically for RC models running high-performance brushless motors. It handles ultra-high-speed rotation without complaint, so you can chase top-speed runs instead of nursing a fragile drivetrain.

What Makes It Stronger

Metal Half-Shaft and Planetary Gears
Half-shaft gears, planetary gears and gear racks are machined in metal, replacing the plastic parts that strip under torque.
Bearings and an Integrated Housing
Ball bearings keep the assembly spinning smoothly at speed, while the compact, integrated design adds strength without adding bulk.

Built to Fit Your Chassis

Full compatibility with the chassis and the drive-and-shaft connection means it drops into existing builds with no redesign and no guesswork. Multiple differential configurations let you match the setup to your model and your driving style.

Why Upgraders Choose Metal

Plastic differentials are fine for display, but under brushless power they skip, jam and wear, and one stripped gear ends a run. Metal gears and bearings turn a fragile drivetrain into one that survives repeated high-speed passes, so the upgrade pays for itself in reliability.