Tamiya 15111 JR Round Hole Ball Bearing - reliable motor support for PRO MS chassis  [15111]

Intro to the Tamiya 15111 JR Round Hole Ball Bearing

The Tamiya 15111 JR Round Hole Ball Bearing is a practical Mini 4WD component aimed at improving motor spin and gearbox smoothness. Built for compatibility with the PRO MS chassis, it helps maintain steady motor performance in race conditions.

Compatibility with PRO MS double-shaft motors

The bearing is tailored to match the PRO MS chassis layout and its double-shaft motor setup. Proper installation reduces unwanted friction and keeps the motor assembly stable at higher revs.

Benefits for tuning and racing setups

Adding this JR bearing can make your drivetrain more efficient, which helps the motor deliver power more consistently. That smoother delivery is especially useful when tuning for straight-line speed and lap time stability.

How to fit the JR Round Hole Ball Bearing

Fitting the bearing is straightforward for most hobbyists. The round hole shape simplifies placement inside the gearbox and gives a secure seating that supports the motor shaft during running.