Tamiya 15519 HG Round Hole Ball Bearings Set (4 Pieces) - Mini 4WD Performance Upgrade  [15519]

Precision bearing upgrade for Mini 4WD

Mini 4WD drivers wanting tighter, smoother running will see gains with the Tamiya 15519 HG Round Hole Ball Bearings. These high-grade bearings reduce rolling friction to improve axle and gear rotation, helping your car hold speed through both straights and bends.

Fitment and technical notes

The HG Round Hole Ball Bearings fit all Mini 4WD and Mini 4WD PRO cars except those using the Type 1 chassis. Built to precise tolerances, they install cleanly into standard hubs and gearbox positions. At a thickness of 2.5mm, these bearings suit racers focused on cutting mechanical drag to gain more consistent lap times.

Track advantages

Fitting these ball bearings lowers internal resistance, which typically results in higher sustained speeds and improved stability during fast sections. For club racers and time trial specialists, the reduced friction can help tighten lap spreads and improve overall reliability during repeated runs.