Mini 4WD Round Hole Ball Bearing

The Hobby Hideaway Verdict: The Gold Standard for Drivetrain Efficiency! If you are looking to unlock the true speed of your machine, high-quality ball bearings are the single most important upgrade you can make. These Round Hole Ball Bearings are designed to replace the standard plastic or metal bushings found in most kits, drastically reducing rolling resistance. At Hobby Hideaway, we consider these an essential "Day 1" upgrade for any racer serious about maximizing their speed and dominating heats on our track.

Friction Reduction for the PRO Series While these bearings are compatible with a wide range of Tamiya machines, they are a perfect match for the Mini 4WD PRO (MS and MA) chassis. By allowing your axles to spin freely with minimal friction, you ensure that every bit of power from your motor is being translated directly into forward momentum. This efficiency not only increases your top speed but also helps maintain high speeds through long, technical corner sections.

Key Features & Technical Specs:

• High-Precision Build: Steel ball bearings designed for high-RPM stability and long-lasting performance.

• Reduced Friction: Significantly lowers drivetrain resistance compared to stock plastic or bronze bushings.

• Universal Fit: Standard 6mm outer diameter and 2mm inner diameter, making them compatible with most Mini 4WD chassis axles.

• Complete Set: Includes 4 bearings to fully outfit one car’s front and rear axles.

• Performance Longevity: Durable construction ensures they can handle the high stress of upgraded motors and high-speed track runs.

Hobby Hideaway Pro Tip: To get the absolute maximum RPM out of these bearings, many veteran racers like to "clean" them before installation. By soaking them in a safe degreaser to remove the thick factory grease and replacing it with a single drop of high-quality, lightweight bearing oil, you can significantly reduce drag. Just remember: a little goes a long way! Keeping your bearings clean and lightly lubed is the secret to a drivetrain that sounds like a whisper and moves like a rocket.

Why buy from Hobby Hideaway? We aren’t just an online store; we are a racing community. Whether you are building a competitive MS chassis, fine-tuning your drivetrain, or looking for the best performance parts in Canada, our team provides the expertise to help you succeed. From technical advice to a curated selection of genuine Tamiya parts, we’ve got your back from the assembly bench to the finish line.

Join the Action at the Orleans Track! Ready to see the difference a smooth drivetrain makes? Bring your machine down to our dedicated indoor track at our Orleans shop. We host regular racing events and practice sessions that offer the perfect environment to push your limits. Whether you’re dialing in your gear mesh or learning the ropes from veteran racers, there’s no better place to be. Come join our growing community and experience the adrenaline of the track in person!

Note: Regular maintenance is key. Inspect your bearings after a long race day for any grit or debris to ensure your machine stays in peak racing condition.