3RACING 3RB-MR128-ZZ/10 Racing Grade Double Metal Shield Bearings 8x12x3.5mm  [3RB-MR128-ZZ/10]

3RACING Double Metal Shield Bearing 8 x 12 x 3.5 mm (10 pcs) - 3RB-MR128-ZZ/10
Price:
USD$6.50
Brand:
3Racing
Model:
3RB-MR128-ZZ/10
Condition:
Brand New
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Race Focused Bearing Upgrade

The 3RACING Double Metal Shield Bearing 8x12x3.5mm is aimed at hobbyists tuning drivetrain efficiency. These bearings provide consistent rotational performance and help reduce parasitic losses in wheel and pulley assemblies.

Shielding That Suits Track Use

Dual metal shields keep contaminants out while preserving internal lubrication, which is useful during setup changes and repeated runs. This improves repeatability between heats and reduces unscheduled bearing swaps.

Practical Fitment and Tuning Notes

Use these bearings where 8x12x3.5mm fits are specified, such as compact hubs and accessory shafts. They are a low cost, high value option when tuning for smoother throttle response and reduced drivetrain drag.

How do these bearings affect lap consistency?

Reduced friction from properly seated bearings can stabilise lap times by ensuring drivetrain losses are minimised, giving more predictable handling between runs.

Any setup tips for race day changes?

Inspect bearing fits and axle play during each setup change and replace any units showing roughness. A quick spin test and light oil can verify smooth operation before a heat.

Which components benefit most from these bearings?

Wheel hubs, idlers and small gearbox shafts typically gain the most from low friction, sealed bearings when chasing consistent race performance.