3RACING 3RB-MR84-ZZ/2 Racing Double Metal Shield Bearings 4x8x3mm  [3RB-MR84-ZZ/2]

3RACING Double Metal Shield Bearing 4 x 8 x 3 mm (2 pcs) - 3RB-MR84-ZZ/2
Price:
USD$1.50
Brand:
3Racing
Model:
3RB-MR84-ZZ/2
Condition:
Brand New
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Race-Focused Bearing Option from 3RACING

For tuners seeking consistent bearing performance, the 3RACING 3RB-MR84-ZZ/2 double metal shield bearings in 4x8x3mm are a sensible component choice. They provide predictable rolling behavior and straightforward fitment for a variety of small-scale race cars.

Shielded Design for Stable Running

The dual metal shields reduce ingress and help retain lubricant, which supports repeatable lap times and reduced variance in drivetrain friction between runs. This stability is useful when dialing in gearing or tyre changes.

Value Part for Setup and Maintenance

As a paired spare these bearings are practical for quick service turns or when refreshing running gear. Their common 4x8x3mm sizing fits many entry to mid-level racing platforms and provides a cost effective tuning option.

Metal shields reduce contaminant ingress while keeping rolling resistance low, which helps maintain consistent bearing drag across multiple heats.
Metal shields offer lower friction which can benefit top speed and acceleration; rubber seals block finer contamination better. Choose based on track conditions and tuning priorities.
Use a bearing driver that presses on the outer race, verify free spin after seating and standardise lubrication across all bearings to reduce setup differences.