Racing-grade 12-13mm Double Rollers M4WD-34/LB by 3Racing  [M4WD-34/LB]

Tamiya Mini 4WD Double Aluminum Rollers ( 12-13mm )(Light blue) - 3RACING M4WD-34/LB
Price:
USD$7.50
Brand:
3Racing
Model:
M4WD-34/LB
Condition:
Brand New
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Racing-focused 12-13mm double aluminium rollers M4WD-34/LB

Engineered for tuned Mini 4WD applications, these double aluminium rollers feature machined surfaces and a light blue anodised finish. The pair accepts 12-13mm outer roller diameters and is suitable where compact, durable roller packets are needed for aggressive layouts.

Compatibility targets standard Tamiya Mini 4WD mounting patterns that accommodate 12-13mm double rollers. This product is supplied as replacement rollers only, not a complete chassis or drive component; confirm shaft diameter, spacer specification and bearing selection to match MA, MS, Super-II and other race-class chassis.

Setup notes: ensure minimal bearing endplay, align shafts precisely to reduce runout, and secure metal fixings with appropriate locking hardware. Keep roller height and stabiliser clearances optimised to avoid unintended contact during high-speed cornering.

Service protocol: inspect contact faces for deformation after high-load runs, maintain bearings with light lubricant, and replace as matched pairs to retain symmetric handling. These rollers prioritise robustness and repeatable rolling performance for competitive use.

What setup changes should racers consider with aluminium rollers?

Racers should recheck spacer stacks and lower suspension tolerances to account for the aluminium roller width, and fine-tune stabiliser heights to prevent contact at speed.

Are specific bearings recommended for race use?

High-quality sealed bearings reduce maintenance and provide smoother rotation under load; choose bearings that match the roller bore and your shaft tolerances.

How to verify roller alignment during build?

Use a test run and visual checks for wobble, measure lateral play with feeler gauges, and confirm spacers compress evenly when the mounting bolt is torqued to race settings.

Do aluminium rollers need break-in?

A short bedding period on a clean track helps seating of bearings and reveals any machining imperfections; inspect and re-torque fastenings after initial runs.