White Brake Sponge 15492: Choose a Thickness
Choose among the 1, 2 and 3 mm white brake sponges using clearance and repeatable track observations, without guessing braking force. Check live stock.
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A brake sponge set for tuning how a Mini 4WD car sheds speed before slopes, jumps and corners. Three thicknesses are supplied so the braking effect can be matched to the section of track and the mounting location, including the 1mm sponge, thin enough to fit in low-clearance spots such as the underside of the chassis. Sponge brakes work by dragging lightly against the rail or slope surface, so thickness is really a proxy for how much drag is applied at a given ride height — swapping between the 1mm, 2mm and 3mm pieces lets a builder retune braking strength without changing the brake stay itself. Tamiya's own compatibility tags extend the fitment beyond the headline MA, MS, AR, VS, Super-II and Super XX chassis to also cover VZ and ME Chassis.
Choose among the 1, 2 and 3 mm white brake sponges using clearance and repeatable track observations, without guessing braking force. Check live stock.
Compare 1, 2 and 3 mm Tamiya 15512 blue brake sponge on a measured, repeatable Mini 4WD setup. Check the cited sources and current rules. Review this guide.
Mini 4WD brake sponge hardness and stay angle are two separate settings. Compare friction grade against mounting angle so the car slows safely and consistently.