The Arrowmax AM-MAX-003 spring cup set is supplied as an RC spares kit for Yokomo B-MAX shock assemblies. The set includes 4 pcs of spring cups marked 7075, intended to match common spring-seat interfaces used on B-MAX shocks.
What they do: these cups locate the spring on the shock shaft and help preserve consistent preload and seating during runs. For tuning they are a simple upgrade to lower spring-height variance that can influence handling.
Fitment guidance: listed for Yokomo B-MAX series shock assemblies; confirm your shock top and lower perch dimensions before fitting to make sure the cups sit correctly.
How to fit: remove the old spring cup, place the spring over the replacement cup and reassemble the shock per its design. No specialist tools are required beyond typical workshop tools; take care not to damage threads or the shaft.
Construction: the 7075 marking in the product name denotes an aluminium alloy commonly used in RC upgrades for improved wear resistance at the spring seat.
Package contents:
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