This is an RC-scale spring cup made for SLF Normal Shock setups, sold under the Yokomo YOKB7-S3N identifier. It acts as the spring seat between the coil spring and the shock body on dampers built to the SLF Normal Shock layout, and it is finished in black to match common builds.
The product title references BD7-2014 as the chassis/shock family; do not assume fitment beyond BD7-2014 and SLF Normal Shock without checking your shock shaft diameter and spring inner bore. This cup locates the spring axially and provides a stable contact surface to help preserve consistent preload and alignment during running.
Installation is straightforward for experienced hobby technicians: the cup slips over the shock shaft and sits between the spring and shock body or retainer as required by your assembly. Verify orientation and seating before final assembly and confirm free shaft movement through its travel after the spring is fitted. This component is a replacement or maintenance part for hobby-grade touring car suspension and is not intended for full-size vehicle use.
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