The Yokomo B7-S3NA Aluminum Normal Spring Cup provides a solid upgrade path for BD7-2014 chassis owners. Machined aluminium construction reduces wear at the spring seat and supports repeatable damper action. Supplied as a pair, these cups are a good choice for racers wanting reliable component life and accurate setup feedback.
Using aluminium spring cups reduces deformation under load, which keeps spring preload and shock orientation more stable. That stability helps the car respond predictably when pushing hard or when surface conditions change.
These cups are made to fit the BD7-2014 standard shock configuration and fit directly without modification, so they are simple to fit whether you are prepping for a race or upgrading a weekend car.
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