OfficinaRC Black Brass Smart Shim 3x9x3 mm - (8) OFC-BBSS-3930

If you have ever lost a race because your suspension felt just slightly off, you already know how much the small stuff matters. These OfficinaRC Black Brass Smart Shims are exactly the kind of upgrade that separates a dialed-in car from one that is still chasing setup.

Measuring 3x9x3 mm and sold in a pack of eight, these shims are machined from brass and finished in black to give your build a clean, purposeful look. Brass is the go-to material for serious racers because it adds precise, low-mounted weight exactly where you place it, which helps lower your center of gravity and improve traction consistency lap after lap.

Whether you are fine-tuning a touring car, a pan car, or a buggy, getting your suspension geometry right starts with having the right shims on hand. These fit a wide range of 1/10 and 1/12 scale applications and are the kind of consumable that every serious racer keeps stocked in their pit bag.

Eight pieces per pack means you have enough to set up a full car and still have spares ready when you need them at the track.