OfficinaRC Black Brass Smart Shim 3x9x1.5 mm - (8) OFC-BBSS-3915

If you have ever lost a race because your suspension geometry shifted mid-run, you already know how much a shim matters. The OfficinaRC Black Brass Smart Shim in 3x9x1.5 mm is one of those small parts that quietly does a big job. Machined from solid brass and finished in black, each shim delivers the kind of dimensional consistency that serious racers depend on when tenths of a millimeter actually count.

Brass was chosen for good reason. It sits heavier than aluminum and resists compression under load, which means your setup stays exactly where you put it whether you are running a tight indoor carpet track or a rough outdoor surface. The 3x9x1.5 mm spec fits a wide range of 1/10 and 1/12 scale touring car and pan car platforms, making these a practical addition to any pit bag.

Each pack includes 8 shims so you have enough to dial in both ends of the car and keep a few spares on hand. Whether you are chasing a factory setup or building something custom from scratch, these give you a reliable baseline to work from.

Small parts. Real results.