Exact Weight Tuning (30-Piece Set) – Dial in race-ready weight with 30 incremental cylinders: 4×1/2 oz, 6×1/4 oz, 8×1/8 oz, 12×1/16 oz (Total 5.25 oz). Fine steps help you hit the limit without guesswork.
Same Diameter, Four Heights – All cylinders share a consistent 3/8" diameter for clean, repeatable placement—only the height changes by size. Great for balancing front-to-back and side-to-side without bulky blocks.
High-Density Tungsten Advantage – Tungsten packs more weight into less space, making it easier to concentrate mass where you want it—especially near the rear for better starts. Solid metal pieces won't crumble like putty.
Easy Install with Common Tools – Drill 3/8" holes, test-fit, glue, and sand flush. Cylindrical shape seats neatly in drilled pockets for a clean finish and stable hold—ideal for new builds or last-minute tuning.
For Derby-Style Builds & STEM Projects – Designed for pinewood derby-style cars and wood race builds. A practical kit for workshops, family build nights, and classroom STEM projects (car body/axles/wheels not included).