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MAXIMUM VELOCITY! ®

4090
Official BSA
Pinewood Derby
Speed Wheels



BSA pinewood derby wheels are well designed, but unfortunately the wheels vary considerably from mold to mold. Most of the wheels are not perfectly round and the tread surface is not even.

Our Speed Wheels are official BSA wheels which are sorted by mold number, and then precision machined with a CNC (computerized) lathe for maximum performance. To provide you with an awesome set of wheels, we perform the following operations:
If you would like to order wheels with a particular mold number, Click Here.

Benefits
Usage

The Official BSA Speed Wheels can be used without any additional preparation. However, the following steps can be performed for additional speed:
Important Note

The lathing operation removes a small amount of tread surface. The serrated edge is intact. The tread reduction is barely visible to the eye, but is measurable with a caliper. If your race restricts the use of lathed wheels, consider using our specialty tools and supplies to prepare a set of raw wheels.

Technical Information for 4090/4091 Wheels
Wheel Diameter:   1.170 ± 0.001   (Raw Wheels:   1.182 to 1.185)

Wheel Bore ID:   0.096 minimum

Wheel Weight:   2.6 grams/wheel   (Raw Wheels:   2.7 grams/wheel)

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