Official BSA
Pro Ultra Lite Pinewood Derby Speed Wheels
1 Gram Wheels by DerbyWorx
4094 - BSA Speed Axles

Now, the ultimate wheel for your BSA race!

Our Pro Ultra Lite Pinewood Derby Speed Wheels are official BSA wheels which are precision machined by DerbyWorx with a CNC (computerized) lathe to within 0.0005 inches for the ultimate in accuracy and thus, maximum performance. To provide you with an awesome set of wheels, DerbyWorx performs the following operations:

The Pro Ultra Lite Speed Wheels are used without any additional preparation. Optionally polish the bore with Bore Polish, then lubricate and race!

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.

Comparison Chart and Photos of Matched Speed Wheel Types

Outer Hub1
4090/4091 Yes No No No No
4080/4081 Yes Yes Yes Yes No
4070/4071 Yes Yes Yes Yes Yes
4060/4061 Yes Yes Yes Yes Yes
1The inside wheel hub is coned by default on BSA wheels.

Technical Information for 4060/4061 Wheels
Wheel Diameter:   1.170 ± 0.001   (Raw Wheels:   1.182 to 1.185)

Wheel Bore ID:   0.098

Wheel Weight:   1.0 grams +/- 0.1 per wheel   (Raw Wheels:   2.7 grams/wheel)

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Pinewood Derby is a registered trademark of Boy Scouts of America
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