ProUltralite BSA Speed Wheels (4)


Official Cub Scout/BSA wheels which have been precision machined with True Track Tread and then reduced in weight to 1.1 grams for an ultra-fast start. Each order includes four wheels with a trued tread surface. In addition, the recessed step on the outer hub is removed and coned, and the inside edge is trued. These wheels can be ran without any additional prep work.


Now, the ultimate wheel for your BSA race!

Our Pro Ultra Lite Pinewood Derby Speed Wheels are official BSA wheels which are sorted by mold number, and then precision machined to tight tolerances with a CNC (computerized) lathe using proprietary fixtures and tooling. The precision of this machining cannot be duplicated on hobby lathes.

To provide you with an awesome set of wheels, we perform the following operations:

  • Outer hub faces are coned to minimize contact with the axle head.
  • The wheel tread is lathed with True Track to achieve a perfectly round wheel, and a flat tread surface.
  • The weight of the wheel is reduced by removing all excess plastic from the underside of the wheel tread and the inside wheel face.


  • Round and smooth wheels roll faster than standard wheels.
  • The weight reduction provides a faster start, and improves the balance of the wheel for a smoother ride.


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


Model Trued Tread Coned Outer Hub Trimmed Edge Weight Reduced
4090/4091 Yes No No No
4080/4081 Yes Yes Yes No
4070/4071 Yes Yes Yes Yes
4060/4061 Yes Yes Yes Yes

Technical Information for 4060/4061 Wheels

Wheel Diameter: 1.165 ± 0.005 (Raw Wheels: 1.182 to 1.185)

Wheel Bore ID: 0.098

Wheel Weight: 1.1 grams +/- 0.1 per wheel (Raw Wheels: 2.7 grams/wheel)

Additional information

Weight 0.5 oz