Pinewood Derby Speed Wheels – Derby Worx Pro Inertia-Lites


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The Pro Inertia-Lite Wheels are mold number matched and C.N.C. machined on the inside and out . Derby Worx®  have designed this wheel to remove the maximum amount of mass from the wheel in the critical areas for maximum speed, but retain ALL of the interior stock markings that are required by many  Pack, District and Council Rules.  They work well with all lubricants (graphite or racing oils) and feature a Reamed and Burnished hub bore for easier alignment and greater speeds,  plus both hub faces have been coned for greater friction reduction.

Weight: 1.5 grams

Set of x4 Wheels

Don’t forget to polish the bores to make the wheels even faster.  Reduce friction and micro scratches!  DIY or Let us do it.

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SKU: DW-IL Category:


Fast Pinewood Derby Speed Wheels – Derby Worx Pro Inertia-Lites

Fast Pinewood Derby Speed Wheels that are a lighter than stock BSA wheels are design for decreasing rotational inertia, thus allowing quicker starts and overall times. Derby Worx® Pro Inertia-Lites can be run as is, or polished with Novus / plastic polish to remove micro scratches.   This set of Fast Pinewood Derby Speed Wheels usually yield an increase of speed by reducing on average 0.02 seconds in time with properly tuned car. Listening to a set of these wheels run, you can tell they are in a league of their own!

When designing your car, there are several key issues to consider that includes the efficiency of all the parts put together.  Using these known tricks will result in a fast pinewood derby car that looks and performs better. There are two most noteworthy factors.  A car with lighter speed wheels allow it go faster, however if the car is not aligned (tuned) then none of it really matters.

  • CNC lathe produce round and smooth wheels that will roll much faster than standard wheels
  • Weight reduction provides a faster start because of low start up inertia
  • Beveled hub design reduces the surface are friction of rubbing and braking when the wheel hub contacts the car body
  • These wheels allow for a greater top speed when compared to standard weight BSA wheels.

Pro Inertia-Lites Specifications

Derby Worx ® Inertia Lite
OD:  . 1.170″ Bead/Tread Present.
AWW:   1.5  grams measured 2017
Outer Hub:  Concave head (allows reduced wheel gap)
Wheel Edge:  Reduced, Trued  0.340″
Inner Wheel Hub: Shaped, Trued
Hub Bore:  Reamed to Manufactures Spec’s
This wheel has had the outer diameter reduced.  It will have bead/tread present.  Inner bores have been reamed, and polished according to manufacturers specs.  Mold Match only.  Inner portion of the wheel edge and hub have been trued. All BSA lettering in tact. Inner portion of wheel has been milled to remove weight.


On a Builders NOTE…. You will need a set of pliers to pull the axles once installed. Because the wheels have been ligthend, you can no longer pull the axle out by the wheel. You will bend/warp out of round. Then the wheel will not roll correctly and you just wasted $$$. Please dont let this be I told you so moment.

Stay Legal, know your Rules!

The rules of local events sometimes differ from those of BSA box rules. Due to this,  it is necessary to know your rules before choosing our unique modifications for your PWD car.  Each pack’s rules will be different. We ask before you make a purchase, please check your local rules. If you are unsure about the terminology, just email us, we will get you what you need.

Additional information

Weight 2 oz


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