Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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B&J Quick Change Gear Sets

SAME DAY SHIPPING! Order within the next 4 hours 16 minutes and receive same day shipping

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B&J Quick Change Gear Sets
B&J Quick Change Gear Sets

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Q & A

What's in the Box

These gears have been used by more traveling professional racing teams than all others.  If you need gears that take less horsepower to run and will last many seasons these are the gears. Made with proprietary steel and proprietary heat treating. Under cut for lite weight. Crown shaved tooth profile.

Quick Change Gear Set Chart Application

You may also be interested in:

Winters Quick Change Gears, 10 Spline
  • 8620 Steel
  • Heat Treated
  • CNC Machined
  • 10 spline
  • 1-1/4" Width

Winters Quick Change Gear Chart

Oil Drip Pan for Quick Change Units

All aluminum construction. Easily pours hot oil with built-in corner spout. Comfortable, ergonomic handle. Max capacity is 6 quarts.

  • All aluminum construction
  • Easty to pour hot oil with built in corner spout
  • Comfortable, ergonomic handle


Garage Sale - Pro Quick Change Gears, 8620 Steel

This is garage sale priced because it has been discontinued. 



Over sixty years of gear manufacturing "know how" was designed into our Pro Gears.  We start by using the highest quality 8620 steel.  The we precision hob them to AGMA Class 8 tolerances to produce true involute tooth form for a high contact ratio.  We finish them with a proprietary heat treat process then hand roll test and inspect each and every gear set giving you results on the track that can't be beat!  These quick change gears are specifically designed to run smoother and last longer than anyone else's and are the finest quick change gears available in the marketplace today!

Pro Gear Chart (PDF)

Lubrication Engineers SAE 90 Weight Gear Oil, 1 Gallon
                        Whether you're running a stock flattie and rearend or hopped-up overhead and quick change, you need to run a good gear lube. Remember that your rearend was designed fifty plus years ago and needs all the help it can get. 

The biggest improvement you can give it is a lubricant that will allow the gears to survive the highway speeds that cars see today. L.E. gear oil is what we use in our 350 mph streamliner, that uses a V-8 quick change, without failure. The "red stuff" provides superior lubrication for long gear life. You can't win if you don't finish. We suggest 90 weight for the street and 140 weight for extreme uses.

  • Formulated using blends of high quality paraffinic and synthetic base fluids
  • Contains a highly shear stable tackiness
  • Unique blend of base fluids and thermally stable EP additives
  • Separates readily from water
  • Contains non-silicone defoaming additives
  • Contains no solids
  • Contains DUOLEC LE's proprietary dual acting liquid wear-reducing and extreme pressure additive
LE Gear Oil Performance Data Sheet (PDF)

LE Gear Oil Safety Data Sheet  (PDF)