Over sixty years of gear manufacturing know-how went into designing Quarter Master® Ultra-Duty™ Quick Change Gears. Starting with the highest quality E9310 aircraft steel, we precision hob them to AGMA Class B Tolerances to produce a true involute tooth form for a high contact ratio. After a proprietary heat treatment process, all gears are hand roll tested and inspected. These quick change gears are specifically designed to run smoother and last longer than any other on the market. They are available with 64 gear ratios in 10-Spline for Sprint and Late Models, and 42 gear ratios in 6-Spline for Midgets.
Ultra Duty Quick Change
Over sixty years of gear manufacturing know-how went into designing Quarter Master® Ultra-Duty™ Quick Change Gears. Starting with the highest quality E9310 aircraft steel, we precision hob them to AGMA Class B Tolerances to produce a true involute tooth form for a high contact ratio. After a proprietary heat treatment process, all gears are hand roll tested and inspected. These quick change gears are specifically designed to run smoother and last longer than any other on the market. They are available with 64 gear ratios in 10-Spline for Sprint and Late Models, and 42 gear ratios in 6-Spline for Midgets.
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Ultra Duty Gears, 16/30 teeth, spur ratio: 1.875
$174.00Ultra Duty Gears, 16/30 teeth, spur ratio: 1.875 Learn More -
Ultra Duty Gears, 22/35 teeth, spur ratio: 1.591
$174.00Ultra Duty Gears, 22/35 teeth, spur ratio: 1.591 Learn More -
Ultra Duty Gears, 19/30 teeth, spur ratio: 1.579
$174.00Ultra Duty Gears, 19/30 teeth, spur ratio: 1.579 Learn More -
Ultra Duty Gears, 16/25 teeth, spur ratio: 1.563
$174.00Ultra Duty Gears, 16/25 teeth, spur ratio: 1.563 Learn More -
Ultra Duty Gears, 20/31 teeth, spur ratio: 1.55
$174.00Ultra Duty Gears, 20/31 teeth, spur ratio: 1.55 Learn More -
Ultra Duty Gears, 15/23 teeth, spur ratio: 1.533
$174.00Ultra Duty Gears, 15/23 teeth, spur ratio: 1.533 Learn More -
Ultra Duty Gears, 21/32 teeth, spur ratio: 1.524
$174.00Ultra Duty Gears, 21/32 teeth, spur ratio: 1.524 Learn More -
Ultra Duty Gears, 22/33 teeth, spur ratio: 1.5
$174.00Ultra Duty Gears, 22/33 teeth, spur ratio: 1.5 Learn More -
Ultra Duty Gears, 21/31 teeth, spur ratio: 1.476
$174.00Ultra Duty Gears, 21/31 teeth, spur ratio: 1.476 Learn More -
Ultra Duty Gears, 17/25 teeth, spur ratio: 1.471
$174.00Ultra Duty Gears, 17/25 teeth, spur ratio: 1.471 Learn More
