Page 1 - DMI Bulldog Friction Fighter Quick-Change Gear Chart

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DMI™ BullDog™ Friction Fighter™ Quick-Change Gears

DMI™ (Diversified Machine) BullDog™ Friction Fighter™ 10
Spline Quick Change Gears are the strongest, lightest, highest

quality gears available in the racing industry. Each gear set is
made from ultra high strength 9310 steel and is also tone ground,
cryogenically processed and REM® finished. This process

results in the gear mesh area is only 1" wide eliminating friction.
Each gear set weighs less than 4.25lbs.

To Determine Final Drive (# Top Teeth) / (# Bottom Teeth) X Ring & Pinion Ratio = Final Drive

To Determine RPM Change (Current RPM) / (Gear Ratio) X (New Gear Ratio) = New RPM
Example 8200 5.42 5.56 8,400

DMI™ BullDog™ Friction Fighter™ 10 Spline Quick-Change Gear Ratios

Gear Set Number 4.12 Ring & Pinion 4.86 Ring & Pinion
Number of Teeth (8-33 Teeth) (7-34 Teeth)
DMIFFQCG-1 23 / 23 4.12 / 4.12 4.86 / 4.86
DMIFFQCG-2G 24 / 23 3.96 / 4.33 4.67 / 5.11
DMIFFQCG-15 22 / 21 3.94 /4.32 4.64 / 5.09
DMIFFQCG-6 25 / 23 3.80 / 4.48 4.47 / 5.28
DMIFFQCG-12 29 / 26 3.70 / 4.60 4.36 / 5.42
DMIFFQCG-7 26 / 23 3.67 / 4.66 4.33 / 5.50
DMIFFQCG-7G 24 / 21 3.61 / 4.71 4.25 / 5.55
DMIFFQCG-8G 27 / 23 3.51 / 4.84 4.14 / 5.71
DMIFFQCG-9G 24 / 20 3.44 / 4.95 4.05 / 5.83
DMIFFQCG-11 27 / 22 3.36 / 5.06 3.96 / 5.96
DMIFFQCG-13 25 / 20 3.30 / 5.16 3.89 / 6.08
DMIFFQCG-4G 23 / 18 3.23 / 5.27 3.81 / 6.21
DMIFFQCG-4 27 / 21 3.21 / 5.30 3.78 / 6.25
DMIFFQCG-20 26 / 20 3.17 / 5.36 3.74 / 6.32
DMIFFQCG-22 25 / 19 3.14 / 5.43 3.69 / 6.40
DMIFFQCG-16 28 / 21 3.09 / 5.50 3.65 / 6.48
DMIFFQCG-10 27 / 20 3.06 / 5.57 3.60 / 6.56
DMIFFQCG-34 26 / 19 3.02 / 5.64 3.55 / 6.65
DMIFFQCG-14 25 / 18 2.97 / 5.73 3.50 / 6.75
DMIFFQCG-35 27 / 19 2.90 / 5.86 3.42 / 6.91
DMIFFQCG-32 27 / 19 2.93 / 5.90 3.45 / 6.95
DMIFFQCG-32 26 / 18 2.85 / 5.96 3.36 / 7.02
DMIFFQCG-37 28 / 19 2.80 / 6.08 3.30 / 7.16
DMIFFQCG-23 27 / 18 2.75 / 6.19 3.24 / 7.29
DMIFFQCG-21 26 / 17 2.70 / 6.31 3.18 / 7.43
DMIFFQCG-43 28 / 18 2.65 / 6.42 3.13 / 7.56
DMIFFQCG-28 27 / 17 2.60 / 6.55 3.06 / 7.72
DMIFFQCG-30 34 / 21 2.55 / 6.68 3.00 / 7.87
DMIFFQCG-41 28 / 17 2.50 / 6.79 2.95 / 8.00
DMIFFQCG-33 27 / 16 2.45 / 6.96 2.88 / 8.20
DMIFFQCG-31 31 / 18 2.40 / 7.10 2.82 / 8.37
DMIFFQCG-50 28 / 16 2.36 / 7.22 2.78 / 8.51