Compu-Fire 54001 84T Ring & 10T Pinion Starter Ring Gear Kit 1084 Kit fits Big Twin 1990-93 Models (Easy-R)

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Compu-Fire 1084 Gear Set The Compu-Fire 1084 gear sets are engineered to increase the starter motor torque by lowering the gear ratio of the pinion gear to the clutch ring gear. When used as a replacement for the 9:66 ratio gear sets, a 15% increase in torque is obtained.  They are also used as replacements for the weak 10:102 ratio gear sets which are prone to breaking on late model Big Twins.

(ER-54001)