JIMS, pinion gear L77-89. Black

Gear size over .105" pins: 1.4710-1.4715". Cam gear over .105" pins: 2.7384-2.7394". Made from the finest American aerospace quality tool steel. Precision machined to exact tolerances with no compromises. Note: Cam gear fitment is essential to quiet valve train operation. Too loose of a fit will result in a clicking noise, sometimes confused with lifter noise. A too tight fit will produce a whining sound and premature wear. Sizes are as follows: 961307 Orange (biggest). Repl. 24040-78. 961308 White. Repl. 24041-78. 961309 Yellow. Repl. 24042-78. 961310 Red (average). Repl. 24043-78. 961311 Blue (average). Repl. 24044-78. 961312 Green. Repl. 24045-78. 961313 Black (smallest). Repl. 24046-78. / Fitment: L77-89 Big Twin (NU) smallest