24040-78 Pinion gear L77-89. Orange

Achieving the perfect gear lash in your valve train is critical for performance and engine life. This JIMS orange pinion gear is the largest size available in their range, designed for late 1977 to 1989 Big Twin models. Machined from premium American aerospace-grade tool steel, it is built to withstand the stresses of a heavy-duty motor. It replaces several OEM numbers including 24040-78, 24041-78, and 24042-78 among others. Because cam gear fitment dictates how quiet your valve train runs, using a precision gear like this prevents the clicking of a loose fit or the whining of a tight one. It is a professional-grade component for riders who want their late Shovel or Evo running exactly as it should.