24010-RE Pinion gear 54-77. Red

When you are timing your valve train, getting the pinion gear fitment right is the key to a quiet engine. This JIMS Red-coded pinion gear is precision-machined from American aerospace-quality tool steel to incredibly tight tolerances. It is designed for 1954 to early 1977 Big Twin models and replaces OEM 24010-54. The Red size is part of a color-coded system used to achieve the perfect lash between the pinion and cam gears. A fit that is too tight will whine, while one that is too loose will click. Using a high-quality JIMS gear ensures long-lasting performance and helps eliminate the mechanical noise often confused with lifter issues in vintage Harley engines.