104K8 (RD13539   Drive Gear)

Genuine Shimano drive gear (part #RD13539, SKU 104K8) — the primary power gear in your spinning reel's drivetrain that meshes with the pinion gear to convert handle rotation into rotor spin and line retrieval. The drive gear carries the full mechanical load of every crank, making it critical for smooth, efficient performance especially when battling large fish under heavy drag. Worn or chipped teeth cause grinding, gear skip, and eventual drivetrain failure. Cross-references with Shimano part number RD13539. OEM replacement ensures hardened steel construction and precise tooth geometry for years of reliable service. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano spinning reel parts and complete gear train rebuilds.