10NXH  (TGT0586  Idle Gear B)

Genuine Shimano Tiagra idle gear B (part #TGT0586, SKU 10NXH) — a secondary intermediate gear in the Tiagra's line counter or level wind mechanism. This gear works in the gear train to transfer rotational motion at the correct speed ratio, ensuring accurate line counting and smooth level wind operation. When idle gears wear or lose teeth, you'll notice inaccurate counter readings, clicking sounds, or erratic level wind movement. Cross-references with Shimano part number TGT0586. OEM replacement restores proper gear train timing and mechanical accuracy. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano Tiagra trolling reel parts and professional reel rebuilds.