10EUL (TT 0178 Main Shaft)

Genuine Shimano main shaft (part #10EUL) — the central axis that the spool rotates on inside Shimano conventional reels. The main shaft is one of the most critical structural components, supporting the spool, drag system, and gear train. A bent or worn main shaft causes wobble, uneven drag, and reduced casting distance. Cross-references with Shimano part number TT-0178. OEM quality ensures precise alignment and smooth spool rotation. Available from Offshore Tackle & Repair in Stuart, FL — professional Shimano reel repair on Florida's Treasure Coast.