Genuine Shimano Ball Bearing 4x7x2.5mm (part #104VX) — this micro-precision ball bearing supports smooth rotation in compact reel mechanisms, reducing friction and delivering the silky retrieve Shimano is known for. Worn or corroded bearings cause grinding, rough handle feel, and increased cranking effort. Cross-references with Shimano part numbers TGT3611, BNT4187, and RD13269 — check cross-compatibility for your specific reel model. OEM replacement ensures factory-spec tolerances and ultra-smooth performance. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano reel bearings and parts.