Product Description
Elevate the performance of your Shimano Tranx 300, 400, or 500 with our Precision Ceramic Hybrid Spool Bearing Kit. Engineered for heavy-duty saltwater use and long-distance casting, this two-piece set replaces your factory stainless bearings with high-speed, friction-reducing SI3N4 Ceramic technology.
Whether you are hucking heavy iron for Yellowtail or launching oversized swimbaits for Musky, these bearings provide the "free-spool" speed needed to reach the strike zone and the corrosion resistance to stay there.
Compatibility & Sizing
This kit is a direct replacement for the two primary spool support bearings found in the Shimano Tranx series.
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Size 1: 3 x 10 x 4 mm (Side Plate Bearing)
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Size 2: 5 x 11 x 4 mm (Bearing located under the Spool Shaft Pin)
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Fits Models: Shimano Tranx 300, 301, 400, 401 (HG & PG variations).
Product Features
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ABEC 7 Precision: Manufactured to the highest industry standards for minimal vibration and maximum RPM.
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Ceramic Hybrid Technology: Si3N4 Ceramic balls paired with Stainless Steel races offer the perfect balance of lightweight speed and structural strength.
Maintenance Free: These bearings can be run "dry" for maximum casting distance or with a single drop of high-speed oil for silent operation. -
Corrosion Resistant: Specifically selected for harsh saltwater environments where standard chrome steel bearings fail.
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Ribbon-Lube Delivery: Pre-cleaned and ready to install.
Technical Specifications
| Specification | Detail |
| Inner Diameter | 3mm / 5mm |
| Outer Diameter | 10mm / 11mm |
| Width | 4mm / 4mm |
| Ball Material | Silicon Nitride (Si3N4) Ceramic |
| Race Material | 440C Stainless Steel |
| Seal Type | Removable Non-Contact Orange Seal Shields |
| Quantity | 2 Bearings per Kit |
Installation Tip
To install the 5x11x4mm bearing, you will need a Spool Pin Remover Tool to safely remove the cross-pin on the spool shaft. The 3x10x4mm bearing is located behind the tension knob or inside the removable palm-side plate.
Pro Note: Upgrading to Ceramic Hybrids will significantly increase your spool's "start-up" speed. We recommend adjusting your centrifugal or magnetic brakes higher for your first few casts to avoid backlashes while you get used to the new speed.
