Product Description
Shimano 10J1N Star Drag Spacer (BNT2127) | Genuine Replacement Part
The Shimano 10J1N Star Drag Spacer (BNT2127) is a precision-engineered internal washer designed to maintain the correct spacing and consistent pressure within your reel's drag stack. This spacer sits behind the star drag wheel, ensuring smooth rotation and preventing the drag adjustment from binding or loosening during heavy use.
Crafted from high-performance, wear-resistant materials, this part is essential for maintaining the mechanical integrity of your reel's braking system. If your star drag feels "gritty" or lacks the precision to hold a specific tension, a worn or flattened spacer is often the culprit.
Product Specifications
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Part Name: Star Drag Spacer
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Shimano Part Number: 10J1N
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Alternate Part Number: BNT2127
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Additional Cross-References: FLY0202, TGT1651
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Function: Maintains drag stack alignment and consistent adjustment pressure.
Compatible Reel Models
This star drag spacer is used across a vast range of Shimano baitcasting and high-performance conventional reels. Common compatible series include:
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Shimano Aldebaran: 50, 50HG, 51, 51HG, and MGL 50 series.
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Shimano Antares: 100, 100HG, 101, 101HG, and 70AHG.
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Shimano Bantam: MGL 150, 150HG, 150XG, 151, 151HG, and 151XG.
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Shimano Chronarch: 50E, 51E, 200E5, 200E6, 201E5, 100BPV, and 100BSV.
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Shimano Casitas: 150, 150HG, 151, 151HG.
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Shimano Caenan: 150A, 150AHG, 151A.
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Shimano Exsence: DC XG models.
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Shimano Asquith: ASQ78 Fly Reels.
Technical Tip: Because this part is used in many different generations of reels, we recommend checking your specific model's PDF schematic at www.reelschematic.com to ensure proper placement.
Maintenance & Lubrication Recommendation
For optimal drag performance and to prevent the spacer from sticking to adjacent washers, proper lubrication is required during assembly. We recommend Deuthlon Lubricants:
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For the Drag Stack: Apply a light film of Deuthlon Reel Gear Grease or their specialized drag grease to the spacer. This ensures the star drag wheel turns smoothly against the spacer without generating heat or friction.
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For Corrosion Protection: In saltwater environments, use Deuthlon Power Cast Oil on the drive shaft threads before installing the spacer and star drag to prevent salt-binding.
Why Choose Genuine Shimano Parts?
The 10J1N (BNT2127) is manufactured to the exact thickness required for your reel's drive shaft. Using an incorrect or generic spacer can result in:
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Drag Slip: Insufficient pressure on the drag washers.
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Adjustment Binding: The star drag may become difficult to turn or "lock up" prematurely.
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Gear Alignment Issues: Incorrect spacing can lead to uneven wear on the main gear and pinion.
