Product Description
Shimano 10CMP Brake Collar (BNT4548)
The Shimano 10CMP Brake Collar (BNT4548) is an essential component of the Variable Brake System (VBS) found on many Shimano baitcasting reels. These small, replaceable weights sit on the pins of the brake case attached to the spool. When the spool spins during a cast, centrifugal force pushes these collars outward against the brake pipe, creating the necessary friction to prevent spool overruns and backlashes.
Maintaining your brake collars is vital for consistent casting performance. Over time, these collars can develop flat spots, become "glazed" with oil, or crack due to age. Replacing your worn collars with genuine BNT4548 parts restores the precise, predictable braking required for targeting specific structures and maximizing distance.
Product Specifications
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Part Name: Brake Collar
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Part Number: 10CMP
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Shimano Code: BNT4548
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System Type: VBS (Centrifugal Braking)
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Color: Typically Pink or Gray (Check specific reel for color-coded weight)
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Quantity: Sold individually (Standard reels use 6 per spool)
Alternate Part Numbers
This part is frequently identified or cross-referenced in technical manuals by the following number:
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BNT4548
Compatibility & Fitment
The 10CMP (BNT4548) is a universal-fit collar used in many of Shimano’s most famous low-profile and round baitcasting reels. It is a direct factory fit for the following series:
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Shimano Curado Series: CU-200E7, CU-200E5, CU-50E, CU-200G7, CU-200G6
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Shimano Citica Series: CI-200E, CI-200G6, CI-201G6
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Shimano Chronarch Series: CH-50E, CH-200E7, CH-100D, CH-101D
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Shimano Calcutta Series: CT-200D, CT-300D, CT-400D
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Shimano Cardiff Series: CDF-100A, CDF-200A, CDF-300A, CDF-400A
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Shimano Corvalus Series: CVL-200, CVL-300, CVL-400
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Shimano Core Series: CORE-50MG, CORE-100MG
Key Features
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Predictable Friction: Manufactured with specific density to provide consistent braking force at high RPMs.
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Easy Adjustment: Designed to "click" into the "on" or "off" position on the brake hub pins.
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Tapered Design: Specifically shaped to minimize vibration and noise during the cast.
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OEM Material: Made from a specialized polymer that maintains its friction coefficient even when exposed to light reel oil.
Pro Tip: For the most consistent casting, ensure the brake pipe (the metal ring inside the side plate) is clean and dry. A tiny amount of oil can be used on the pipe for extra distance, but it may reduce the braking effectiveness. To see the exact layout of the brake hub for your reel, refer to the PDF schematics at www.reelschematic.com.
