Product Description
SMOOTH DRAG CALCUTTA 400 CARBON DRAG KIT (Carbontex Upgrade)
Transform the fighting power of your Shimano round reel with this premium Carbontex drag washer upgrade.
The Smooth Drag Calcutta 400 Carbon Drag Kit is the ultimate performance upgrade for the legendary Shimano Calcutta 400 and 700 series reels. Unlike stock felt or "Dartanium" washers that can become jerky or sticky over time, these Carbontex washers offer silky smooth startup inertia and consistent drag pressure across the entire range.
Whether you are battling trophy salmon, musky, or saltwater gamefish, this kit ensures your drag won't seize when a fish makes a sudden run. Carbontex material is heat-resistant, durable, and can be used dry or with a very light coating of drag grease (like Cal's Universal Drag Grease).
Product Features
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Part Type: Carbon Fiber Drag Washer Kit
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Material: Premium Carbontex (Next-generation Carbon Fiber)
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Kit Contents: Complete set of main gear drag washers (typically 3-4 washers depending on the stack config).
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Benefits:
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Eliminates "chatter" and jerking.
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Higher heat tolerance than stock washers.
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Increases maximum drag pressure potential.
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Extends the service life of the reel.
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Why Upgrade to Carbontex?
The original drag washers in older Calcutta B and Cardiff reels were often made of a fibrous material that compresses and degrades, leading to inconsistent pressure. Installing this kit replaces the stock BNT2432 and BNT2118 washers with rigid carbon fiber, providing a "set it and forget it" reliability that serious anglers demand.
Tech Tip: For the smoothest possible performance, apply a paper-thin amount of Drag Grease to both sides of the Carbontex washers before installation. This seals the carbon and provides the ultimate smooth startup.
Compatible Models
This kit is sized for the "Large Diameter" drag stack found in the 400 size Shimano round reels.
Shimano Calcutta Series:
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Calcutta 400 (Original Silver CT400)
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Calcutta 400B (Gold CT400B)
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Calcutta 400BSV
Shimano Cardiff Series:
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Cardiff 400A (CDF400A) (Will use stock washer under drive gear)
Shimano Corvalus Series:
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Corvalus 400 (CVL400) (Will use stock washer under drive gear)
Shimano Catala Series:
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Catala 400 (CAT400) (Will use stock washer under drive gear)
Shimano Corsair Series:
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Corsair 400 / 400A (Will use stock washer under drive gear)
(Note: This kit does NOT fit the Calcutta "D" Series, Calcutta Conquest, or Calcutta TE "Total Eclipse" models, which use different washer dimensions.)
Installation & Schematic Verification
To ensure correct installation order (alternating metal and carbon washers), please consult the exploded view for your specific reel.
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Schematic Reference: You can view detailed schematics for the Calcutta 400 and other models at www.reelschematic.com.
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Replaces OEM Part Numbers: This kit replaces stock Shimano washers BNT2432, BNT2118, and BNT0665.
Note: When installing, ensure the metal "keyed" and "eared" washers are clean and flat. If the metal washers are warped or discolored from heat, they should be replaced alongside the carbon washers for optimal results.
Product Videos
Custom Field
Product Reviews
2 Reviews Hide Reviews Show Reviews
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Calcutta 400 carbon drag kit
No issues with install. I rated them a 5 so far. We will see once I get a 50"+ musky on them.
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Calcutta Drag kit
Great to have an option to buy in Canada. Having the ability to review older schematics helps alot.

