Product Description

SHIMANO 107PL DRAG CLICK RATCHET (RD11531)

The "Soundboard" of Your Drag System

The Shimano 107PL Drag Click Ratchet (Part No. RD11531) is a specialized alloy gear found on the main shaft of many mid-range to high-end Shimano spinning reels. Located directly underneath the spool, this component serves as the stationary "track" that the click pin (inside the spool) bounces against when a fish takes line.

While the pin inside the spool creates the action, this ratchet provides the teeth. If your drag is silent or feels inconsistent, but the pin inside the spool looks fine, the teeth on this ratchet may be worn smooth. Additionally, because it is keyed to the main shaft, it plays a structural role in stabilizing the spool stack during a fight.

Product Specifications

• Part Name: Drag Click Ratchet (Ratchet Washer)

• Manufacturer: Shimano

• Part Number (MPN): RD11531

• Schematic Code: 107PL

• Material: Aluminum / Light Alloy (Silver/Grey)

• Installation Position: On the Main Shaft (Under the Spool, usually on top of the Spool Support)

Compatible Models

This part is standard equipment on the popular "Generation I" CI4 reels and the "F" generation of core Shimano reels (approx. 2008–2013).

• Shimano Stradic Series:

  • Stradic 2500 FI, 3000 FI, 4000 FI

  • Stradic CI4 2500 F, CI4 3000 F, CI4 4000 F (The original CI4, not the CI4+)

• Shimano Sustain Series:

  • Sustain 2500 FE, 3000 FE, 4000 FE

• Shimano Saragosa Series:

  • Saragosa 3000 F, 4000 F (Original F Series)

• Shimano Twin Power:

  • Twin Power 2500 FC, 4000 FC

• Shimano Biomaster:

  • Biomaster 2500 FB, 4000 FB

Installation & Reference

To ensure this is the correct ratchet for your reel, please cross-reference the part number RD11531 or the schematic code 107PL with your reel's service diagram.

• Schematic Diagrams: For detailed PDF schematics and part location verification, please visit www.reelschematic.com.

• Alternate Part Number: RD11531

Installation Tip:

1. Keying: The center hole of this ratchet is not perfectly round; it has flat sides to match the flat spots on the Main Shaft. You must align these flats perfectly before sliding it down, or it will sit too high and prevent the spool from seating.

2. Orientation: The teeth (serrations) must face upward towards the spool. If you install it upside down, the click pin will have nothing to hit, and your drag will be silent.

3. Spool Washers: This part usually sits directly on top of the Spool Support (plastic or metal collar) and underneath the Spool Adjusting Washers (the thin black or transparent shims used to adjust line lay).