10S2L ROLLER CLUTCH ASSEMBLY (RD18735)

Product Description

Shimano 10S2L Roller Clutch Assembly (RD18735)

The Shimano 10S2L Roller Clutch Assembly (RD18735) is a precision one-way bearing system that provides the "Instant Anti-Reverse" function in Shimano’s high-performance spinning reels. This assembly ensures that the rotor stops immediately without any "back-play," allowing for rock-solid hooksets and a more connected feel during the retrieve.

The 10S2L is the modern part number that has replaced the legacy RD18735 designation in Shimano's global inventory system.

Product Specifications

• Part Name: Roller Clutch Assembly (R/C ASY)

• Shimano Part Number: 10S2L

• Schematic Part Number: RD18735

• Material: Corrosion-Resistant Alloy and Stainless Steel Rollers

• Function: Instant Anti-Reverse / One-Way Clutch

Compatible Reel Models

The 10S2L (RD18735) is found in many of Shimano’s flagship and mid-tier spinning reels. It is a direct fit for:

• Shimano Stella: 2500HGK, C3000XGK, and other FK/GK series models.

• Shimano Vanford: VF2500, VF4000XGF.

• Shimano Twin Power: 4000XG FD (TP4000XGFD).

• Shimano Stradic: Various Ci4+ and FL models (Verify by schematic).

Technical Note: If your reel handle slips or turns backward in freezing temperatures, the roller clutch is usually at fault. This typically happens when too much grease has migrated into the assembly, causing the internal rollers to stick. Replacing the unit is the most reliable way to restore factory performance.

Maintenance & Lubrication Recommendation

The roller clutch is a high-sensitivity component. Never use standard reel grease inside this assembly, as the thick viscosity will prevent the springs from pushing the rollers into the locking position.

• Proper Lubrication: Use a single drop of an ultra-light oil, such as Deuthlon Power Cast Oil or Shimano Bantam Oil.

• Cleaning: If the assembly is dirty but not damaged, soak it in high-grade isopropyl alcohol, dry it thoroughly with compressed air, and re-oil lightly.

• Critical Alignment: When installing the 10S2L, pay close attention to the Roller Clutch Inner Tube (RD18737). If the tube is flipped upside down, the anti-reverse will not engage.

Why Choose Genuine Shimano 10S2L?

• Zero Tolerance Fit: Machined to exact specifications to prevent "rotor slap" or vibration during high-speed retrieves.

• Environmental Sealing: Designed to work in tandem with Shimano’s X-Protect and CoreProtect systems to shed water and salt.

• Pre-Assembled Convenience: Comes as a complete unit with internal springs and rollers pre-aligned for immediate drop-in replacement.