Yamaha 33D-25389-00-00 Chain Puller Block Assembly

Description:

The Yamaha 33D-25389-00-00 chain puller block is used in motorcycle rear wheel and chain adjustment systems. Commonly installed in Yamaha YZ250F and YZ450F models requiring precise chain tension alignment and rear axle positioning. Maintenance teams, motorcycle technicians, and riders use this part for chain adjustment, rear wheel alignment, and drivetrain maintenance.

Applications:

The Yamaha 33D-25389-00-00 is used in motorcycle drivetrain systems to maintain correct chain tension and alignment by adjusting the rear axle position. It is widely applied in motocross and off-road bikes where proper chain tension, wheel tracking, and drivetrain efficiency are critical for performance and safety.

Technical Specifications:

• Compatible with Yamaha YZ250F and YZ450F models (approx. 2010–2013)
• Product type: Chain puller block / chain adjuster component
• OEM part number: 33D-25389-00-00
• Function: Adjusts rear axle position for chain tension control
• System role: Ensures proper chain alignment and drivetrain efficiency
• Mounting: Installed at rear axle adjuster assembly
• Material: Hardened metal block for durability
• Application: Motorcycle rear wheel and chain drive systems
• Condition: Genuine OEM part, often available as NOS or replacement
• Alternate name: “Puller, Chain 2”

Common Replacements:

• Yamaha 17D-25388-00-00
• Yamaha 1C3-25388-H0-00
• Yamaha 5NY-25388-00-00