ATHENA racing long stroke crankshaft 51.10 14 pin 52.50mm for Yamaha YZ 85

The ATHENA Racing Crankshaft Long Stroke 51.1 mm with Ø 14 mm Pin is designed for motorcyclists seeking high performance and immediate engine response. With a stroke of 51.10 mm and a maneuvering radius of 25.55 mm, this crankshaft offers an optimal balance between power and control, making every maneuver an exhilarating experience.

Compatibility with connecting rod head bearings sized 20x26x13.8 mm ensures excellent stability, while the pin diameters, both on the pulley side and the flywheel side, of 20 mm, guarantee perfect integration with the transmission system. The piston pin diameter of 18 mm and the connecting rod head diameter of 20 mm contribute to a robust and durable connection, essential for track performance.

With a connecting rod length of 97.60 mm and a connecting rod foot width of 14 mm, this crankshaft is designed to withstand the most intense stresses, while the total shoulder width of 45 mm provides an even distribution of forces at play. The pulley side pin length of 52.50 mm and the flywheel side pin length of 61 mm complete a design aimed at maximizing engine efficiency.

Finally, with a spacer thickness of 20 mm, this crankshaft integrates perfectly into your system, allowing you to push your motorcycle to the limit. Choosing the ATHENA Racing Crankshaft means investing in a component that transforms every ride into an adrenaline-pumping experience, perfect for those who demand more.

• Stroke: 51.10 mm
• Maneuvering radius: 25.55 mm
• Compatibility with connecting rod head bearings: 20x26x13.8 mm
• Pin diameter (pulley side and flywheel side): 20 mm
• Piston pin diameter: 18 mm
• Connecting rod head diameter: 20 mm
• Connecting rod length: 97.60 mm
• Connecting rod foot width: 14 mm
• Total shoulder width: 45 mm
• Pulley side pin length: 52.50 mm
• Flywheel side pin length: 61 mm
• Spacer thickness: 20 mm

Race Use Only Product - Not intended for road use