Dr. Pulley Performance Variator Assembly for 250cc 4-stroke water-cooled CN250 172mm engines.

• Specially Designed Ramp Shape
• Extended Ramp Length
• Adjustable Boss Length
• Racing Type Ramp Plate

• Includes Instructions
• Includes Sliders
• Does Not Included Roller Weights
• Number of Splines: 21
• Drive Face Outer Diameter (A): 128mm
• Boss Inner Diameter (C): 17mm
• Boss Outer Diameter (B): 27mm
• Ramp Plate Inner Diameter (D): 17mm
• Fan Inner Diameter Peak to Peak (H): 15mm
• Fan Inner Diameter Valley to Valley (G): 16.5mm

250cc 172mm 4-stroke, Honda Helix (CH250 / CN250), Honda Reflex NSS250