PSTN KT YAM YZ450F STD A

Piston Kit for 4 Stroke

Enhanced piston pin oiling slots, radial boss machining, and annular grooves for improved wrist pin lubrication

Lightweight piston with a tight piston wall clearance for a quieter running engine

Skirt coated for reduced friction and improved break in performance

Ring land treatment for improved ring seal and oil control

Double bridged forging design where noted

Kit includes piston, rings, wrist pin and pin locks

12.0:1 CR '06-'09 YFZ450 carb. 12.3:1 CR ''12-'13 YFZ450 carb. 12.3:1 CR '09-'13 YFZ450R EFI. 12.3:1 CR '10-'11 YFZ450X EFI. 12.5:1 CR '17 YFZ450 EFI. 12.5:1 CR '14-'24 YFZ450R EFI. 12.6:1 CR '04-'05 YFZ450 carb. 62.00 mm stroke for '04-'05. 63.40 mm stroke for '06-'24. Kit Includes: • Piston #8784DA • Ring Set #RIK95.00 • Wrist Pin #WP029-SP • Retaining Clips #CW20