Piston Kit Compatible with 1987-2006 Yamaha Banshee 350 YFZ350 YFZ350SP 50th Anniversary 2-Stroke 64mm Standard Platinum 2GU-11631-00-94 50-520PK

YAMAHA BANSHEE 350 — STANDARD 64mm PLATINUM SERIES 1987-2006:
• Yamaha Banshee 350 YFZ350 Yamaha 347cc 2-Stroke Parallel-Twin Air-Cooled (1987-2006)
• Yamaha Banshee 350 LE YFZ350LE Limited Edition Yamaha 347cc 2-Stroke (2003-2004)
• Yamaha Banshee 350 SE YFZ350SE Special Edition Yamaha 347cc 2-Stroke (2005-2006)
• Yamaha Banshee 350 SP YFZ350SP 50th Anniversary Edition Yamaha 347cc 2-Stroke (2006)

OEM PART NUMBERS:
• Yamaha: 2GU-11631-00-94 / 2GU11631-0094
• WSM: 50-520PK

WSM Platinum Piston Kit — Yamaha Banshee 350 YFZ350 Standard 64mm:
WSM Platinum Series piston kit for the Yamaha Banshee 350 at standard 64mm bore. Platinum piston walls are treated with a non-abrasive coating that reduces heat and friction for extended piston life. Hardened tops and enhanced skirt coating compared to standard WSM series. Includes 2 pistons with ring sets, wrist pins, and E-clips. For standard bore (un-bored) cylinders only.
⚠️ IMPORTANT: For standard 64mm bore cylinders ONLY. For overbored cylinders, use 50-520-66 (66mm) or 50-520-68 (68mm) kits.