Wiseco PK1018 (0903-0360) 83.00 mm Forged Piston Kit w/ Gaskets – Yamaha 350 Raptor/Warrior/Grizzly

Wiseco PK1018 (0903-0360) Forged Piston Kit w/ Gaskets – 83.00 mm – Yamaha 350

🛠️ Description
Give your Yamaha 350 a fresh, high-performance top end with the Wiseco PK1018 forged piston kit. Built from race-proven 2618 aluminum alloy with ArmorGlide® skirt coating, this 4-stroke piston delivers durability, excellent heat control, and smooth, quiet operation. Matched rings and gaskets simplify your rebuild and help restore crisp compression and throttle response.

✅ What’s Included

• (1) Wiseco Piston – 83.00 mm bore (Ø 82.95 mm)

• (1) Ring Set – #3268XC

• (1) Wrist Pin – #S376

• (1) Circlip/Retainer Set – #CW19

• (1) Top-End Gasket Kit – #W5746

📦 Fitment (Yamaha)

• YFM350 Raptor (2005–2013)

• YFM350X Warrior (1987–2004)

• Grizzly 350 4x4 / 4x2 / IRS (2008–2013; select 2008–2011 IRS models)

• YFM350U Big Bear 2x4 (1996–1999)

• YFM350FW Big Bear 4x4 (1989–1999)

• Big Bear 350 Hunter Edition 4x4 (1999)

• Big Wheel 350 (1999)

🛡️ Warranty Info
Backed by Wiseco’s limited warranty against defects in materials and workmanship. See manufacturer terms for details.

🔑 Key Features

• Forged 2618 aluminum piston for strength and longevity

• ArmorGlide® coated skirts reduce friction and wear

• 83.00 mm bore, 64.50 mm stroke (OEM stroke)

• 10.25:1 compression ratio for responsive power

• Complete top-end kit for a streamlined rebuild

• Designed specifically for 4-stroke Yamaha 350 applications

📝 Notes

• Wiseco rings are application-specific; use only the included/matching ring set.

• Cylinder sleeve not included (must be purchased separately if required).