Wiseco PWR100665 Garage Buddy Complete Engine Rebuild Kit 66.50mm Bore

The Wiseco PWR100-665 Garage Buddy Complete Engine Rebuild Kit is a comprehensive top-end and bottom-end rebuild solution for the Yamaha YFZ350 Banshee (1987–2006) with a 66.50mm bore (+2.50mm over stock). Everything needed for a full engine overhaul is included in a single box, saving time sourcing individual components.

What's Included:

• Crankshaft and rod assembly — engineered in-house with double-forged connecting rods for smooth rotating assemblies and long-term durability
• OEM-quality main bearings — precision-fit for reliable bottom-end performance
• Complete gasket set — all engine gaskets, seals, and O-rings for dependable OEM-level sealing
• Wiseco ProLite 2-stroke forged piston kit — includes piston, ring(s), wrist pin, clips, and small end (top end) bearing
• Wiseco hour meter with mounting bracket and decal — track engine hours and monitor critical service intervals

Key Features:

• All-forged bottom-end construction — 100% forged crankshaft components for maximum strength and reliability
• Wiseco crankshafts are designed entirely by in-house engineers who control all assembled dimensions, clearances, materials, and specifications
• Forged piston manufactured from aerospace-grade aluminum for superior impact resistance, fatigue resistance, and material strength versus cast alternatives
• Engineered to meet or exceed OEM specifications for fit, sealing, and performance
• Designed as a complete rotating and reciprocating rebuild kit — no need to source top-end and bottom-end parts separately

Wiseco's Garage Buddy kits are purpose-built for powersports enthusiasts who demand proven performance and reliability from a trusted American manufacturer with over 80 years of motorsports heritage.