Wiseco 4304M07800 Kawasaki Forged Piston Kit - GPz1100 ZX/LTD1100 78mm 10.25 1

The Wiseco 4304M07800 is a high-performance forged piston kit engineered for the 1983–1984 Kawasaki GPz1100, ZX1100, and LTD1100 platforms. Featuring a 78.00mm oversize bore and a 10.25:1 compression ratio, this kit delivers a direct upgrade over factory cast pistons for rebuilds demanding greater strength and durability.

Wiseco is the only aftermarket piston manufacturer in the United States that produces pistons exclusively through the forging process. Each piston is forged from high-silicon aluminum alloy, resulting in a superior strength-to-weight ratio compared to cast alternatives. Dedicated aerospace alloy forgings resist the thermal and mechanical stresses inherent to high-performance 4-stroke motorcycle engines.

Key Features:

• 78.00mm oversize bore — requires cylinder boring or sleeving prior to installation
• 10.25:1 compression ratio for optimized power output
• Armor Glide skirt coating reduces friction and noise for increased horsepower
• Horizontal slot-pin oiling reduces friction and provides scuff resistance
• Pressure seal groove for maximum ring seal at operating temperature
• Race-ready dome finish with smooth edges for improved combustion flow
• Forged from high-silicon aluminum alloy for maximum strength and dependability

Kit Includes:

• Forged piston
• 3071XG 78.00mm piston ring set
• S524 18.00mm wrist pin
• Circlips

Note: This is an oversize piston. Cylinder boring or sleeving is required before installation. Ring set cross-reference: 3071XG. OEM part cross-reference: 13001-1397.