Kawasaki GPz1000RX Ninja Piston Kit - Wiseco - 111 Piston Kit, 75.50 mm Bore, 11:1 CR - `86-`00. A complete forged piston kit built for the GPz1000RX/GTR1000 (1986–2000) that supplies the components needed to refresh or modify your engine’s compression and bore size.

This Wiseco Forged Series kit is intended for 4-stroke applications and offers a robust replacement piston set engineered for durability and consistent fit. Each kit includes a forged piston optimized for strength under high-stress use, plus the wrist pin, piston rings, and circlips required for installation. The forged construction improves service life compared with cast pistons, and the specified 11.0:1 compression ratio with a 75.50 mm bore is sized to match the GPz1000RX/GTR1000 factory revisions and common rebuild choices.

Features

• Forged 4-stroke piston design for increased strength
• Complete kit: piston, wrist pin, rings, and circlips included
• 75.50 mm bore size, 11:1 compression ratio (111 kit)
• Application: Kawasaki GPz1000RX / GTR1000 model years 1986–2000
• Manufactured by Wiseco to OEM-fit dimensions

If you have questions about fitment, installation, or compatibility with your build, call us directly — we’re happy to help. We offer installation and customization services at two locations: Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) or 562-981-6800 (CA).

If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov