Tuningsworld 44mm 60cc Top End Kit for Yamaha PW50 & QT50 – Cylinder, Piston, Gasket Rebuild Kit

Revitalize Your Yamaha PW50 or QT50 with a Complete Top-End Rebuild Kit

If your small-displacement ride is losing a bit of its bite, a well-timed top-end refresh can bring back crisp responses and smoother idling. The Tuningsworld 44mm 60cc Top End Rebuild Kit is designed to simplify this maintenance task with a comprehensive package built for real-world riding. Rather than a patchwork of parts, this kit offers a cohesive collection that supports reliable operation across a wide range of conditions, from city commutes to weekend trail sessions.

Designed for specific Yamaha models, this kit fits PW50 bikes from 1981 through 2009 and QT50 models from 1979 through 1987. It ships with a complete set of components you’ll need for a proper top-end refresh, so you can approach the job with clarity and confidence rather than hunting for individual pieces late in the process.

• 1x Cylinder Block
• 1x Cylinder Head
• 1x Piston
• 2x Piston Rings
• 2x Circlips
• 1x Piston Pin
• 1x Pin Bearing
• 1x Head Gasket
• 1x Base Gasket
• 1x Spark Plug
• 4x Cylinder Studs
• 4x Stud Nuts

Premium Materials, Real-World Durability

The cylinder block is crafted from durable cast iron and finished with a black powder coating to assist with heat dispersion and longevity. The piston is precision-machined from a high-strength 44mm aluminum alloy, engineered to stay lightweight while resisting heat buildup and pressure. This combination is intended to support consistent compression and long-term performance under demanding riding conditions.

Performance, Reliability, and Easy Fit

Engineered to restore compression and bring renewed power to your PW50 or QT50, the kit uses high-quality components that are designed to endure heat and pressure. It is sold as a direct OEM replacement, aiming for a straightforward installation with minimal modification. As with any rebuild, following proper torque specs and break-in guidelines helps maximize durability and reliability over time.

Real-Life Use Scenarios

Riders tackling aging powerplants can expect crisper starts, improved throttle response, and steadier idle after a thorough break-in. The kit’s parts are chosen to support a balanced, smooth feel across accelerations, climbs, and steady cruising—without promising immediate miracles, but offering a credible path to renewed engine behavior.

Notes on Expectations

Individual results vary with overall bike condition and maintenance history. This kit is designed to provide a solid top-end refresh when installed and cared for according to standard guidelines.