44mm Piston Assembly Kit for BC415, BC520, CG520, TL52 and 52cc Brushcutters

Description

This BC415 44mm piston kit is a Winzor aftermarket piston assembly for compatible Chinese-manufactured brushcutters and strimmers with a 44mm cylinder bore. This bore size commonly appears on TL52, CG520, BC520, BC550 and other two-stroke machines sold as 52cc models.

BC415 44mm piston kit compatibility

The piston set suits compatible engines marked:

• BC415 44mm
• BC520
• BC550
• CG520
• TL52
• Generic 52cc brushcutters with a 44mm cylinder

The package contains:

• 44mm piston
• Piston rings
• Piston pin
• Small-end needle bearing

Chinese brushcutter model names often vary between importers. For example, some sellers use the BC415 name for both 40mm and 44mm engine versions. Therefore, measure the original piston or cylinder bore before ordering. Also compare the piston height, pin position, ring-pin layout and crown shape.

Installation checks

Before fitting the piston, inspect the cylinder surface for scoring, transferred aluminium and damaged ports. A damaged cylinder can quickly mark a new piston. In addition, check the connecting rod and crankshaft bearings for side play or rough movement.

Fit the piston in the correct direction and position each ring against its locating pin. Then lubricate the piston, rings and needle bearing with clean two-stroke oil before inserting the assembly into the cylinder. Finally, rotate the crankshaft by hand and confirm that the piston moves freely.

Browse additional brushcutter and strimmer parts. Manufacturer information for the 44mm brushcutter piston confirms the supplied piston components.