Vertex PRO Full forged Size A Piston kitRef : 9138DA / 1095230001

VERTEX Pro Version Forged Piston – Manufacturer's reference: 23138A. Made from forged aluminium, this Pro Version piston is aimed at motocross riders and roadster enthusiasts looking for a reliable replacement part suitable for rebuilds. Supplied complete with rings, circlips, and pin, it allows for a clean and secure installation during a cylinder refurbishment.

• Bore diameter: 66.40 mm
• Piston diameter: Ø 66.340 mm (oversize letter: A)
• Compression: Standard
• Material: Forged aluminium
• Supply: rings, circlips, and pin included

The choice of a forged piston provides controlled geometry and a homogeneous metal structure, suitable for the mechanical stresses encountered off-road as well as on the road. The oversize A indicates the machining intended for a specific re-boring; please check the bore size of your cylinder before installation. Compatible with several 250 cc models, it is particularly suited for the following machines:

• HONDA CR 250 R (ME03) 2007
• HM MOTARD 250 (2T) 2007
• HM CRE 250 2006

For optimal disassembly and assembly, check the piston/cylinder clearance, bore, and condition of the ring seats. This VERTEX Pro Version piston is a robust option when it comes to refurbishing a top-end on 250 2-strokes.