Honda CRF 250 R (ME 10) [2014-2015] - forged pistons

PROX forged pistons for Honda CRF 250 R (ME 10)

The PROX forged piston is designed as a replacement piston for the Honda CRF 250 R (ME 10) built in 2014-2015. Its production from aluminum using a process used by many manufacturers combines the construction of a forged piston with a design of equivalent original equipment manufacturer quality.

Function and execution

The patented surface treatment helps reduce friction in the cylinder. The flat crown with raised top part and 4 valve pockets is tailored to the specified piston geometry. The piston is designed with a piston ring set.

Technical data

• Brand: PROX
• Piston Type: Forged
• Material: aluminum
• Diameter Ø: 76.77 mm
• Letter oversize: A
• Oversize: STD
• Piston compression: standard
• Standard compression: 13.5:1
• Stroke: 4T
• Specificity: Flat crown with raised top / 4 valve pockets
• Piston rings: set

Vehicle assignment

The PROX forged piston fits the Honda CRF 250 R (ME 10), built between 2014 and 2015. The assignment refers to this vehicle and this complete year of manufacture.

Factual note

The diameter of 76.77 mm, the marking A, the STD version and the standard compression 13.5:1 are particularly important for the selection. Before assembly, the technical dimensions and the intended piston configuration should be compared with the existing engine structure.