KTM 250 EXC F [2014-2022] - Forged pistons

PROX forged pistons for KTM 250 EXC F

The PROX forged aluminum piston is designed to replace the original piston of the KTM 250 EXC F in the 2014 to 2022 model year range. As a forged version, it is suitable for use in 4-stroke engines and offers a precisely defined piston geometry for the specified application.

Function and execution

The flat crown with raised top and four valve pockets is tailored to the specified engine application. The piston operates at standard compression and a compression ratio of 14.4:1. ProX produces piston kits on modern CNC systems.

Technical data

• Brand: PROX
• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 77.97 mm
• Letter oversize: B
• Oversize: +0.01
• Compression ratio: 14.4:1
• Rings Quantity: Set
• Stroke: 4T
• Specificity: Flat crown with raised top / 4 valve pockets

Vehicle assignment

The forged piston is suitable for the KTM 250 EXC F, built between 2014 and 2022.

Scope of delivery and factual information

The piston kit comes with piston rings, piston pins and circlips. The version with a diameter of Ø 77.97 mm, the oversize letter B and oversize +0.01 should be compared with the requirements of the respective engine before assembly.