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Motorbike parts and tools

Engine parts & cables

Upper engine

Piston kit Prox forged

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Prox forged Piston kitRef : PRO00443A / 1129313002

Recommended retail price:211,62 €?

190,40 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionProx forged Piston kit

Product details :

Features

PROX Forged Piston (manufacturer part number 01.4424.B) designed for Cross applications. Made from forged aluminum, this piston meets the robustness and machining requirements necessary to restore a cross engine without compromising the combustion chamber geometry. Its "Flat with Raised Top" design offers a skirt and crown topology suitable for modern cylinder configurations.

Diameter: Ø 95.980 mm (oversize letter B)
Compression: Standard
Material: Forged aluminum
Specificity: Flat with Raised Top (flat crown with bump)
Reference: 01.4424.B
Usage: replacement pistons for engine refurbishment on cross bikes

This piston is intended for modifications and replacements on off-road motorcycles where bore precision and machining quality are paramount. Check compatibility with your cylinder and manufacturer tolerances before installation. Examples of compatible models: KAWASAKI KX 450 X (2026 and 2025), KAWASAKI KX 450 (2026) — refer to the dimensions and oversize indicated to validate installation.

Technical information :

Reference

PRO00443A / 1129313002

Oversize

+0.01

Compression Ratio

12.5:1

Diameter Ø (mm)

95.980

Engine

Piston diameter

Ø 95,980 mm