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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 : PRO00451A / 1129319001

Recommended retail price:235,06 €?

211,50 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionProx forged Piston kit

Product details :

Features

PROX forged piston designed for cross displacements, made of aluminum and intended to replace the original piston during a rebuild. Its flat face with hollow center reproduces the geometry of the combustion chambers to maintain the original stroke and compression. This piston is offered in oversize A to fit honed bores.

Manufacturer reference: 01.7355.A
Diameter: Ø 87.960 mm (87.960)
Compression: standard
Material: aluminum
Specificity: flat with hollow (face plate with hollow)

Designed for a rebuild equivalent to the original equipment, this piston integrates into cross engines where resistance to stress and bore precision are essential. Always check compatibility with your engine and replace rings, pins, and clips according to manufacturer recommendations during installation.

Common compatibilities: BETA RR 350 4T RACING (2024), BETA RR 350 4T (2024), BETA RR 350 4T ENDURO RACING (2019) — check the model year and bore before ordering.

Technical information :

Reference

PRO00451A / 1129319001

Oversize

STD

Compression Ratio

13.2:1

Diameter Ø (mm)

87.960

Engine

Piston diameter

Ø 87,960 mm

Material

Aluminum

Specificity

Flat with hollow

Piston type

Forged

Compression piston

Standard

Compatible motorbikes

BETA5 compatible models

RR 350 4T ENDURO EFI - 2015/2019RR 350 4T ENDURO EFI RACING - 2016/2018RR 350 4T RACING - 2020/2024RR 350 4T - 2020/2024RR 350 4T ENDURO RACING - 2019/2019