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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 : PRO00454A / 1129320001

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 – Manufacturer Ref: 01.7365.A

Forged aluminum piston, developed for engine rebuilding of modern trail and motocross bikes. Its "flat with hollow" design respects the original combustion chamber shapes and allows for standard replacement installation. Ideal for maintaining the behavior and geometry of the cylinder head while integrating a robust part suitable for off-road use.

Brand: PROX
Compression: standard
Diameter: Ø 87.960 mm (oversize letter A)
Material: forged aluminum
Specificity: flat with hollow
Category: Cross — designed for rebuilding and refurbishment

Part compatible with BETA RR 390 4T models (including listed Racing and Enduro versions). This piston integrates into an engine rebuild to restore original tolerances and ensure a good mechanical base when replacing the piston assembly. Check the piston/ring fit and bore specs before installation to ensure a proper fit.

Technical information :

Reference

PRO00454A / 1129320001

Oversize

STD

Compression Ratio

12.5:1

Diameter Ø (mm)

87.960

Engine

Piston diameter

Ø 87,960 mm