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Motorbike parts and tools

Engine parts & cables

Upper engine

Piston kit Prox Forged

Non-contractual photo

Prox Forged Piston kitRef : PRO00317A / 1121740002

Recommended retail price:235,05 €?

211,50 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionProx Forged Piston kit

Product details :

Features

PROX Forged Piston (manufacturer part number 01.6353.B) designed for the motocross universe. Machined from a specific aluminum alloy and produced by forging, this piston aims to provide mechanical durability suited to the demands of off-road circuits while minimizing friction for enhanced reliability.

Diameter: Ø 87.97 mm (Ø 87.970 mm)
Compression: Standard
Oversize Letter: B (intended for corresponding oversize cylinders)
Material: Aluminum
Number of Rings: Kit (piston delivered with rings)

The forging process gives the piston a more homogeneous structure than cast iron, which improves mechanical resistance against the repeated stresses of motocross. Its finish and controlled diameter facilitate installation and the checking of piston/cylinder clearance. Ideal for engine preparation interventions, it is aimed at mechanics and riders looking for a robust wear part that complies with original/reworked dimensions.

Compatible Motorcycles (examples): KTM 350 SX-F (2025 – 350 cm3), HUSQVARNA FC 350 (2025 – 350 cm3), GAS GAS MC 350 F (2024 – 350 cm3). Before installation, check the oversize specification and perform the recommended break-in and wear checks.

Technical information :

Reference

PRO00317A / 1121740002

Oversize

+0,01

Rings Quantity

Set

Diameter Ø (mm)

87,97

Engine

Piston diameter

Ø 87,970 mm