The entire S3 team will be on Christmas holidays from December 24th to January 7th, 2026, inclusive. Orders received during this period will be shipped starting January 8th, 2026. Thank you for your understanding, and we wish you a Merry Christmas and a Happy New Year.

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PISTON MONTESA

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PI-MON4-80-R
PI-MON4-80-R

PISTON RACING 4RT ( COMPLET) 80mm

Ø: 79,975, Type: S3 280cc
Suitable for:
MONTESA
4RT 280 to
4RT 300 2016 to 2020
COTA 4RT 300 2016 to 2020
PI-MON4-815-R
PI-MON4-815-R

PISTON RACING 4RT ( COMPLET) 81,5mm

Ø: 81,475, Type: S3 300cc
Suitable for:
MONTESA
301 RR 300 2021 to current
COTA 4RT 310 2019 to current

PISTON MONTESA

PI-MON4-X

Composition & treatment:
• Top quality Aluminium-Silicium alloy
• Casted or forged
• Molybdenum disulfide protective layer.
• Equiped with nitrided steel rings

Features:
• Lightweight and resistant
• Limits the vibrations
• The engine will build up revs faster

The kit includes:
• 1 Piston
• 2 Rings
• 1 Pin
• 2 Snap clips

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