Montesa 4rt 300 Piston S3 Racing

Composition & treatment:
• Top quality Aluminum-Silicium alloy
• Casted or forged
• Molybdenum disulfide protective layer.
• Equipped 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