MALOSSI – Roller weights 25 x 15.9 mm, 12 g (8 pieces) – ref. 6615452.G0

Technical replacement by MALOSSI for urban scooter variators. These rollers are made from CPT according to a specific formula to provide controlled wear and smooth circulation in the roller holder. Supplied in a set of 8 pieces, this kit retains the original dimensions for easy and reliable installation.

• Diameter: 25 mm
• Width: 15.9 mm
• Number of rollers: 8
• Weight: 12 g
• Brand: MALOSSI
• Manufacturer reference: 6615452.G0

Operation and adjustment

When rotating, the mass of the rollers generates a centrifugal force that drives the movement of the variator. Heavier rollers increase this force and shift the pulley earlier, while lighter rollers delay the engagement, influencing the RPM during acceleration and recovery. Choose the weight according to your riding style to keep the engine within its optimal RPM range.

Compatibility — Used notably on the PIAGGIO MP3 400 SPORT (2025), MP3 400 HP (2024), and MP3 400 (2024). Check the diameter and width against your original rollers before installation.

A practical choice for urban scooter riders looking for a technical replacement part that is easy to install and designed to last.