Malossi Clutch Bell Sport 107 mm (463 g) – stable, balanced & wear-resistant for Minarelli

The Malossi clutch bell is the outer housing of the centrifugal clutch for Minarelli 50 ccm engines and accepts clutches with a 105 mm diameter. With its inner diameter of 107 mm, it corresponds to the standard dimension of the Minarelli clutch bell – ideal if you rely on reliable fit and clean function in your setup.

Especially for high-revving scooters such as Aprilia SR 50 or Yamaha Aerox 50, the 100% dynamic balancing is a real advantage: less imbalance means fewer vibrations in the drivetrain – particularly relevant in high-RPM use. Additionally, there is the nitrided, surface-hardened running track, which significantly reduces wear caused by the clutch shoes.

Product Properties / Features

• Clutch bell for Minarelli engines, suitable for clutches with 105 mm diameter
• Inner diameter 107 mm (corresponds to the standard dimension of the Minarelli clutch bell)
• Outer bell made of Fe P04 deep-drawing steel, forged
• Middle part made of carbon steel, manufactured from round material and TIG-welded
• Vibration band welded with 3-point 120° pattern – for uniform power transmission to the running track
• 100% dynamically balanced (reduces vibrations at high speeds)
• Surface-hardened by nitriding – increases the wear resistance of the running track

Why this Malossi Clutch Bell?

The combination of forged deep-drawing steel, TIG-welded middle part, and nitrided surface targets exactly the typical stresses of a clutch bell: dimensional stability under centrifugal force, weld seam strength during torque shocks, and surface wear from the clutch shoes. Especially on setups in the style of Yamaha Aerox 50 or Aprilia SR 50, this results in noticeably smoother and more stable driving behavior.

Technical Data / Specifications

• Product Category: Clutch bell
• Type: Sport
• Inner Diameter: 107 mm
• Suitable for Clutch Diameter: 105 mm
• Weight: 463 g
• Outer Bell Material: Fe P04 deep-drawing steel (forged)
• Middle Part Material: Carbon steel (TIG-welded)
• Surface Treatment: Nitriding
• Manufacturer: Malossi

Compatibility (Vehicles / Models)

The clutch bell fits all common Minarelli engine scooters 50 ccm from numerous manufacturers, including Yamaha, MBK, Aprilia, Malaguti, Beta, KTM, Benelli, Italjet, Adly, Aeon, Motowell and many others. The requirement is the Minarelli engine with a 107 mm clutch bell inner diameter and 105 mm clutch diameter.

• Aprilia: Area 51 50; Scarabeo 50 2-stroke 1999-2009; SR 50 Racing LC water 2000; SR 50 LC water 1994-1997; Sonic 50 AC air; Amico 50 GL; SR 50 AC air 1994-1997; Rally 50 LC water; Sonic 50 LC water; Gulliver 50 LC water
• Italjet: Yankee 50; Scoop 50; Dragster 50; Pista 50
• KTM: Quadra 50; Tempo 50; Chrono 50; Ark 50 AC air; Ark 50 LC water
• Longjia: Zero One 50 2-stroke
• MBK: Nitro 50 1999; Forte 50; Flipper 50; Stunt Naked 50; Nitro Naked 50 2013; Nitro 4 50 4-stroke 2014; Booster Naked 50 13 inch; Booster 50 12 inch 5SA 5YA 2001-2003; Booster 50 One 2DW; Booster 50 NG 1999
• Malaguti: F10 Wap 50 2004-2008; Centro 50 Minarelli engine 2008; F10 Cat. 50 1999-2004; Yestarday 50; Ciak 50 2-stroke; F15 Firefox AC air 2004; F10 50 Jetline 1999; F12 Phantom 50 LC water 2000-2004; F12 Phantom R 50 AC air; F12 Phantom 50 AC air 2003-2006
• Yamaha: Axis 50; Aerox 4 50 4-stroke; Vino Classic 50; Why 50; Aerox 50 1999; Zuma II 50 standing engine; BWS 50 12 inch 2004; Aerox 50 Cat 2003; BWs 50 Easy 2DW 2013; Aerox R 50 Naked 2013

Installation & Application Notes

• The clutch bell is pushed onto the input shaft on the transmission side and secured with the central nut.
• Before installation, check the inner running track for damage – grooves can affect the clutch engagement process.
• After installation, check the smooth operation of the centrifugal clutch.

Important Note Before Purchase

Before purchasing, please be sure to check and compare the clutch bell inner diameter (107 mm) and the clutch diameter (105 mm) of your installed centrifugal clutch, as well as the engine type (Minarelli) on the vehicle.

OEM/Manufacturer Part Numbers

• 7719114B
• M7719114B
• M.7719114B