Successor article / Alternative article: This article has been replaced by the manufacturer with the current version or is superseded by an equivalent alternative article. The appropriate replacement will be delivered automatically. Fit, function and quality remain unchanged. Delivered article number: M7719114B

Malossi Clutch Bell 107 mm (463 g) – Sport Upgrade for Minarelli with 105 mm Clutch

Here you get a high-quality Malossi clutch bell for common Minarelli 50 ccm engines.

The clutch bell is the outer housing of the centrifugal clutch and accepts clutches with a 105 mm diameter. The inner diameter of 107 mm corresponds to the standard size of the Minarelli clutch bell – ideal if you rely on proven dimensions for your setup, but want to significantly upgrade in terms of material and manufacturing quality.

Especially on popular scooters such as Yamaha Aerox 50, Yamaha Jog or Aprilia SR 50, the dynamic balancing at higher speeds proves its strength: less imbalance, fewer vibrations in the powertrain and a clean, controlled power connection.

Features & Advantages

• Suitable for Minarelli engines – for clutches with 105 mm diameter
• Inner diameter 107 mm (corresponds to the standard size of the Minarelli 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 track
• 100% dynamically balanced – relevant for high-speed use
• Surface hardened by nitriding – increases the wear resistance of the track
• Weight: 463 g
• Type: Sport

Technical Data / Details

• 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

Why this Malossi Clutch Bell?

The combination of forged deep-drawing steel, TIG welded middle part and nitrided surface addresses exactly the typical stresses of a clutch bell: dimensional stability under centrifugal force, weld seam strength during torque shocks and surface wear caused by the clutch shoes. The dynamic balancing is a real plus, especially for sporty setups on Minarelli – e.g., on Yamaha Aerox 50 or Aprilia SR 50 – because imbalances can quickly lead to noticeable vibrations.

Compatibility (Excerpt)

Fits many vehicles with Minarelli engine (107 mm clutch bell inner diameter and 105 mm clutch diameter), e.g., from Yamaha, MBK, Aprilia, Malaguti, KTM, Italjet, Generic, Keeway and others.

• Yamaha: Aerox 50 Cat (2003), Jog 50, Jog RR 50 LC Water, Jog R 50 AC Air, Slider 50 (2004), BWS 50 NG (1999), Spy 50, Giggle 50 4-stroke, Neos 50 4-stroke (Year 07/2007), BWs 50 Original SA231 (2011)
• Aprilia: SR 50 LC Water (1994-1997, 2000), SR 50 Sport LC Water (2000), SR 50 Racing LC Water (2000), SR 50 WWW AC Air (2000), Scarabeo 50 2-stroke (1999-2009), Area 51 50, Rally 50 AC Air, Sonic 50 LC/AC, Gulliver 50 AC Air
• MBK: Nitro 50 Naked 1PL (2013), Booster 50 12 inch 5SA/5YA (2001-2003), Booster Track 50, Ovetto 50 (Year 07/2007), Stunt 50 (2004), Mach G 50 LC/AC, Hot Champ 50 2-stroke, Evolis 50, Sorriso 50
• Malaguti: F10 Cat. 50 (1999-2004), F10 50 Jetline (1999), F12 Phantom 50 AC (2003-2006), F12 Phantom R 50 AC, F15 Firefox AC/LC (2004), Centro 50 Minarelli engine (2008), Ciak 50 2-stroke, Yestarday 50, F10 Wap 50 CPI engine (2004-2008)
• Italjet: Dragster 50, Pista 50, Scoop 50, Yankee 50
• KTM: Ark 50 LC Water, Ark 50 AC Air, Go 50, Quadra 50, Chrono 50, Tempo 50
• Others: Generic Vertico 50 2-stroke, Keeway RY8 50 (2009), Longjia Zero One 50 2-stroke, PGO Big Max 50, Suzuki Katana 50 Di-Tech engine

Assembly & Application Notes

• The clutch bell is placed onto the input shaft on the transmission side and secured with the center nut.
• Check the inner track for damage/scores before installation – this can affect the clutch engagement process.
• After assembly, check the smooth operation of the centrifugal clutch.

Important: Check measurements before purchase

Please verify on the vehicle before purchasing: clutch bell inner diameter 107 mm, clutch diameter 105 mm as well as the engine type Minarelli.

OEM / Comparison Numbers

• 7711124
• M7711124
• 7719114B
• M7719114B
• M.7719114B