Piston Pin Bearing Malossi MHR 12x17x16mm – reliable needle bearing for the upper connecting rod

The Piston Pin Bearing Malossi MHR 12x17x16mm is a precision-fit bearing for the upper connecting rod and is designed for 12 mm piston pins. Especially in 2-stroke setups, a clean, play-free connecting rod bearing is important – for smooth engine operation and a durable connection between the connecting rod and piston. Ideal as a replacement in case of wear or during the rebuild of your engine, e.g., for models such as Aprilia RS 50, Yamaha Aerox 50 or Vespa ET2 50 (depending on version/engine).

Features & Advantages

• Dimensions: 12 x 17 x 16 mm
• For: 12 mm piston pin
• Application area: piston pin bearing / upper connecting rod bearing
• Brand: Malossi MHR
• Proven quality for reliable fit and function

Technical Details

• Product type: piston pin bearing (needle bearing) / connecting rod bearing
• Dimensions: 12x17x16 mm
• Compatibility: for engines with 12 mm piston pin
• OEM number (for comparison): 6611785B

Compatibility (Vehicles)

Fits many 50cc 2-stroke vehicles – including those from Aprilia, Yamaha and Vespa. Examples (excerpt from the list):

• Aprilia: RS 50 AM6-engine 1994-2005, SR 50 Racing LC water 2000, SR 50 R LC water 2005, Area 51 50
• Yamaha: Aerox 50 Cat 2003, Jog 50, Jog RR 50 LC water, Zuma 50 vertical engine, DT50R (among others 1997/2002)
• Vespa: ET2 50 2-stroke, LX 50 2-stroke, PK 50 S 2-stroke 1982-1986, V 50 R 2-stroke 1969-1983

Important: The used 12 mm piston pin or the engine version (e.g., AM6) is always decisive. Please check the dimensions 12x17x16 mm as well as the comparison number 6611785B before purchasing.

OEM/Comparison Numbers

• 6611785B

Search terms: piston pin bearing, upper connecting rod bearing, connecting rod bearing, connecting rod bearing

Why Malossi MHR?

Malossi MHR stands for high-quality components in the scooter and moped sector. This piston pin bearing is designed for reliable operation – perfect if you want to rely on clean precision fit and long-lasting function in your setup.

Whether you are rebuilding an Aprilia RS 50, getting your Yamaha Aerox 50 fit again, or working on a Vespa ET2 50: with the correct dimensions, this bearing is a solid choice for replacement in the upper connecting rod.

Whether you are rebuilding an Aprilia RS 50, getting your Yamaha Aerox 50 fit again, or working on a Vespa ET2 50: with the correct dimensions, this bearing is a solid choice for replacement in the upper connecting rod.

Whether you are rebuilding an Aprilia RS 50, getting your Yamaha Aerox 50 fit again, or working on a Vespa ET2 50: with the correct dimensions, this bearing is a solid choice for replacement in the upper connecting rod.