Malossi Piston Pin Bearing 12x15x15 mm – reliable mounting for 12 mm piston pins

With the Malossi piston pin bearing 12x15x15 mm, you get a precision-fit needle bearing for 12 mm piston pins. It ensures a clean, smooth connection between the piston pin and the connecting rod eye – exactly what you need during a revision or when replacing worn parts. Especially for popular 50ccm setups such as Yamaha TZR 50, Aprilia RS 50, or Derbi 50, a high-quality piston pin bearing is crucial for reliable operation.

Product Features / Advantages

• Brand: Malossi
• Dimensions: 12 x 15 x 15 mm
• For: 12 mm piston pins
• Purpose: precision-fit replacement during engine maintenance/overhaul
• Proven Quality: for reliable function and long durability

Technical Data / Specifications

• Inner Diameter: 12 mm
• Outer Diameter: 15 mm
• Width: 15 mm

OEM Numbers (for comparison purposes only)

• 66 3973B
• 663973B

Compatibility / Vehicles

Fits many vehicles – e.g. Aprilia RS 50, Yamaha TZR 50, or various Derbi 50 models – but also many other models from the list below:

• Aprilia: MX 50 AM6 engine; Tuono 50 AM6 engine; RS 50 AM6 engine Derbi engine 1994-2006; SX 50 Derbi engine; Classic 50 AM4 AM5; RS4 50 Derbi engine SBK Replica 2011, 2017; RX 50 AM6 engine Derbi engine 1999-2006, 2017; Red Rose 50 AE 1991-1997
• Generic: X-enduro 50; TR 50 SM Competition One 2016; Trigger 50 SM
• Gilera: H@k Enduro 50 VTBC08; GSM 50 Derbi engine Morini engine; H@K 50 Morini engine; RCR 50 ZAPG11D ZAPABA01 ZAPG11A 2005-2011; Zulu Enduro 50; SMT 50 SM ZAPG12D ZAPG12A 2005-2010; SMT 50 SM Racing 2011
• Keeway: TX 50 2010-2013; X-Ray 50 Supermoto 2007-2008
• MBK: X-Limit Enduro 50 2003; X-Power 50 2000-2003; X-Limit SM 50 2000-2003
• Malaguti: MGX 50 Morini T4 1986-1992; XTM 50; Grizzly 50 RCX 10 Morini 2001-2002; Drakon Naked 50; XSM 50
• Peugeot: Trekker 50; Zenith 50; Metal-X 50; X-Fight 3 50 2-stroke 2002; Looxor 50; Buxy M 50; Reggea 50 VGA427; Speedfight 1 50 AC air; Elystar 50 TSDI; TKR 50 307 WRC
• Piaggio: Grillo Moped; Bravo Moped; Ciao P Moped; SI Moped; Citta Moped; Ciao Moped; Ciao PX Moped; Boss Moped
• Puch: Puch Classic
• Rieju: Drac 50 AM6 1997; Spike 50; SMX 50; RS-1 Evolution 50; MRX 50; Spike 2 50; MRT 50; MRX PRO 50; RS-2 Matrix 50; Spike X 50
• Vespa: Vespa Citta Moped
• Yamaha: TZR 50 R1 R1 RR 2002-2003; DT50R 1D4 2C2 2C3 5BK 5EC SM X 1997, 2002; DT50M 1JY 1M 2F 3T 4E 5M 1986-1992; DT50E 1RE 1987

Why Malossi?

Malossi stands for proven quality in the scooter and geared moped sector. If you value precision-fit replacement parts for your Aprilia RS 50, Yamaha TZR 50, or a Derbi 50 setup, this piston pin bearing is a solid choice.