Namura Technologies 09-B074-1 Wrist Pin Bearing - 22 x 27 x 22.8mm

Top-End needle bearings are the key components in transmitting the engine's explosive force from the crown of the piston to the rotating assembly below. Namura's bearings are manufactured from SCM415 Chromoly Steel and treated using a process called carbonnitriding; this enhances the fatigue strength and heat dissipating capacity of the cage. The overall bearing structure and high rigidity allows them to withstand the significant stress levels created by varying/high RPMs and the impact of an engine's stroke. Another key feature that our bearing assemblies have is a silver coated cage. Yes, the cage that holds our needle bearings is electroplated first with copper and then a second coating of silver to better resist the erosive materials it is exposed to. This coating also decreases the friction between the cage and the bearings allowing for longer assembly life and increased reliability..

Vehicle Fitment:

2000-2002 Yamaha GP1200 WaveRunner GP1200
2003-2008 Yamaha GP1300 WaveRunner GP1300R
1998-2000 Yamaha GP800 WaveRunner GP800
2003-2005 Yamaha GP800A WaveRunner GP800R
1999-2000 Yamaha XA1200 WaveRunner XL12 LTD
2002-2004 Yamaha XA1200A WaveRunner XLT1200
2000-2001 Yamaha XA800 WaveRunner XL800
2002-2003 Yamaha XA800A WaveRunner XLT800
2000-2001 Yamaha (Boats) XRT1200 XR1800