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WOSSNER offers this connecting rod kit for YAMAHA YFM 660 RAPTOR 2WD 2002-2005. The rod passes the piston’s motion to the crankshaft. Its big-end bearing spins at very high revs and eventually develops play.
The benefits:
Wössner has also forged its own connecting rods since 2010, with the same in-house forging expertise as its pistons.
Unusual vibration, a deep knock that follows engine speed or play in the con-rod: the bottom end needs a rebuild.
The manufacturer publishes no hour interval for this model: have the con-rod play checked at every piston change. Cross-Mania guideline: rebuild the bottom end every 2 to 3 top-end rebuilds.
Cross-Mania tip: Fitting requires a press and truing the crankshaft with a dial gauge. If you are not equipped, have it done by a workshop.
Check the exact model and year of your bike in the list below before ordering.
Fits:
YAMAHA YFM 660 RAPTOR 2WD 2005
YAMAHA YFM 660 RAPTOR 2WD 2004
YAMAHA YFM 660 RAPTOR 2WD 2003
YAMAHA YFM 660 RAPTOR 2WD 2002
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