Set of piston rings Ø85,50MM for 4939D 100 WISECO for YAMAHA YFM 450 GRIZZLY 4WD, YFM 450 WOLVERINE 4WD 2006-2009

WISECO offers this piston ring set for YAMAHA YFM 450 GRIZZLY 4WD, YFM 450 GRIZZLY CAMO 4WD, YFM 450 KODIAK 4WD, YFM 450 KODIAK CAMO 4WD, YFM 450 WOLVERINE 4WD 2006-2009. Rings are thin steel bands sitting in the piston grooves. They press against the cylinder wall to hold compression and scrape oil.

Why replace the rings?

The benefits:

• Regain compression and power.
• Reduce oil consumption and smoke.
• A cheap fix when piston and cylinder are still within spec.

Why choose WISECO?

Wiseco has forged its pistons in Mentor (Ohio, USA) since 1941 and controls the whole process, from aluminium bar to the friction-reducing ArmorGlide skirt coating. Its pistons are developed with Team Honda HRC in Supercross (450 class since 2018).

When should you replace the piston rings on your YAMAHA YFM 450 WOLVERINE 4WD?

Harder starting, loss of power, blue smoke, oil consumption or a knock when cold: these are the signs of a tired top end.

No manufacturer hour figure for this model. Cross-Mania guideline: compression check every 50 h in hard use and every 100 h for leisure.

Specifications and fitting tips

• Manufacturer part number: W8550XX

Cross-Mania tip: Check the ring end gap in the cylinder before fitting and respect the fitting direction (mark facing up).

Also needed with this part

• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA YFM 450 GRIZZLY 4WD 2009
YAMAHA YFM 450 GRIZZLY 4WD 2008
YAMAHA YFM 450 GRIZZLY 4WD 2007
YAMAHA YFM 450 GRIZZLY CAMO 4WD 2009
YAMAHA YFM 450 GRIZZLY CAMO 4WD 2008
YAMAHA YFM 450 GRIZZLY CAMO 4WD 2007
YAMAHA YFM 450 KODIAK 4WD 2006
YAMAHA YFM 450 KODIAK CAMO 4WD 2006
YAMAHA YFM 450 WOLVERINE 4WD 2009
YAMAHA YFM 450 WOLVERINE 4WD 2008
YAMAHA YFM 450 WOLVERINE 4WD 2007
YAMAHA YFM 450 WOLVERINE 4WD 2006