WISECO piston ring set Ø 54.00 mm for GAS GAS EC 125, MC 125, SM 125 and YAMAHA YZ 125 1998-2015

Check before ordering

• Diameter: Ø 54.00 mm

WISECO offers this piston ring set for GAS GAS EC 125, MC 125, SM 125 and YAMAHA YZ 125 1998-2015. 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?

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 20 h in hard use and every 40 h for leisure.

Specifications and fitting tips

• Manufacturer part number: W2126CST

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

• Piston : ATHENA S4C04450001 · ATHENA S4C05800001
• Top-end gasket kit : ATHENA 150 · ATHENA
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063

Compatibility

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

Fits:
GAS GAS EC 125 2015
GAS GAS EC 125 2014
GAS GAS EC 125 2013
GAS GAS EC 125 2012
GAS GAS EC 125 2011
GAS GAS EC 125 2010
GAS GAS EC 125 2009
GAS GAS EC 125 2008
GAS GAS EC 125 2007
GAS GAS EC 125 2006
GAS GAS EC 125 2005
GAS GAS EC 125 2004
GAS GAS EC 125 2003
GAS GAS EC 125 2002
GAS GAS EC 125 2001
GAS GAS MC 125 2009
GAS GAS MC 125 2008
GAS GAS MC 125 2007
GAS GAS MC 125 2006
GAS GAS MC 125 2005
GAS GAS MC 125 2004
GAS GAS MC 125 2003
GAS GAS MC 125 2002
GAS GAS SM 125 2008
GAS GAS SM 125 2007
GAS GAS SM 125 2006
GAS GAS SM 125 2005
GAS GAS SM 125 2004
GAS GAS SM 125 2003
GAS GAS SM 125 2002
YAMAHA YZ 125 2004
YAMAHA YZ 125 2003
YAMAHA YZ 125 2002
YAMAHA YZ 125 2001
YAMAHA YZ 125 2000
YAMAHA YZ 125 1999
YAMAHA YZ 125 1998