ATHENA Clutch Friction Plate Kit + cover gasket for YAMAHA WRF 450 and GAS GAS ECF 450 2005-2015

The ATHENA P40230078 clutch friction plate kit is designed for YAMAHA WRF 450 and GAS GAS ECF 450 from 2005 to 2015. The friction plates transmit engine torque to the gearbox by gripping against the steel plates. As they wear, they get thinner: the clutch slips, overheats and the bike loses traction.

Specifications

• Brand: ATHENA
• Manufacturer part number: P40230078
• EAN code: 8052780272780
• Weight: 350 g
• Engine: 4-stroke

When to replace it?

• Revs rise but the bike doesn't pick up speed (slipping), especially in the higher gears.
• Engagement point that wanders, clutch that judders or smells burnt.
• Plates below the minimum thickness given in the manual.

Measure plate thickness with a vernier caliper at every clutch check and replace the plates once they're below the minimum in the manual, or as soon as they slip.

Fitting tips

1. Soak the new friction plates in gearbox oil before fitting them.
2. Check the steel plates (flatness, blueing) and the clutch springs; replace them if necessary.
3. Make sure the basket fingers aren't notched: if they are, the clutch will snag.
4. Reassemble in the original order, tighten to the manufacturer's torque and close up with a new clutch cover gasket.

Why ATHENA?

Athena, an Italian company founded in 1973 near Vicenza, designs gaskets, pistons and cylinder kits for motorcycles. An OEM supplier to KTM, Ducati, Fantic, Piaggio and Triumph and a partner of the MXGP world championship, it develops its parts on the test bench and on the track with racing teams.

Spare parts and items to plan

• Clutch steel plates : ATHENA · PROX
• Clutch springs : HINSON · BIHR
• Clutch cover gasket : ATHENA · CENTAURO
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 1 L

Frequently asked questions

Should the steel plates be replaced at the same time?
If they're blued, warped or marked, yes: fit new steel plates. If not, check them and keep them.

Is the cover gasket included?
Yes: this kit includes the clutch cover gasket.

Compatibility

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

Fits:
GAS GAS ECF 450 2015
GAS GAS ECF 450 2014
GAS GAS ECF 450 2013
YAMAHA WRF 450 2014
YAMAHA WRF 450 2013
YAMAHA WRF 450 2012
YAMAHA WRF 450 2011
YAMAHA WRF 450 2010
YAMAHA WRF 450 2009
YAMAHA WRF 450 2008
YAMAHA WRF 450 2007
YAMAHA WRF 450 2006
YAMAHA WRF 450 2005