ATHENA Complete Crankshaft for KAWASAKI KLX 110 2002-2009

On KAWASAKI KLX 110 from 2002 to 2009, the ATHENA P400250201001 complete crankshaft fits in place of the original part. The centrepiece of the bottom end, the crankshaft carries the connecting rod and takes every combustion. A tired crank assembly shows up as vibration, noise and, in the end, engine failure.

Specifications

• Brand: ATHENA
• Manufacturer part number: P400250201001
• EAN code: 8052204296668
• Weight: 1.5 kg
• Engine: 4-stroke

When to replace it?

• Play at the big end (vertical movement of the connecting rod at top dead centre).
• Unusual vibration, dull noise from the bottom end.
• Signs of overheating or seizure on the small-end bearing or the crank pin.

During a bottom end rebuild, or as soon as play appears at the big end. A complete crankshaft saves you having the original crank assembly pressed apart and realigned.

Fitting tips

1. Replace the crankshaft bearings and oil seals at the same time.
2. Before closing the crankcases, check the side play and the run-out. Run-out is the deviation you measure with a dial indicator at the end of the shaft while turning the crankshaft: it shows whether the two flywheels are perfectly aligned. The lower it is, the less the engine vibrates.
3. Close up the engine with a new complete engine gasket kit.
4. Check the gearbox bearings while the cases are split.
5. Tighten the flywheel nut and primary gear nut to the torque given by the manufacturer, then fill up with fresh oil.

Why ATHENA?

Founded in 1973 near Vicenza, Athena is an Italian engine gasket specialist that has made its gaskets on its own production lines since day one, as well as a renowned manufacturer of pistons and cylinder kits. The brand supplies original equipment to manufacturers such as KTM, Ducati, Fantic, Piaggio and Triumph, and is a partner of the MXGP motocross world championship.

Spare parts and items to plan

• Crankshaft bearings and seals : see the selection
• Complete engine gasket kit : see the selection
• Gearbox bearings : see the selection
• 4-stroke engine oil : MOTUL 10W50 · LIQUI MOLY 10W40 1 L
• Spark plug : see the selection

Frequently asked questions

Are the bearings supplied?
No: you'll need the crankshaft bearing and seal kit, the complete engine gasket kit, the gearbox bearings if required, engine oil and a new spark plug.

What does “run-out” mean?
It's the deviation in the crankshaft's rotation, measured with a dial indicator at the end of the shaft. Very low run-out means the flywheels are perfectly aligned: the engine vibrates less and its bearings last longer. It has nothing to do with full-circle flywheels or balancing, which concern the shape and weight distribution of the flywheels.

Compatibility

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

Fits:
KAWASAKI KLX 110 2009
KAWASAKI KLX 110 2008
KAWASAKI KLX 110 2007
KAWASAKI KLX 110 2006
KAWASAKI KLX 110 2005
KAWASAKI KLX 110 2004
KAWASAKI KLX 110 2003
KAWASAKI KLX 110 2002