PROX Piston Kit for KTM EXC 450, XC 450, BETA RR 450 and POLARIS OUTLAW 450 2003-2010

PROX offers this piston kit for KTM EXC 450, XC 450, BETA RR 450 and POLARIS OUTLAW 450 2003-2010. The piston slides in the cylinder and takes the force of the air-fuel combustion, passing it to the connecting rod and crankshaft.

Why replace the piston?

The benefits:

• Restore compression, power and easy starting.
• A piston of the right size keeps the intended clearance in the cylinder: less noise and less oil consumption.
• A new piston with rings, pin and clips: nothing to reuse from the old one.

Why choose PROX?

ProX has its pistons made in Japan and the USA, with Japanese rings (Riken, TP or NPR) and tolerances at least equal to OEM; most of its four-stroke pistons are forged.

When should you replace the piston on your BETA RR 450?

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

• Compression ratio: 11.0:1
• Size : C
• Manufacturer part number: 01.6413.C

Spare parts and items to plan

• Piston rings : WOSSNER · VERTEX
• Piston pin : WOSSNER CW20 · WOSSNER CW19
• Top-end gasket kit : ATHENA · CENTAURO
• Spark plug : see the selection
• Coolant : LIQUI MOLY 1 L · TWIN AIR
• 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:
BETA RR 450 2009
BETA RR 450 2008
BETA RR 450 2007
BETA RR 450 2006
BETA RR 450 2005
KTM EXC 450 2007
KTM EXC 450 2006
KTM EXC 450 2005
KTM EXC 450 2004
KTM EXC 450 2003
KTM XC 450 2009
KTM XC 450 2008
POLARIS OUTLAW 450 2010
POLARIS OUTLAW 450 2009
POLARIS OUTLAW 450 2008