PROX 89mm PISTON KIT A KTM EXC 450 03-07, BETA 450RR 05-09, POLARIS MXR450 08-11

Froged Piston KIT A 89.00 mm Bore. STD. Compression 11.0:1
Ready to install, ProX Piston Kits are supplied complete with piston rings, wrist pin, and circlips. - ProX pistons are precision machined on the latest, state of the art CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. - Uses an OEM style tin coating to assist the break-in process when you first start your machine.

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KTM 450 EXC (2003-2007), KTM 450 MXC (2003-2007), KTM 450 XC-W (2003-2007), KTM 450 XC ATV (2008-2009), KTM 450 EXC Racing (2003-2007),
Polaris Outlaw 450 (2008-2010),
Beta 450RR Enduro 4T (2005-2009)

PROX 01.6413.A