Piston KIT 77.00 mm Bore [2.00mm O/S]
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.
Replacements parts.

PROX RING SET 02.6301.200

KTM EXC 250 2001 - 2005,
Beta 250RR Enduro 4T 2005-2007,

PROX 01.6301.200