CNC Ported Race Head w/Big Valves - KLX140

SX Parts CNC Ported Cylinder Head with big valves.

Available in two sizes:

• 31-25mm works best with 63mm piston (170cc kit)
• 34-29mm works best with 66mm piston and up

Please note that the 63mm piston will not work with the 34/29 size

It comes complete with new valve springs, valve seals, collets, top and bottom retainers specifically for this performance head.

Fitment:

• 2008-Present KLX140