The Vertex piston for the TM85 is very good race piston at a very competitive price.
HGS Exhaust Yamaha YZ250 1996-2022
HAAN FRONT WHEEL KTM SX & SX-F 2003-2014 17-3.5
This piston is for race use only, 39.46mm The crown on this piston is 1.5mm lower than the standard piston height and as such requires the VHM head with special insert. Comes complete with ring, pin & clips.
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