VERTEX offers you a high-motor piston kit designed for 85cc 2-stroke engines requiring responsiveness, power and endurance, with high-quality aluminum alloy construction offering excellent mechanical and thermal resistance to high revs and heavy motocross use. Thanks to its precision machining and anti-friction coating on the piston skirt, this kit reduces internal friction, improves lubrication and promotes more efficient combustion to maintain smooth revving, lively engine response and consistent performance. Its optimized design maintains stable compression, minimizes wear on internal components and ensures excellent durability even under extreme operating conditions. The complete ready-to-fit kit typically includes piston, rings, pin, circlips, top-engine seals and a needle cage to ensure a reliable, long-lasting top-engine rebuild.

Fits on :

YAMAHA YZ 85 LW 2026

YAMAHA YZ 85 LW 2025

YAMAHA YZ 85 LW 2024

YAMAHA YZ 85 LW 2023

YAMAHA YZ 85 LW 2022

YAMAHA YZ 85 LW 2021

YAMAHA YZ 85 LW 2020

YAMAHA YZ 85 LW 2019

YAMAHA YZ 85 LW 2016

YAMAHA YZ 85 LW 2015

YAMAHA YZ 85 LW 2014

YAMAHA YZ 85 LW 2013

YAMAHA YZ 85 LW 2012

YAMAHA YZ 85 LW 2011

YAMAHA YZ 85 LW 2010

YAMAHA YZ 85 LW 2009

YAMAHA YZ 85 LW 2008

YAMAHA YZ 85 LW 2007

YAMAHA YZ 85 LW 2006

YAMAHA YZ 85 LW 2005

YAMAHA YZ 85 LW 2004

YAMAHA YZ 85 LW 2003

YAMAHA YZ 85 LW 2002

YAMAHA YZ 85 SW 2026

YAMAHA YZ 85 SW 2025

YAMAHA YZ 85 SW 2024

YAMAHA YZ 85 SW 2023

YAMAHA YZ 85 SW 2022

YAMAHA YZ 85 SW 2021

YAMAHA YZ 85 SW 2020

YAMAHA YZ 85 SW 2019

YAMAHA YZ 85 SW 2016

YAMAHA YZ 85 SW 2015

YAMAHA YZ 85 SW 2014

YAMAHA YZ 85 SW 2013

YAMAHA YZ 85 SW 2012

YAMAHA YZ 85 SW 2011

YAMAHA YZ 85 SW 2010

YAMAHA YZ 85 SW 2009

YAMAHA YZ 85 SW 2008

YAMAHA YZ 85 SW 2007

YAMAHA YZ 85 SW 2006

YAMAHA YZ 85 SW 2005

YAMAHA YZ 85 SW 2004

YAMAHA YZ 85 SW 2003

YAMAHA YZ 85 SW 2002