Enhanced piston pin oiling slots, radial boss machining, and annular grooves for improved wrist pin lubrication Lightweight piston with a tight piston wall clearance for a quieter running engine Skirt coated for reduced friction and improved break in performance Ring land treatment for improved ring seal and oil control Double bridged forging design where noted Kit includes piston, rings, wrist pin and pin locks - Gas Gas MC 350F (2023, 2022); Gas Gas EX 350F (2021, 2022, 2023); Husqvarna FX 350 (2019, 2020, 2021, 2022, 2018, 2017); Husqvarna FC 350 (2018, 2020, 2019, 2021, 2014, 2016, 2017, 2022, 2015); KTM 350 XC-F (2017, 2018, 2013, 2014, 2016, 2019, 2021, 2012, 2022, 2015, 2020); KTM 350 SX-F (2021, 2012, 2015, 2016, 2011, 2018, 2020, 2019, 2013, 2014, 2017, 2022); KTM 350 XC-F Kailub Russel (2022)