Prox Piston Kit - 99.95 Mm - Beta 498Rr/520Rr 01.7512.A

All pistons are heat treated with a T-5 hardening and tempering cycleAll piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeCast...

Prox Piston Kit - 71.94 Mm - Beta 01.7393.A Beta -- 300 RR 2T -- (2015, 2013, 2017, 2014, 2016); Beta -- X-Trainer 300 -- (2015, 2016, 2017)

Prox Piston Kit - 71.94 Mm - Beta 01.7398.A Beta -- 300 RX -- (2022, 2021, 2023, 2025, 2024); Beta -- 300 RR 2T -- (2020, 2018, 2019, 2021); Beta -- X-Trainer 300 -- (2019, 2018, 2020, 2021)

Prox Piston Kit - 87.96 Mm - Beta 390Rr 01.7365.A Beta -- 390 RR 4T -- (2017, 2020, 2016, 2018, 2019, 2023, 2015, 2024, 2025, 2021); Beta -- 390 RR Race Edition 4T -- (2017, 2015, 2019, 2020, 2021,...

Prox Piston Kit - 94.95 Mm - Beta 450Rr 01.7412.A Beta -- 450 RR 4T -- (2013, 2014, 2010, 2012, 2011)