Manufactured at leading OEM factories Made to exact OEM specifications, to ensure maximum quality and performance Includes all necessary bearings/seals for a components replacement ProX bearings offer high durability and the seals make sure to keep the oil in and dirt out of the engine Can be used in combination with all other ProX or OEM crankshaft related products - Beta 250 RR 2T (2018, 2021, 2013, 2016, 2014, 2015, 2017, 2020, 2019); Beta 300 RR 2T (2015, 2018, 2023, 2017, 2022, 2014, 2016, 2019, 2021, 2013, 2020); Beta X-Trainer 250 (2018, 2019); Beta X-Trainer 300 (2017, 2019, 2021, 2020, 2015, 2018, 2022, 2023, 2016); Beta 300 RX (2024, 2021, 2023, 2022, 2025)