
Race-Driven Polaris Side-by-Side Brake Master Cylinder Assembly AM-72840
$89.93
In stock · Free Shipping
Rear brake rotor disc made from stainless steel 420 2Cr13 with heat-treated HRC 36±3 hardness. Compatible with Beta RR XTrainer 125, 250, 300, 350, and 498 models from 2013–2024.
Price shown is the online purchase price. Free shipping · 30-day return policy
| Year | Make | Model | Power / Engine | Variant |
|---|---|---|---|---|
| 2013 | Beta | RR XTrainer | 125 | |
| 2013 | Beta | RR XTrainer | 250 | |
| 2013 | Beta | RR XTrainer | 300 | |
| 2013 | Beta | RR XTrainer | 350 | |
| 2013 | Beta | RR XTrainer | 498 | |
| 2014 | Beta | RR XTrainer | 125 | |
| 2014 | Beta | RR XTrainer | 250 | |
| 2014 | Beta | RR XTrainer | 300 | |
| 2014 | Beta | RR XTrainer | 350 | |
| 2014 | Beta | RR XTrainer | 498 | |
| 2015 | Beta | RR XTrainer | 125 | |
| 2015 | Beta | RR XTrainer | 250 | |
| 2015 | Beta | RR XTrainer | 300 | |
| 2015 | Beta | RR XTrainer | 350 | |
| 2015 | Beta | RR XTrainer | 498 | |
| 2016 | Beta | RR XTrainer | 125 | |
| 2016 | Beta | RR XTrainer | 250 | |
| 2016 | Beta | RR XTrainer | 300 | |
| 2016 | Beta | RR XTrainer | 350 | |
| 2016 | Beta | RR XTrainer | 498 | |
| 2017 | Beta | RR XTrainer | 125 | |
| 2017 | Beta | RR XTrainer | 250 | |
| 2017 | Beta | RR XTrainer | 300 | |
| 2017 | Beta | RR XTrainer | 350 | |
| 2017 | Beta | RR XTrainer | 498 | |
| 2018 | Beta | RR XTrainer | 125 | |
| 2018 | Beta | RR XTrainer | 250 | |
| 2018 | Beta | RR XTrainer | 300 | |
| 2018 | Beta | RR XTrainer | 350 | |
| 2018 | Beta | RR XTrainer | 498 | |
| 2019 | Beta | RR XTrainer | 125 | |
| 2019 | Beta | RR XTrainer | 250 | |
| 2019 | Beta | RR XTrainer | 300 | |
| 2019 | Beta | RR XTrainer | 350 | |
| 2019 | Beta | RR XTrainer | 498 | |
| 2020 | Beta | RR XTrainer | 125 | |
| 2020 | Beta | RR XTrainer | 250 | |
| 2020 | Beta | RR XTrainer | 300 | |
| 2020 | Beta | RR XTrainer | 350 | |
| 2020 | Beta | RR XTrainer | 498 | |
| 2021 | Beta | RR XTrainer | 125 | |
| 2021 | Beta | RR XTrainer | 250 | |
| 2021 | Beta | RR XTrainer | 300 | |
| 2021 | Beta | RR XTrainer | 350 | |
| 2021 | Beta | RR XTrainer | 498 | |
| 2022 | Beta | RR XTrainer | 125 | |
| 2022 | Beta | RR XTrainer | 250 | |
| 2022 | Beta | RR XTrainer | 300 | |
| 2022 | Beta | RR XTrainer | 350 | |
| 2022 | Beta | RR XTrainer | 498 | |
| 2023 | Beta | RR XTrainer | 125 | |
| 2023 | Beta | RR XTrainer | 250 | |
| 2023 | Beta | RR XTrainer | 300 | |
| 2023 | Beta | RR XTrainer | 350 | |
| 2023 | Beta | RR XTrainer | 498 | |
| 2024 | Beta | RR XTrainer | 125 | |
| 2024 | Beta | RR XTrainer | 250 | |
| 2024 | Beta | RR XTrainer | 300 | |
| 2024 | Beta | RR XTrainer | 350 | |
| 2024 | Beta | RR XTrainer | 498 |
Always compare the part number, dimensions, specifications, and compatibility details with your original part before ordering.