The Dirt Tricks BT-49-Z-C Rear Sprocket is a 49-tooth, 520-chain sprocket designed for demanding off-road use. Manufactured by Dirt Tricks, this Chromatic sprocket combines chromoly steel and zirconium construction to deliver high strength, reduced weight, and long service life. Its unique minimalist design provides a performance-focused alternative to conventional aluminum and stainless-steel sprockets.
Developed by Dirt Tricks president and engineer Greg Burns, the sprocket reflects expertise in aerospace-grade steels, heat treatment, and FEA stress analysis. The zirconium coating helps reduce friction by up to 50 percent while improving durability and providing a distinctive Chromatic finish. Dirt Tricks rear sprockets are engineered to be 2.5 times stronger than stainless steel and are backed by a one-year replacement guarantee if the sprocket wears out.
Fitment includes 2015–2017 Beta 300 Xtrainer models and 2013–2017 Beta 250 RR 2T models, as well as 2013–2014 Beta 300 RR 2T models. Verify the motorcycle model, year, chain size, tooth count, and mounting pattern before installation. This product is identified by Dirt Tricks manufacturer part number BT-49-Z-C and vendor part number BT-49-Z-C.
Features:
- 49-tooth rear sprocket designed for 520 chain applications
- Chromoly steel and zirconium construction for strength, durability, and reduced weight
- Chromatic finish with zirconium coating that reduces friction by up to 50 percent
- Minimalist Dirt Tricks design engineered for demanding off-road riding
- 2.5 times stronger than stainless steel according to manufacturer specifications
- Fits 2015–2017 Beta 300 Xtrainer models
- Fits 2013–2017 Beta 250 RR 2T models
- Fits 2013–2014 Beta 300 RR 2T models
- Manufacturer and vendor part number: BT-49-Z-C
- Backed by Dirt Tricks' one-year replacement guarantee if worn out
Fitment:
2013 Beta 250 RR (2T)
2013 Beta 300 RR (2t)
2013 Beta 350 RR
2013 Beta 350 RS
2013 Beta 400 RR
2013 Beta 450 RR
2013 Beta 450 RS
2013 Beta 498 RR
2014 Beta 250 RR (2T)
2014 Beta 300 RR (2t)
2014 Beta 350 RR
2014 Beta 400 RR
2014 Beta 400 RS
2014 Beta 450 RR
2014 Beta 450 RS
2014 Beta 498 RR
2015 Beta 250 RR (2T)
2015 Beta 250 RR (RE)
2015 Beta 300 RR (2t)
2015 Beta 300 Xtrainer
2015 Beta 350 RR
2015 Beta 390 RR
2015 Beta 390 RS
2015 Beta 430 RR
2015 Beta 430 RS
2015 Beta 450 RR
2015 Beta 480 RR
2015 Beta 500 RS
2016 Beta 250 RR (2T)
2016 Beta 250 RR (RE)
2016 Beta 300 RR (2t)
2016 Beta 300 Xtrainer
2016 Beta 350 RR
2016 Beta 390 RR
2016 Beta 390 RS
2016 Beta 430 RR
2016 Beta 430 RS
2016 Beta 450 RR
2016 Beta 480 RR
2016 Beta 500 RS
2017 Beta 250 RR (2T)
2017 Beta 250 RR (RE)
2017 Beta 300 RR (2t)
2017 Beta 300 RR (RE)
2017 Beta 300 Xtrainer
2017 Beta 350 RR
2017 Beta 350 RR (RE)
2017 Beta 390 RR
2017 Beta 390 RR (RE)
2017 Beta 430 RR
2017 Beta 430 RR (RE)
2017 Beta 450 RR
2017 Beta 480 RR
2017 Beta 480 RR (RE)
2017 Beta 498 RR
2018 Beta 250 RR (2T)
2018 Beta 250 RR (RE)
2018 Beta 300 RR (2t)
2018 Beta 300 RR (RE)
2018 Beta 300 Xtrainer
2018 Beta 350 RR
2018 Beta 350 RR (RE)
2018 Beta 390 RR
2018 Beta 390 RR (RE)
2018 Beta 430 RR
2018 Beta 430 RR (RE)
2018 Beta 450 RR
2018 Beta 480 RR
2018 Beta 480 RR (RE)
2018 Beta 498 RR
2019 Beta 250 RR (2T)
2019 Beta 250 RR (RE)
2019 Beta 300 RR (2t)
2019 Beta 300 RR (RE)
2019 Beta 300 Xtrainer
2019 Beta 350 RR
2019 Beta 350 RR (RE)
2019 Beta 390 RR
2019 Beta 390 RR (RE)
2019 Beta 430 RR
2019 Beta 430 RR (RE)
2019 Beta 450 RR
2019 Beta 480 RR
2019 Beta 480 RR (RE)
2019 Beta 498 RR
2020 Beta 250 RR (2T)
2020 Beta 250 RR (RE)
2020 Beta 300 RR (2t)
2020 Beta 300 RR (RE)
2020 Beta 300 Xtrainer
2020 Beta 350 RR
2020 Beta 350 RR (RE)
2020 Beta 390 RR
2020 Beta 390 RR (RE)
2020 Beta 430 RR
2020 Beta 430 RR (RE)
2020 Beta 450 RR
2020 Beta 480 RR (RE)
2021 Beta 250 RR (2T)
2021 Beta 250 RR (RE)
2021 Beta 300 RR (2t)
2021 Beta 300 RR (RE)
2021 Beta 300 Xtrainer
2021 Beta 350 RR
2021 Beta 350 RR (RE)
2021 Beta 390 RR
2021 Beta 390 RR (RE)
2021 Beta 430 RR
2021 Beta 430 RR (RE)
2021 Beta 450 RR
2021 Beta 480 RR (RE)
2022 Beta 250 RR (2T)
2022 Beta 250 RR (RE)
2022 Beta 300 RR (2t)
2022 Beta 300 RR (RE)
2022 Beta 300 Xtrainer
2022 Beta 350 RR
2022 Beta 350 RR (RE)
2022 Beta 390 RR
2022 Beta 390 RR (RE)
2022 Beta 430 RR
2022 Beta 430 RR (RE)
2022 Beta 480 RR
2022 Beta 480 RR (RE)
2023 Beta 250 RR (2T)
2023 Beta 250 RR (RE)
2023 Beta 300 RR (2t)
2023 Beta 300 RR (RE)
2023 Beta 300 Xtrainer
2023 Beta 350 RR
2023 Beta 350 RR (RE)
2023 Beta 390 RR
2023 Beta 390 RR (RE)
2023 Beta 430 RR
2023 Beta 430 RR (RE)
2023 Beta 480 RR
2023 Beta 480 RR (RE)
2024 Beta 250 RR (2T)
2024 Beta 250 RR (RE)
2024 Beta 300 RR (2t)
2024 Beta 300 RR (RE)
2024 Beta 300 Xtrainer
2024 Beta 350 RR
2024 Beta 350 RR (RE)
2024 Beta 390 RR
2024 Beta 390 RR (RE)
2024 Beta 430 RR
2024 Beta 430 RR (RE)
2024 Beta 480 RR
2024 Beta 480 RR (RE)
2025 Beta 250 RR (2T)
2025 Beta 250 RR (RE)
2025 Beta 300 RR (2t)
2025 Beta 300 RR (RE)
2025 Beta 300 Xtrainer
2025 Beta 350 RR
2025 Beta 350 RR (RE)
2025 Beta 390 RR
2025 Beta 390 RR (RE)
2025 Beta 430 RR
2025 Beta 430 RR (RE)
2025 Beta 480 RR
2025 Beta 480 RR (RE)
2026 Beta 250 RR (2T)
2026 Beta 250 RR (RE)
2026 Beta 300 RR (2t)
2026 Beta 300 RR (RE)
2026 Beta 300 Xtrainer
2026 Beta 350 RR
2026 Beta 350 RR (RE)
2026 Beta 390 RR
2026 Beta 390 RR (RE)
2026 Beta 430 RR
2026 Beta 430 RR (RE)
2026 Beta 480 RR
2026 Beta 480 RR (RE)