The Dirt Tricks HV-50-Z-C rear sprocket is a 50-tooth, 520-chain replacement designed for demanding off-road riding. Manufactured by Dirt Tricks, this Chromatic Zirconium sprocket combines a lightweight construction with the strength and durability needed for hard enduro, cross-country, and trail use. Its minimalist design delivers performance comparable to aluminum while providing significantly greater wear resistance.
Developed using aerospace-grade steel knowledge, advanced heat-treatment methods, and finite element analysis, the Dirt Tricks rear sprocket is engineered to withstand repeated loads and severe riding conditions. The zirconium coating helps reduce friction by up to 50 percent, improves durability, and provides a distinctive Chromatic finish. Dirt Tricks states that its rear sprockets are 2.5 times stronger than stainless steel and supports them with a one-year guarantee against wear.
Fitment includes 2017–2020 Sherco 250 SC Cross Country, 2017–2020 Sherco 300 SC Cross Country, 2019 Sherco 450 SC-F Cross Country, and 2018 Sherco 250 SC and 300 SC Cross Country models. Verify the model year, chain size, tooth count, and mounting configuration before installation. The manufacturer part number is HV-50-Z-C, and the vendor part number is 254-170150.
Features:
- 50-tooth rear sprocket designed for 520 chain applications
- Dirt Tricks Chromatic Zirconium coating helps reduce friction by up to 50 percent
- Aerospace-inspired steel construction with advanced heat treatment and FEA-based engineering
- Up to 2.5 times stronger than stainless steel for demanding off-road use
- Lightweight minimalist design offers performance comparable to aluminum with improved durability
- Backed by Dirt Tricks' one-year wear guarantee
- Fits select 2017–2020 Sherco 250 SC Cross Country, 300 SC Cross Country, and 450 SC-F Cross Country models
- Manufacturer part number: HV-50-Z-C
- Vendor part number: 254-170150
Fitment:
2017 Sherco 250 SC Cross Country
2017 Sherco 300 SC Cross Country
2018 Sherco 250 SC Cross Country
2018 Sherco 300 SC Cross Country
2019 Sherco 250 SC Cross Country
2019 Sherco 300 SC Cross Country
2019 Sherco 450 SC-F Cross Country
2020 Sherco 250 SC Cross Country
2020 Sherco 300 SC Cross Country
2020 Sherco 450 SC-F Cross Country