Description
The Dirt Tricks Zirconium Rear Sprocket is a lightweight, high-durability 520 rear sprocket designed for the Stark Varg. Built for riders who want longer sprocket life without the weight of a conventional steel design, it combines high-strength chromoly steel with Dirt Tricks' low-friction Zirconium coating.
The Zirconium coating is designed to reduce drivetrain friction while increasing wear resistance, making this sprocket well suited for high-power riding, racing, and demanding off-road conditions.
Lightweight, Long-Lasting Construction
Dirt Tricks machines its Zirconium sprockets from chromoly steel using a minimalist design that removes unnecessary material while maintaining strength. According to Dirt Tricks, the Zirconium version is approximately 2 ounces lighter than its original Ironman Chrome sprocket and can last significantly longer than conventional aluminum sprockets.
Key Features
- Designed for the Stark Varg
- Compatible with Bonnell 805 and 902
- 520 chain compatibility
- High-strength chromoly steel construction
- Zirconium coating helps reduce friction by up to 50%
- Approximately 2 oz lighter than Dirt Tricks Ironman Chrome sprockets
- Designed for substantially longer wear than typical aluminum sprockets
- Precision-machined tooth profile and tight manufacturing tolerances
- Minimalist design reduces unnecessary rotating weight
- Dirt Tricks 2-year wear warranty
Available Sizes
- 48T
- 49T
- 50T
- 51T
- 52T
48T is the stock rear sprocket size on the Stark Varg MX. Increasing tooth count provides shorter gearing with more low-speed torque and acceleration, while decreasing tooth count provides taller gearing.
Compatibility
- Stark Varg MX
- Stark Varg EX
- Stark Varg SM
- Bonnell 805
- Bonnell 902
Current fitment references list the Dirt Tricks sprocket for 2024–2026 Stark Varg applications, including MX, EX, and SM configurations. Always verify model-year compatibility before installation.