Dirt Tricks HV-51-Z-C Chromoly Steel and Zirconium Rear Sprocket 51T for 520 Chains

The Dirt Tricks HV-51-Z-C Chromoly Steel and Zirconium Rear Sprocket is engineered for durability and performance in off-road riding environments. Designed and patented in 2002 by Dirt Tricks president Greg Burns, this sprocket leverages aerospace-grade steels, advanced heat treatments, and finite element analysis to deliver exceptional strength and longevity. Its unique minimalist design ensures it is 2.5 times stronger than stainless steel counterparts while maintaining a lightweight profile comparable to aluminum options. This combination makes it an ideal choice for riders seeking a sprocket that withstands a full season of intense riding conditions without sacrificing performance or weight.

Our latest Diamond Black and Chromatic finishes incorporate innovative design changes that reduce weight and introduce a striking visual appeal. Additionally, the Zirconium coating on the sprocket significantly cuts friction by up to 50%, enhancing efficiency and wear resistance while providing a sleek, sharp aesthetic. The sprocket's construction emphasizes durability and heat resistance, ensuring it maintains performance even under demanding riding scenarios. Backed by a one-year guarantee, the Dirt Tricks HV-51-Z-C is a reliable upgrade for riders who demand the best in strength, weight savings, and style for their 520 chain systems.

Features:

• Designed and patented by Greg Burns in 2002, utilizing aerospace steels, heat treatments, and FEA stress analysis

• Built to last an entire season of hard riding while maintaining a lightweight profile comparable to aluminum

• Diamond Black and Chromatic finishes feature innovative design improvements reducing weight and enhancing visual appeal

• Zirconium coating reduces friction by up to 50%, increases durability, and provides a sharp, modern look

• Constructed to be 2.5 times stronger than stainless steel with a minimalist design for optimal strength and appearance

• Backed by a one-year warranty, ensuring replacement if worn out