At DMG Motorsports, we present the RK EXCEL 415 HRU Gold Drive Chain — a purpose-built sprint racing chain engineered for competitors who demand every advantage on the track. Part of RK's 415 Sprint Racing Chain Series, the HRU Gold harnesses RK's proprietary Ultra Thin U-Seal Ring technology, featuring seal rings with a thickness less than 50% of a conventional O-ring. This breakthrough design delivers all the protection of a sealed chain at the weight of a non-sealed chain — a critical edge in competitive racing. By minimizing chain elongation under high-horsepower conditions, the HRU Gold keeps power transmission efficiency high from the first lap to the last. Available in a 120-link configuration or as a rivet-style master link, this chain is strictly a racing-only component rated for up to 250cc race applications.

Features:

• Part of RK EXCEL's 415 Sprint Racing Chain Series
• Proprietary Ultra Thin U-Seal Ring technology — seal thickness less than 50% of a standard O-ring
• Sealed chain protection at non-sealed chain weight for a true racing advantage
• Minimizes chain elongation to maintain high horsepower transmission efficiency throughout the race
• Tensile strength: 4,800 lbs
• Max CC rating: 250cc Race
• Max horsepower: 60 HP
• Weight: 1.52 lbs
• Max chain width: 15.4mm
• Available variants: 120-link chain or rivet-style master link
• Racing use only