JT Sprockets JTC420HDR090SL Steel 90-Link Heavy Duty Drive Chain (420 HDR) The JT HDR Heavy duty motorcycle chain is engineered for off road racing use offering top performance at minimum weight Manufactured using leading edge technology and with only the highest grade of special steel alloys The specifications of the JT advanced power transfer chains meet or exceed the requirements of all modern motorcycles, street, MX, enduro, off road, and ATV Use with JT Sprockets to achieve maximum performance Specs: Roller Diameter: 7.77 mm; Pin Length: 15.05 mm; Plate Thickness Inner: 1.6 mm; Plate Thickness Outer: 1.6 mm; Weight per 100 links: 1.63 lbs; Avg. Tensile Strength: 4189 lb-f; No. of Pin Rivet Presses: 2; Master Link Type: Clip The JT HDR Heavy duty motorcycle chain is engineered for off road racing use offering top performance at minimum weight Manufactured using leading edge technology and with only the highest grade of special steel alloys The specifications of the JT advanced power transfer chains meet or exceed the requirements of all modern motorcycles, street, MX, enduro, off road, and ATV Use with JT Sprockets to achieve maximum performance Specs: Roller Diameter: 7.77 mm; Pin Length: 15.05 mm; Plate Thickness Inner: 1.6 mm; Plate Thickness Outer: 1.6 mm; Weight per 100 links: 1.63 lbs.; Average Tensile Strength: 4189 lb.-f; No. of Pin Rivet Presses: 2; Master Link Type: Clip