Renthal – Renthal Chains, including R1 Works chains, R3-3 off-road chains, R4 and R4-2 SRS road chains, RR4 chains, and rivet and spring links, covers final drive from a 65cc mini to a large-displacement road bike. The R1 Works chain is the light, non-sealed option for racers who tear a drivetrain down often, offered in 415, 420, and 520 pitches including a gold 415-112L. Stepping up, R3-3 chains bring SRS sealed-ring protection in 520 for off-road and road use, while R4, R4-2, and RR4 chains handle 520, 525, and 530 pitches in lengths from 100L to 122L for road and ATV applications. The same section carries the small hardware that finishes the job properly: R1 spring links in 415, 420, and 428, R3-3 off-road spring links, and rivet links for R3-3 520, R4 520, R4 520 ATV, and R4-2 530. Chain choice affects more than durability. Pitch and length must match your sprockets and swingarm travel, sealed rings keep grit out of the pin and bushing area so the chain holds adjustment, and a chain that stays consistent delivers smoother power, less driveline snatch, and a cleaner feel every time you get on the throttle.