RENTHAL 520 R3-3 SRS CHAIN CHAIN R3-3 SRS 520-120L

Renthal's SRS（Self-Regulating Seals）System increases service life of chain comes pre-stretched for less adjustment during break in rivet link has been changed to a hollow end to facilitate easier installation that does not require a quad stake rivet tool to install high-carbon alloy steel pins，solid bushing and rollers， and shot peening of plates and rolls for increased fatigue resistance 520 pitch；average tensile strength 7820 lbs.520 R3-3 SRS chain 520 R33 chain R3-3 SRS 520-120L