520 R33 ChainThe newest update to the R3 chain rangeThis new chain design does away with the ?O-ring? and instead incorporates Renthal&aposs SRS (Self-Regulating Seals) ring system to increase chain longevityChain has been upgraded to the R4 ranges proven quad riveting manufacturing processRivet link has also been changed to a hollow end to facilitate easier installation that does not require a Quad Stake Rivet tool to installHigh-carbon alloy steel pins, solid bushings and rollers, and shot peening of plates and rollers for increased fatigue resistanceClip type and rivet link included BASE COLORGoldCHAIN TYPE520 R33COLORGoldLINKS114MASTER LINK CONNECTORClip| HollowMAX ENGINE CC OFFROAD450 ccMODELR3PRODUCT NAMEDrive ChainSEAL TYPESelf Regulating Seal (SRS)SIZE520TENSILE STRENGTH33 kN (7420 lb)UNITSEach