RK Chain Link 520 ZXW Black Scale Rivet Connecting LinkNew Generation Hyper Performance RK XW Sealed Chain RKs flagship model. The ZXW Series were developed to meet the spec of the latest models of extreme superbikes and hyperbikes. XW Ring seals which have 2 lubrication pools and 3 contact lips, a triple barrier structure to further seal the lubrication and prevent debris to enter the chain. No other chain currently on the market has these features. Designed to be the strongest, long lasting premium

Manufacturer Model Year Yamaha YFM250 R-X

Manufacturer Model Year Yamaha DT250 MX-D

R Dominator (RD02) 1991-1994 Yamaha FZ400 (4YR) - Japan 1997 Yamaha YZF600R Thunder Cat <<< 520 Chain Conversion 1996-2003 Yamaha YZF600R-T

655M13 Nickel-Chrome-Molybdenum alloy steel case hardened core

K Maxim - USA 1981-1983 Yamaha XJ550 R J

B - USA 1973-1977 Suzuki TC185 M

R-1 2000-2001 Honda CR250 - France 1997 Honda CR250 R-2 2002 Honda CR250 R-3 2003 Honda CR250 R-4 2004 Honda CR250 R-6

EXW chains feature XW-Ring seals to better survive the abrasive conditions that exist in hostile off-road conditions

7 <<< 520 Chain Conversion 2002-2007 Honda CBR600 F-B

J 2005-2018 Honda TRX450 R/ER (Elec Start & Kick Start) 2006-2014

K Dax 1988-1989 Honda ST50 J

9mm breaking tip