• RK racing chains have been the overwhelming choice of World Championship Teams for the past two decades!
• They have benefited from their long-term OEM relationships with the major Japanese motorcycle manufacturers; RK has supplied original chains and chains for racing
• All high-quality RK chains are made in Japan except the standard RKM series, which are from Malaysia
• All RK chains feature quad-staked pin riveting, solid rollers and solid bushings, except the RKM and standard series, which have two-point riveting and curled bushings
• They are all pre-stressed and pre-stretched for better performance with fewer adjustments

PERFORMANCE RX-RING SEALED CHAINS (XSO)

• Lubricated with specially-formulated, vacuum-injected U-grease locked in at 4 sealing points by tough rubber X-rings
• 30 percent longer wear life than regular O-ring chains
• Polished and shot-peened link plates
• High tensile strength ensures reliable performance
• Max. Engine Size: 750cc
• Tensile Strength: 8,500lbs
• Wear Life Index: 750
  (Wear life Index should be used as a comparison for probable wear life under identical circumstances. Think of it as a percent, with standard chains being 100)
  
  If your motorcycle came factory-equipped with an O-Ring, it must be replaced with an O-Ring chain

Includes a Rivet Type Master Link

Replacement connecting link:
Clip-Type: part no. 11-9997
Rivet-Type: part no. 11-9998

(1) 120 Link 520XSO RX-Ring chain, natural color
(1) Rivet type connecting link, natural color
Instructions