The RK EXCEL GB520SO-CL is a gold clip-type master link designed for RK 520SO round O-ring motorcycle chains. It provides a practical replacement connection for compatible sealed chains used on low- to mid-range displacement motorcycles, street motorcycles, off-road motorcycles, and ATVs. The master link is intended for applications up to 400cc and is suitable for chain systems originally equipped with sealed O-ring chains.
RK EXCEL manufactures the 520SO chain series with nitrile butadiene rubber O-rings that help retain lubrication between the pin and bushing while limiting contamination and seal drag. When properly matched to the chain and installed according to the manufacturer’s service instructions, the GB520SO-CL helps restore a secure chain connection and smooth power transfer. Its gold finish matches the natural gold appearance of compatible RK EXCEL 520SO chains.
Fitment: Compatible with RK EXCEL 520SO chains and other correctly specified 520 O-ring chain applications using a clip-style master link. Verify chain size, series, pin dimensions, and master-link style before installation. The associated 520SO chain is rated for up to 400cc street, off-road, and ATV applications, with a maximum output rating of 60 horsepower. Manufacturer part number GB520SO-CL and vendor part number 691-1900G identify this RK EXCEL replacement master link.
Features:
- Size: 520 chain size for compatible RK EXCEL 520SO O-ring chain applications
- Model: 520SO
- Brand: RK EXCEL
- Manufacturer Part Number: GB520SO-CL
- Vendor Part Number: 691-1900G
- Master Link Style: Clip-type link
- Finish: Gold finish
- Chain Type: Round O-ring chain compatibility
- Fitment: Low- to mid-range motorcycles, street motorcycles, off-road motorcycles, and ATVs up to 400cc when properly matched
- Performance Rating: Compatible 520SO chain applications rated up to 60 horsepower