Super tough plain chain from DID.  Features include DID's SDH pin treatment, which forms a super-hard chromium carbide layer on the outside for wear resistance while leaving the core malleable enough to absorb high shock loadings without breaking.  The NZ series also includes solid bushings and quad-riveted pins for great strength.  This has always been our chain of choice for the Farkham Hall YPM race bike.

Tensile strength of the 420 chain is 21.9KN and wear resistance is quoted at 410 (compared to standard chain = 100)

 Just select the number of links you need from the options panel and the style of joining link. If you are not sure of the number of links or have a non-standard sprocket combination, there is a calculator on the Workin' on the Chain Gang category page.