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Progressive Suspension is evasive on the spring rate for their fork springs and only touts their perception of the advantage of a progressive rate spring.
I am particularly interested in model DA222048 which is a standard height bagger spring.
Has anyone measured Progressive brand bagger spring rates
As you can see it is common in most FL's with 41mm forks and billed as the "performance replacement"
Drag does not give the Progressive PN
Progressive offers 2 versions of the 41mm spring: Heavy Duty and Standard
I understand the arguement for linear VS progressive rate springs and would like to know the spring rate on the Progressive brand progressive springs for the FL
Progressive Brand doesn't show a spring progressve rate graph, but they do publish Technical Specs. They show the Standard Duty# 11-1131, but oddly not for the Heavy Duty# 11-1536. You might contact Progressive for the 11-1536 specs
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Progressive fork spring rate
