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November 24, 2020 at 21:49 #46548
Indeed the Sumo Spring website is terrible. It sounds like you are looking at the SUPER Springs, and not at the SUMO Springs. The Sumo springs essentially replace the axle bump stops, while the SUPER springs are a single leaf spring type of affair with what looks like shackles on the ends that capture the main leaf spring.
I do know the Timbrens replace the axle bump stops and a lot of people swear by them.