Traxxas White Long Progressive Springs are a pair of custom-wound white progressive-rate springs for long Ultra Shocks that improve small-bump compliance while ramping up stiffness for bigger hits. These springs help the suspension track rough surfaces without bottoming out on hard landings.
These Traxxas White Long Progressive Springs are sold as a (2) spring set and install directly in long Ultra Shocks, giving an easy handling upgrade for trail riding and backyard bashing. They keep the shock active over small obstacles and provide progressive damping when you need extra support on jumps and rock sections.
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