These option part springs are available to further upgrade items 54504/54505 Buggy Big Bore Aeration Dampers. 3 varieties of hardness are included to allow racers to tailor their car’s suspension to the unique challenges of each course.

• Hard springs x2 (.76 spring rate)
• Medium springs x2 (.7 spring rate)
• Soft springs x2 (.64 spring rate)
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