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These tuning rounds go on the side of a anti-foam insert to fill the tire more. Great for wide rims, wide tires, or for even better sidehilling. ONLY works with 2.9 scx6 inserts. 4pcs per package which is enough for one truck adding one tuning round per tire.


Tuning round dimensions: 155mm x 10mm 

2.9 Tuning rounds (4pcs) for SCX6 Anti-foams

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