Spitfire Formula Four Lock-Ins 99A
$42.00
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Lock-In Shape – Asymmetrical shape that helps you stay locked in on grinds High Rebound Compound Formula Four Urethane – Formula Four urethane is unlike any other. Both in the streets and under high-speed stress tests in Spitfire's lab, Formula Four wheels retained more material, coned less and kept their original shapes and sizes longer than any other wheel.
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