|Every ounce of weight savings is crucial to getting the most performance out of your car. If you think you've done all you can, have you considered how much that leather wallet of yours weighs? Didn't think so. Trade that overweight, dead-cow-covered billfold for one of these super-light, stronger-than-steel, carbon fiber wallets. An added bonus is how well they protect your rear end in the event of a crash.
Carbon fiber wallet - $50
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