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Spinervals Big Gear Strength

Item No. »  SP-BG

MSRP: $29.95
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Time to pump up those leg guns. The Spinervals Big Gear Strength training video helps you focus on low-cadence, high intensity work outs that will give your legs the power to weight ratio of a Saturn V rocket. It's a surefire way to increase your power and speed output through some serious, one-hour workouts....

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