Topeak SmartGauge D2 - Road Bike Shop

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Topeak SmartGauge D2
Price: $39.95
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Don't bother squeezing your freshly inflated tire--that won't tell you much. The Topeak SmartGauge gets it right with digital precision every time. It works with Presta or Schrader valves without having to switch out any parts, and it measures up to 250 pounds, so it will work with mountain tires, road tires, and even suspension components.