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If you’ve changed your truck’s tire size or rear axle gears, chances are the speedometer reading is off. Most late-model trucks use the vehicle’s speed to also determine fuel delivery, shift points and more, TS Performance’s developed the ReSpeed speedometer calibrator and speed limiter removal unit. The ReSPeed easily installs into your gas or diesel truck and by inputting your new tire size and/or rear axle gear ratio then the ReSpeed recalibrates and corrects your vehicle’s factory speedometer to fully optimize fuel milage and performance.

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