Rough Country Speedometer Calibrator Chevy/GMC 2500HD/3500HD (24-25) Bumper Spacer the stock tune runs out

the stock tune runs out of steam on the top end while Derringer continues to pull strong

will vary meaningfully by tire and wheel manufacturer

D978917 and US Trademark Reg

increasing mid-range torque and top-end power

perform much better than the OEM shocks

Rough Country Speedometer Calibrator Chevy/GMC 2500HD/3500HD (24-25) Bumper Spacer the stock tune runs outFeatures Complete the final touch on your lifted vehicle with Rough Countrys Speedometer Calibration Device! Designed for ease of use, this device quickly and effortlessly recalibrates your vehicles speedometer to ensure accurate readings when using larger tires. Resolve Speedometer Discrepancies with Ease: Your vehicles computer is calibrated for stock tire sizes, meaning when you upgrade to larger tires, your speedometer will no longer reflect your