Chevrolet Silverado 1500 2014-2018 | Silverado HD 2500/3500 2015-2019 | Silverado HD 4500/5500/6500 2019-2026 | GMC Sierra 1500 2014-2018 | Sierra HD 2500/3500 2015-2019 Mounting Base R1T / R1S Quick installation

Quick installation

Ditch the flimsy plastic holder for the Offroam aluminum phone mount

ensures rock-solid stability from Arctic cold to desert heat

Designed for versatility

Chevrolet Silverado 1500 2014-2018 | Silverado HD 2500/3500 2015-2019 | Silverado HD 4500/5500/6500 2019-2026 | GMC Sierra 1500 2014-2018 | Sierra HD 2500/3500 2015-2019 Mounting Base R1T / R1S Quick installationOffroam designs and makes world's best non drill phone mounts and mounting bases specifically designed for your Chevrolet Silverado 1500 2014 2018 Silverado HD 2500 3500 2015 2019 Silverado HD 4500 5500 6500 2019 2026 GMC Sierra 1500 2014 2018 Sierra HD 2500 3500 2015 2019. Compatible. This 20mm ball mounting base is compatible with all Offroam vehicle phone mounts and arms. Exceptionally sturdy. The mounting base installs into existing features on