Interstate Transmissions is your local transmission specialists, specializing in transfer cases and differentials, transmission repair, transmission rebuilding, new transmissions, light truck transmission repair and rebuild in Winchester, Front Royal, Stephens City, Berryville, Inwood, Martinsburg, Frederick County, Clarke County and surrounding areas. If you are searching for a local transmission specialists, specializing in transfer cases and differentials, transmission repair, transmission rebuilding, new transmissions, light truck transmission repair and rebuild in Winchester, Front Royal, Stephens City, Berryville, Inwood, Martinsburg, Frederick County, Clarke county and surrounding areas please call us today.