Slideworx arms are of high quality and performance, as used on championship winning drift cars!! Nissan Silvia S14 Castor Arms.- Increase wheel clearance on full steering lock.- If you have Knuckles these tension rods will help you get the most steering lock possible.- Fully adjustable- Tested both on the road and track.- High quality bearings to ensure road-use suitability- All our suspension products are designed and tested in Australia. - Made to our own specifications, with high quality welding.- One year warranty on all manufacture faults