Kelford Adjustable Cam Gear PAIRSingle adjustable cam gears to suit Nissan SR20 engines. Non VCS engines can use two of these to set each cam. By using modern CNC machinery and small batch runs with strict QA processes employed at each step in the production process we have been able to deliver a product with the best tolerances and quality levels in the industry. The gears have been CNC machined from highest quality 6061 T6 aluminium to more precise tolerances than original OEM