Designed specifically for the Subaru EJ20 and EJ25 engines. This follower size is 35mm OD. 5.00mm shim thickness. Followers sold individually to allow the perfect lash settings to be achieved. Graded in 0.03mm thickness increments. Please select the sizes you need. The geometry is designed around the OEM tip height meaning these followers can be used with OEM valves, or aftermarket valves using OEM geometry.Kelford Cams DLC Coated Buckets Feature: larger internal fillet and reinforced skirt. Increased rigidity increases both camshaft and bucket longevity. DLC coated follower surface decrease friction. Decreases surface wear and oil temps. Available in 17 'shim' thickness options from 4.70mm to 5.18mm. Disclaimer: Installation by a qualified tradesperson is strongly recommended.