Kit is for ABF 16V cylinder head to use our Hi Flow Valve 32.5mm X 27mm valves with 7mm stems necked down to 6.4mm. This complete kit includes 32.5mm intake valves , 27mm Inconel exhaust valves, 7mm tapered intake guides, 7mm tapered exhaust guides, 7mm stem seals, Titanium retainers, Single Groove keepers, Our HD Valve Spring Set. This kit will work with the std. seats. Will work in "ABF" cylinder heads. (Inconel alloy is a great for high temp use such as turbo/supercharged or high performance street with catalytic converters)

Inconel exhaust valves is a must for turbos and supercharged engines