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Supertech Cosworth Yb Exhaust Valve 32 15mm (+1) X 6 95 (- 1)mm X 106 70mm / Tip 3mm / Inconel / Chrome Coating / Dish Face / Swirl Polish main stud kit CR6697XPC King Bearings Race XPCSupertech Cosworth Yb Exhaust Valve 32 15mm (+1) X 6 95 ( 1)mm X 106 70mm Tip 3mm Inconel Chrome Coating Dish Face Swirl Polish