This Ferrea Competition-Plus intake/exhaust valve set is intended for 2019 and newer Toyota Supra B58 engines, supplied as a set of 12 with +0.5mm oversize dimension. The valves conform to the listed size and fitment for B58 cylinder heads, providing the oversize valve option required for porting or seat work when that exact diameter is specified by the engine builder.
Ferrea 2019+ Toyota Supra (B58) 29mm 5.96mm 99.80mm +.5mm OS Comp Plus Ext Valve - Set of 12