Part number F2428P (Supertech BMEVI-1055S-HS) Ferrea super alloy exhaust valve STD BMW M3 / M4 / E90, E91, E92, E93, E82, E88, E89, X6, Z4, F01 - 3.0 (N55B30, S55B30) Head Diameter: 28mm Stem Diameter: 5.96mm Overall Length: 112.83mm Tip Length: 5.20mm Reference: 21 Degree Taper Flo. Stock size. Triple Groove. Super Alloy
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The Super Alloy Engine valves represent the highest level of sophistication in valve technology. These valves are designed to handle the extreme heat requirements and punishment of today’s Nitro Fuels, Supercharged, Turbocharged, Nitrous Oxide, and Marine race motors.