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This Wiseco Professional Series forged piston set is specified for Mitsubishi Evolution 4–9 applications and includes four HD2 asymmetric-skirt, gas-ported pistons at 86.75mm bore, size +.070 and a 10.5:1 compression ratio. Forged from 2618 aluminum in the USA, the set features precision ring grooves, an anti-detonation groove, ArmorGlide skirt coating and fully machined crowns, built for heavy to severe duty race builds.
Wiseco Mitsu Evo 4-9 HD2 Asymmetric Skirt Gas Ported Bore 86.75mm - Size +.070 -CR 10.5:1 Piston Set
