This Wiseco piston set is specified for BMW 2.5L M50B25 24-valve engines with an 85.00 mm bore and an 8.8:1 compression ratio. Supplied as a complete six-cylinder piston set, it matches the factory bore and compression spec for the M50B25 application. Use it when rebuilding or refreshing the 2.5L M50B25 engine to restore correct piston dimensions and combustion ratio.
Wiseco BMW 2.5L M50B25 85mm Bore 24V 8.8:1 Piston Set - 6 Cyl