The Wiseco shelf-stock piston kit for BMW 2.5 12V M20B25 is a dish-top replacement set with an 8.8:1 compression ratio sized for an 84.0mm bore. Offered for engine rebuilds at the specified bore, these pistons provide the correct stock-dimension replacement when the 84.0mm specification and 8.8:1 CR are required for proper engine assembly and clearances.
Wiseco BMW 2.5 12V M20B25 Dish 8.8:1 CR 84MM Bore Piston Shelf Stock Kit