there are 3 fill valves integrated to the bottom of the surge tank

75 mm Stroke

CP Forged Pistons:

This results in quiet operation

Faster Data Logging: 512MB logging at 32-bit

BMW N54 Piston Set by Arias F90000274 there are 3 fill valvesArias Forged Pistons for BMW N54 84. 5mm Bore, 9. 5: 1 Compression Mixing Power & Affordability Arias Pistons, backed by 55 years of high performance piston engineering experience, now offers a piston set for the BMW N54 platform. Manufactured from Arias forgings in the CP Carrillo facility in California, USA, these 84. 5mm bore, 9. 5: 1 compression forged pistons offer race proven durability and precision machining at a competitive price. Arias