Filter Stoewer specs
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number of cylinders
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FR 4M 2121 cm3/129.4cuin 24 PS 24 bhp 18 kW
FR 4M 3128 cm3/190.9cuin 37 PS 36 bhp 27 kW
FR 4M 11150 cm3/680.4cuin 122 PS 120 bhp 89 kW