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72-85 Sportster
Cast Piston Stroke 3,500" Bore 3,188" (80,9752 mm ) 9:1 Std. Cast Aluminium 1000 ccm (61 cui)Cast Piston Stroke 3,500" Bore 3,188" (80,9752 mm ) 9:1 Std. Cast Aluminium 1000 ccm (61 cui)