Callies Subaru 83mm Stroke EJ Billet Crankshaft Turbo Oiling Tuning Port USB on board

Tuning Port USB on board

GrimmSpeed has proven that our exhaust products are some of the highest-quality and best-performing in the industry because of the detail oriented approached that we put into their development

Nano peened for faster break-in and less spring stress

but it provides a rounded lip to improve flow from the flange through the runner

Callies Subaru 83mm Stroke EJ Billet Crankshaft Turbo Oiling Tuning Port USB on boardDesigned for Maximum Effort engines, all SS (Sport Series) crankshafts are finished with the same care and detail as the entire line of Compstar crankshafts. All SS cranks are sold balanced, ready for assembly. SS crankshafts by Compstar feature the best metallurgy and heat treatment on the market today. Subaru EJ20 EJ25 Standard Features: Average weight 18 lbs All rod journals drilled for lightening Material certified by Callies in house