Callies Subaru 79mm Stroke EJ Billet Crankshaft Exhaust Follow our staged upgrade path

Follow our staged upgrade path with pre-loaded Off The Shelf (OTS) maps or use custom mapping for any modification level

options and performance than any other gate

Throttle Position Sensor

Made to stringent quality standards

engine performance can be significantly improved by using these Cooper Ring gaskets that are supplied with INOX steel rings

Callies Subaru 79mm Stroke EJ Billet Crankshaft Exhaust Follow our staged upgrade pathDesigned 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