The BorgWarner AirWerks SX S1BG turbocharger with T25 compressor flange and .61 A/R lists a 39mm inducer, providing a mid-range compressor choice for forced-induction systems. The combination of a .61 A/R and 39mm inducer helps balance spool and airflow for applications where a slightly larger A/R is desired without stepping up to the largest inducer sizes available in the family.
BorgWarner Turbocharger SX S1BG T25 A/R .61 39mm Inducer