The S471 with race cover is a higher flowing version of the standard 71. The race cover will allow for more air flow on the top end, without sacrificing spool up.
- With 'T4' twin-volute turbine housing, 1.10A/R, utilizing 83/74mm turbine wheel
- With high-flow, .66A/R compressor cover, utilizing 71.1/100mm compressor wheel, with Extended Tip Technology
- Compressor flow >98lb/min.