Is there a TSA Pre-Check at Spirit Terminal SLC Airport?

Yes, the Spirit Terminal SLC Airport has a TSA PreCheck lane. It is situated near Terminal 1's primary security checkpoint. The operating times are 4:20 a.m. to 8 p.m. and are flexible.
You need a TSA PreCheck membership in order to use the TSA PreCheck lane. TSA PreCheck applications can be submitted online, in person at an enrollment location that participates, or by calling 1-855-TSA-1-PRE (855-872-1777).