Same compressor covers, compressor wheels, and turbine design as the TNT55 ball-bearing series. This turbo requires a -6 feed and a -12 drain. Running it with a restrictor will cause premature shaft and thrust wear leading to failure.

Features a cast steel center section and the new turbine and compressor wheel designs. As a supercore, the entire unit weighs just 25lbs. With the largest T6 turbine housing attached, it's still under 65lbs.

Key Specs

• 98mm compressor wheel, journal bearing, cast steel center section
• Requires -6 feed and -12 drain — no restrictor
• Supercore weight: 25lbs; under 65lbs with largest T6 turbine housing
• Max operating RPM: 80,000
• Available in 112x102 or 114x108 T6 turbine housing, multiple A/R options
• Built to order

Frequently Asked Questions

What's the difference between the JB and BB TNT55?

The JB (journal bearing) TNT55 uses a cast steel center section, versus the billet aluminum center section on the BB (ball bearing) version. Both share the same compressor covers, compressor wheels, and turbine design.

Can I run this turbo with a restrictor?

No. Running the TNT55 JB 98mm with a restrictor will cause premature shaft and thrust wear leading to failure. It requires a -6 feed and a -12 drain.