KC's biggest drop-in turbo for the 6.0L, with dual ball bearing response.

The KC Turbos Jetfire S3R Gen 2 is a dual ball bearing Stage 3 VGT turbo for 2003–2007 Ford 6.0L Powerstroke trucks. KC spent years redeveloping and testing the Gen 2 design, and it's KC's highest-output drop-in VGT upgrade for the 6.0L. It runs well on stock injectors and is capable of 650–700 hp with larger injectors and supporting mods. It also keeps great street manners, so your truck feels lighter and more fun to drive.

Gen 2 dual ball bearing center section.

The upgraded Gen 2 dual ball bearing center section provides faster spool response and reduced bearing wear compared to journal bearing designs. This is the platform-level upgrade that separates the S3R from a standard VGT rebuild or a journal bearing Stage 3.

Big airflow, quick spool.

KC's redesigned, lighter and stronger 68x94mm single-plane point-milled billet compressor wheel extends to 100mm at the tips. It's housed in an upgraded .70 A/R race compressor cover with KC's signature drilled-hole anti-surge ring for maximum airflow. On the exhaust side, a redesigned 74x70 quick-spool 10-blade turbine wheel, new high-flowing vanes and an upgraded unison ring keep response sharp.

Key Features

• Gen 2 dual ball bearing center section
• 68x94mm billet compressor wheel with extended tips to 100mm
• .70 A/R race compressor cover with drilled-hole anti-surge ring
• 74x70 quick-spool 10-blade turbine wheel
• New high-flowing vanes and upgraded unison ring
• New VGT solenoid
• Works on stock injectors
• Capable of 650–700 hp with larger injectors and supporting mods
• Supports up to 205cc/75% injectors
• 100% drop-in, no modifications required
• Brand new, no core required
• Fits 2003–2007 Ford 6.0L Powerstroke

What Problem Does This Solve?

• Big power usually means big lag. Most Stage 3 turbos feel sluggish until RPM builds. The S3R's dual ball bearing center section and quick-spool turbine are designed to spool faster than other Stage 3 turbos, so you get high-horsepower airflow with strong street manners.
• Built trucks outgrow smaller turbos. Once you're running large injectors and serious fueling, a Stage 1 or Stage 2 turbo can't supply enough air. The S3R supports up to 205cc/75% injectors and 650–700 hp.
• Complicated big-turbo installs. Many high-horsepower turbo setups require compound kits or custom fabrication. The S3R is a 100% drop-in VGT that installs in the factory location.

Is This Turbo Right for You?

The S3R is built for owners chasing serious power on a 6.0L, especially trucks running or planning large injectors. It works on stock injectors if you're building in stages, but it shines on a fully built truck. If you're running injectors up to 190cc/30% and want a balance of towing and power, the KC Jetfire S2R Gen 2 is a better match.

Shipping Restrictions

Not available for sale in California.