Compound Turbo Kit for Cummins | Boost 5.9L & 6.7L Performance for 1st Gen, 2nd Gen, 3rd Gen & 4th Gen
The Best Twin Turbo Upgrade for Cummins Diesel
Upgrade your 1st Gen, 2nd Gen, 3rd Gen, or 4th Gen Cummins diesel with a DPS compound turbo kit. Whether you’re towing, racing, or daily driving, these twin turbo systems deliver cooler EGTs, better drivability, and more horsepower—from stock up to 1100 HP. Choose from multiple stages based on your goals.
Available Turbo Stages:
Stage 2.5 Max 625hp S362/68/.70 over S475
Stage 3 Max 650hp S362/68/.70 over S480
Stage 3.5 Max 625hp S362/68/.70 Ball Bearing over S475
Stage 4 Max 650hp S363/68/.70 over S475
Stage 4B Max 675hp S363/68/.70 over S480
Stage 4.5 Max 650hp S363/68/.70 Ball Bearing over S475
Stage 4.5B Max 675hp S363/68/.70 Ball Bearing over S480
Stage 5 Max 700hp S363/73/.80 over S475
Stage 5.5 Max 700hp S363/73/.80 Ball Bearing over S475
Stage 6 Max 750hp S363/73/.80 over S480
Stage 6.5 Max 750hp S363/73/.80 Ball Bearing over S480
Stage 8 Max 1100hp S366/73/.80 over S480
Stage 8.5 Max 1100hp S366/73/.80 Ball Bearing over S480
How to Choose Your Kit:
Multiply your current horsepower by 1.25 to estimate post-install HP. Choose the appropriate stage, Cummins year, Turbonator® VGT option, and any large turbo upgrades using the dropdowns on this page.
Performance Features:
- Direct bolt-on fit for 1988–2018 Cummins trucks
- 3-piece high-flow exhaust manifold included
- Large high-flow air filter & factory air box compatibility
- Kevlar/Nomex-lined silicone charge pipe (better flow & easier install than metal)
- Ball bearing turbo options for faster spool-up
- S400 atmospheric turbo + wastegated S300 high-pressure turbo
- Computer flow model tested using CFD for precision air and exhaust performance
- Lower EGTs by up to 500°F
- Up to 30% horsepower increase (e.g., 500 HP truck gains 125–150 HP)
- Supports towing, performance, and daily driving
- Optional VGT for exhaust brake capability
Why Compound Turbos Work So Well:
- Dual-stage compressors multiply boost efficiently and lower intake air temps
- Boost-to-drive pressure ratio approaches 1:1 for improved cylinder pressure
- Increased oxygen leads to complete combustion and more power per stroke
- Cooler air molecules carry away heat (like bypass air in a jet engine)
Kit Includes:
- S300 and S400 turbos (except piping/Stage 1)
- 3-piece exhaust manifold
- All required charge pipes, oil lines, and air intake components
- Downpipe or exhaust adapter (based on year)
- Gaskets, clamps, bolts, and hardware
Fitment:
Fits all 5.9L and 6.7L Dodge Cummins trucks from 1988–2018 including:
1988–1993 | 1994–1998 | 1998.5–2002 | 2003–2007 | 2007.5–2018
Additional Notes:
- Head studs recommended for:
- 1988–2002 engines over 48 psi
- 2003–2007 over 55 psi
- 2007.5–2018 over 45 psi
- Fire rings suggested for boost levels over 55–65 psi depending on year
- 2002 & older kits include a 4” downpipe; 2003+ bolt to factory exhaust
- Not CARB exempt (our exhaust manifolds are)
- 2nd Gen trucks with auto transmissions require trans cooler relocation (available for $149)
Other Options:
Get the most out of your Cummins. Upgrade to a DPS Compound Kit and feel the difference in every gear.
