S&S Diesel Motorsport

S&S Diesel Motorsport

S&S Story


S&S Diesel Motorsport® is a world leader in modern diesel injection and vehicle controls. Drawing on many years of OE diesel injection and engine development experience, S&S Diesel Motorsport creates innovative products for top-level competition and CARB-compliant street use.  S&S products are made with industry-leading components, tested on world-class equipment, by the world’s best people. Whether it’s in-house dyno testing, real-world high performance, or on-road durability solutions; S&S Diesel Motorsport fuel systems are on another level!

Listen to our story, as told by one of our founders, on The Truck Show Podcast (14 min to 60 min).


Our Capabilities

Custom Multi-Injector Station

Custom Multi-Injector Station

Injection Rate Shape of Six Injectors Simultaneously

Precision Injector Testing

S&S Diesel Motorsport uses custom injector testing equipment, modified in-house, to thoroughly validate every product to a level of standards that exceed OEM capabilities. Measuring injection rate shape of complete sets simultaneously, and measuring the complete profile of five injection events per simulated combustion cycle are a few of the capabilities of the S&S fuel lab.




High-Pressure Pump Testing

High-Pressure Pump Testing

Modified CP9 Flowing 1,632 L/hr

High-Pressure Pump Testing

S&S Diesel Motorsport is capable of testing all sizes and models of high-pressure fuel pumps to varying speeds and outputs. Our modified test bench is capable of spinning a 1,850 mm³/rev CP3 pump in excess of 6,200 RPM to test durability in a high-rpm racing environment. 





Engineering Consulting

Engineering Consulting

Failure Analysis with Instrumented CP4 High-Pressure Fuel Pump for OE Client

Engineering Consulting

Many years of OE fuel system and engine development experience have given S&S Diesel Motorsport engineers the insight and skills crucial to providing world-class consulting services. Manufacturers like Cummins, GM/Duramax, and PACCAR, to name a few, trust the expertise of S&S engineers.



Engine Dynamometer

Engine Dynamometer

Wagler Streetfighter Duramax Durability Testing

Engine Development & Testing

Drawing on many years of OE-level engine development experience, the engineers at S&S Diesel Motorsport have the skills and mindset to thoroughly test any common rail diesel engine platform. The S&S engine dynamometer cell has the ability to gather critical engine performance data, including 8x cylinder pressure channels.




On-Site Support

On-Site Support

Calibrating a Diesel-Powered Monster Jam Truck

Engine Control & Calibration Support

Other than developing and manufacturing fuel systems, S&S Diesel Motorsport also provides turn-key engine control packages that utilize the most advanced electronics available and are fully supported by the S&S calibration experts.



Force Industries Road Race Semi Truck

Force Industries Road Race Semi Truck

Featuring S&S Fuel System and Bosch Motorsport Control Package

Extreme-Duty Motorsport Applications

S&S Diesel Motorsport has successfully developed common-rail diesel fuel systems for engines of all sizes and applications, ranging from 1.5L to 19L.




50state LML CP3 Conversion Kit

50state LML CP3 Conversion Kit

CARB-Compliant Solution to LML Duramax CP4 Pump Failures

CARB-Compliant Solutions

The automotive aftermarket is changing and S&S Diesel Motorsport is leading the way towards CARB-compliant products that solve durability problems, rather than increasing performance. Products such as the 50 State LML Duramax CP3 Conversion Kit, the Gen2 6.7 Power Stroke Disaster Prevention Kit, and the new SAC00™ LB7 Duramax Injectors are examples of  CARB-compliant solutions developed by S&S Diesel Motorsport to address known durability issues.