Power. Precision. Personality.
- Apparel and gear for diesel junkies
- DIY performance parts and upgrade kits
- Bolt-on diesel performance upgrades
- CP3 / CP4 pump testing services
- Common rail fuel injector testing
Merch
Built For Diesel Junkies & Horsepower Freaks
Merch
$19.99
Start your morning with 15 ounces of boosted beans. This coffee mug is for diesel fanatics who know their coffee’s just a warm-up before the spool.
$19.99
Built for diesel junkies and horsepower freaks, the OG Stroker Pump Snapback Hat brings bold attitude in every stitch. Featuring a premium embroidered patch and flat bill, this hat’s ready for wrench time or wide-open throttle. Adjustable snap closure means one size fits all – just like your love for boost.
DIY Performance
Power Gains Without Price Pains
DIY CP3
$395.00 – $478.00
More Flow. Less Cost. Real Performance Gains. Unlock hidden power from your truck with the Motorsport Diesel DIY Stroker CP3 Kit. This precision-machined upgrade boosts fuel output without the price tag of a high-dollar stroker. Built by the original stroker CP3 pioneers, it delivers real flow gains with proven reliability. With an easy-to-follow installation process, this kit puts performance back in your hands. Whether you’re towing, racing, or daily driving, this is the fueling upgrade your truck’s been waiting for. Build it yourself. Feel the difference.
CP3
$59.99 – $159.99
If you’ve encountered the rare CP3 clearance issue where the new shaft won’t rotate a full 360° due to manufacturing variances these pre-machined tappets are your quick and clean fix. Each set has been precision-machined to reduce height by ~0.5mm, eliminating interference with the shaft. Just swap them in using our CP3 Tappet Tool (required [...]
$99.00
Choose ‘Include Tool’ when buying a DIY Stroker CP3 Kit and save $30 compared to buying the tool separately. Designed specifically for removing and reinstalling CP3 pump shafts with precision and ease. Machined in-house from heat-treated chromoly steel for maximum strength and durability. Built to handle the job without damaging your components. For: 2007.5-2025 6.7 [...]
CP3
$49.99
This 3-piece toolset is built for all CP3 pumps, giving you precision control and one-handed operation. Durable, compact, and includes replacement gripper pads and a storage case.
Coolant System
Stay Cool Under Pressure
-14%
Coolant System
Original price was: $349.00.$299.00Current price is: $299.00.
Maximize Performance. Minimize Heat. Protect Your Engine. Overheating rear cylinders are robbing your 1998.5-2018 Dodge Cummins 5.9L & 6.7L of power and longevity-fix it in under 30 minutes with the Motorsport Diesel Coolant Bypass Kit. Engineered for superior cooling efficiency, this billet aluminum kit relieves excess pressure, reduces water pump strain, and prevents costly engine wear. Featuring a precision pressure relief valve, it dynamically regulates flow-something a thermostat simply can’t do. Whether you’re towing, daily driving, or chasing horsepower, this is the upgrade your Cummins can’t afford to go without. Get yours now and keep your engine running stronger, longer.
$109.99
The 24 valve 5.9 and 6.7 engines have 11 steel press in freeze plugs beneath the valve cover. These press in plugs can be blown out due to a combustion leak from a head gasket failure. Engines equipped with a multi layer steel head gasket, can actually leak under high cylinder pressure and reseal themselves [...]
Testing Services
What’s Really Going On Under the Hood?
Testing Services
$49.99
Complete diesel injector testing using OEM specs. Get accurate flow data, diagnose issues, and avoid unnecessary replacements.
$219.99
High-pressure CP3/CP4 pump testing and flow optimization. Diagnose pump issues, improve performance, and support larger injectors.