Custom Parts & Accessories

throttle bodiesCustom Billet Throttle Bodies

Custom billet throttle bodies with 5 1/4" stainless throttle plates.

Throttle bodies are designed with Holley 4500 bolt pattern 

5 1/4" Throttle Plates



throttle plate high performanceExtra Thick Throttle Plates to protect from backfire bending.






billet air cleanersCustom Billet Air Cleaner Assemblies

Made to order for your application




fuel injection nozzlesCustom Fuel Injection Nozzles

Highest atomization rate on the market.






custom fuel pump drive plates 1 inch raisedFuel Pump Drive Plates

Standard cam location to 1" raised.


oil primer 12 voltElectric 12 Volt Engine Oil Primers

Never forget to put your drive belt on again.

Prime your motor any time from the driver's seat!




custom chrome moly tube framesCustom Built Chrome Moly Tube

Frames for 4X4 Pullers

Be a winner right off the trailer with one of our digital scaled frames.

Tired of your truck bouncing and hopping?  Smoother truck = less broken parts and more wins!

Dana 80 Custom Wheel Spacers

Custom wheel spacers for Dana 80 rear axle.   They allow you to move rear wheels In closer to frame to stop axle flex.  These spacers are for dual rear wheel set up








It is my pleasure to right a letter of endorsement for Hagedorn Racing Engines.  My family and I have been involved in the Truck and Tractor Pulling circuit since the late 1970’s.  I got acquainted with Terry and Sheila Hagedorn through local events and competitions.  I found Terry to be a man of great knowledge as well as a fierce competitor.  Hagedorn’s were always the competitor to beat. 

I started doing business with Hagedorn Racing Engines in 2008 when Terry built the engine for my Hot Shot Pulling Truck.  I found Terry to be an amazing workman with great craftsmanship.  The products and services you get with Hagedorn is surpassed by none other.  You get a one-on-one personal service.  It’s pretty rare to actually get to talk to and communicate with the man building your motor, which is exactly the case with Terry Hagedorn. 

Hagedorn Racing Engines will customize your engine for your personal needs and the needs of your truck.  Nothing is “assembly-line” work with Terry.  Hagedorn tries to match your motor with your truck, the driver and what works best for each.  Every engine built is one-of-a-kind custom made, and built to customer specifications.  You will find no exact replica of it anywhere.

Terry Hagedorn also makes himself available for questions.  He always welcomes my phone calls with questions, information seeking or simply asking for advice.  
I personally appreciate Hagedorn Racing Engines, they are a great competitor and a great family to work with.

The Hagedorn engine in my Hot Shot pulling truck took points championship with Outlaws in 2009 and again with the X-Caliber Association in 2013.  

Ryan and Bob Gooden