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Welcome to JRPW Racing! We are proud to be the most capable small engine machine shop in the business. We have the most extensive line of engine packages and produce winning results in all divisions. Stock Class or Open Modified, and anything in between, JRPW is the only choice! Glad you’re here. Precision machine work is essential to producing top notch horsepower. Before making an engine, or component decision, check out our machine shop, and compare. We are confident you will agree!

Welcome to JRPWRACING.COM, the online home of JRPW and Jimmy Rivers Racing. JRPW is the number one source for all your karting and small engine performance needs. 

We have the most advanced engine building and machine shop facility in the business, and use state of the art machinery and techniques to build the absolute best racing engines, cylinder heads, and components anywhere. We keep advancing and investing into the technology required to keep our customers at the top of their class. We also provide services and parts to other engine builders and do it yourselfers all across the nation. 

In complement to our racing engines and aforementioned products, we have an extensive inventory of all the parts and pieces to get you on track and into victory lane.

JRPW also provides service after the sale. We are not complacent and don’t expect you to be either. This is competitive motorsports and results matter. JRPW takes the steps required to help you make smart purchases and how to use them to achieve your goals.

Take a walk through our Web Store, learn from our tech archives and videos, and take a tour through our facility. Once you do, we are confident you will agree JRPW is the absolute leader in the industry. 

We are open Monday through Friday from 8-6 and welcome your visits and phone calls.

Thank You! Be Fast! 
-Jimmy

 
 
 
 
  EXCELLENT  
  
 Based on 76 reviews 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Kurt Herold 
 
September 21, 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
I'm the machinist.
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Colby Williams 
 
August 16, 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
Great all the way around
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Nicole C. 
 
February 24, 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
The best and fastest in the city!
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Slater Reeves 
 
November 25, 2024
 
 
 Trustindex verifies that the original source of the review is Google. 
Wanna Thank Jimmy for building me the most extraordinary Engine I have ever had!! This is a custom Built Engine with 38 / 45 HP With all the bells and whistles including a Built in Automatic start which allot of people told me wasn’t possible but he found a way and made it happen! Anyone who is looking for a custom build JRPW is the best look no further! Thank you!!
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 S. Wright 
 
September 17, 2024
 
 
 Trustindex verifies that the original source of the review is Google. 
Staff was friendly and prices were fair. Great work with quick turnaround.
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Gregory Seeding 
 
September 6, 2024
 
 
 Trustindex verifies that the original source of the review is Google. 
first class all the way around form the phone call to the finsh product.  5 stars
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Angela Maskey 
 
May 13, 2024
 
 
 Trustindex verifies that the original source of the review is Google. 
Extremely pleased with the exceptional quality of workmanship and professionalism!
  
 
  
 
 
 
   
 
 Verified by Trustindex  
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