Doryokumfg

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Doryokumfg Specialty parts designed for track car optimization. All parts are engineered and manufactured in Minnesota, USA.

We offer custom valve covers, bumper bars, suspension arms, and CNC billet components for Honda/Acura, Mazda, and Toyota.

10/13/2026

The BB6 Prelude traction bar kit is coming SOON... 👀 Photos and details to come even sooner! Tag a homie that needs it!

10/11/2026

We accomplished some more product testing today at Track Day Picnic. It's always a good time catching up with the track homies, walking the paddock, and seeing our products being used as intended!






10/09/2026

It's raffle time ya'll! was super gracious and sent us an RA-Series fuel cell to raffle off to support the Hero Time Racing program. The fuel cell also includes their beautiful FCST-in sur-X dropge tank system! Head over to www.doryokumfg.com to purchase a Hero Time Racing t-shirt! One shirt = One entry! Get yours now!!!

10/01/2026

Valve covers, our first love ❤️ ! We've put in a ton of time into refinishing OEM valve covers throughout the years. We're confident when we say that we have the best OEM refinished valve covers on the market. CNC machined grommet surfaces, CNC baffle removal, refinished/zinc coated baffle plate, new hardware, and powdercoated in any color you want. Oh, custom modifications too! Shaved letters or ports and install of bungs or fittings. The product speaks for itself; we ain't afraid to show the underside 👀 ... Guaranteed to have a 100% clean valve cover for your engine!

09/26/2026

Cole Hanzel putting in some work on an EK rear bumper bar! Lots of bars in the queue now that there's no more waiting on pre-orders. Bars in stock and ready to be customized to your specs!

09/23/2026

The Hero Time Racing TSX rocks both front and rear Doryoku bumper bars. The front bar utilizes dual tow hook provisions that make recovery, towing, and dyno time a breeze! The red matches the livery perfectly... Bumper bars now in stock and ready for customization!

09/22/2026

Mounting pucks! These are simple yet effective mounting solutions that can be added to your bumper bar for bolting on accessories such as oil coolers, splitter rods, and intercoolers! They accept M8x1.25 bolts and are made in 1 and 3 inch lengths. Head over to the website (in the bio) and customize your bar today!

09/17/2026

If you own or plan on buying an ATI or Fluidampr pulley, you're going to NEED this Doryoku crank adapter. These dampers are a tight fit and must be pressed on and pulled off. This adapter was designed to work with the ATI and Proform install/puller kits on the market. For whatever reason, these kits don't include the crank adapter that works for our Honda engines. Buy don't worry... we got you! In stock and ready to go!

09/15/2026

I think we owe an explanation to the 300,000+ viewers from our last reel 😆... or do we not? Haha... As we develop this baffled K-series oil pan, we thought it'd be a fun experiment to visualize the behavior of the oil as it interacts with the baffles. It's a little hard to see, but we made the top baffle out of poly specifically for this dummy pan so that we can see everything that's going on. We understand that this isn't the most accurate and thorough test; Many things would obviously need to change like raising the poly cover, running a pump, aligning the pan with the pan on the engine, etc etc... we aren't basing our results on this at all... Oil pressure readings from the logs will be king and we'll provide that data when we gather it.

Comments from the last reel have been... interesting. Some of you had really great questions! We'll be performing more testing soon and will be releasing more information on design philosophy and expected features. We hope to bring a tested verified oil pan option to the market for you guys! Stay tuned!

09/11/2026

We've been working relentlessly on a new product we're wanting to bring to the K-series market. We had the opportunity to do a little testing over the race weekend and gathered some important data to help us move forward in the development. Stay tuned for more info!

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Saint Paul, MN

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