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.

10/23/2026

Here's a closer look at our K-series oil pan. Early results are looking pretty good, as seen in the last reel, but we want to do better! Continuing to make revisions to get exactly what we want.

10/22/2026

Get entered today for a chance to win this fuel cell! Link in the bio!

10/18/2026

If you're thinking about tracking your K-series, you'll want to watch this! As promised, here's data comparing an OEM K-series oil pan to the first iteration of our Doryoku baffled oil pan. Both done back-to-back under the same conditions, at the same track, with the same driver, and the same car. Check out what we find as .speed throws K24 swapped BB6 Prelude around Brainerd International Raceway!

10/17/2026

A couple weeks ago, we went to BIR to continue testing and developing our K-series oil pan. We shared the track with only 2 other cars and could access the track anytime. These are the types of track days that really help when it comes to testing. We were able to capture some great data that'll help us make decisions as we continue to iterate. Stay tuned for some squiggly lines!!

10/13/2026

The BB6 Prelude traction bar kit is coming SOON... đź‘€ 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!

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Saint Paul, MN

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