King Motorsports Unlimited, Inc. - Mugen Performance Products for Honda and Acura

Mugen Factory: Machining Center



Here's a glimpse of the inner working of the Mugen factory- the Machining Center. The entire Machining Center is built on a giant pad that absorbs any vibrations caused by seismic tremors that could cause the sensitive machinery to go out of calibration.





1985: Mugen Rear Spoiler Lineup



Flip back your calendars with us to 1985 for this look at Mugen's rear spoiler lineup for Honda...

The Prelude - painted or unpainted:



  For the Accord and Vigor:



 For the EF Civic hatch:



For the City:



For the 1st gen CR-X (feeling patriotic?):



 Wind tunnel aero testing on a CR-X Pro. No corners are cut when Mugen design & engineer aero pieces!

Mugen CRX Postcard and Wind Tunnel Testing

In 1985 American Honda mailed this postcard to enthusiasts all over the US to help introduce them to Mugen competition parts.

 

Note the spelling of CRX for the US versus CR-X for Japan. How would you like to see these guys coming up behind you in your rear view mirror?




A Mugen CRX prototype in a full scale wind tunnel back in 1984- Validating all aero mods.


 

 

 

See also our pic of wind tunnel testing for the Mugen DC2 Type-R.


1984 Mugen Apparel, Sticker and Emblem Catalog


We recently dug up these wonderful Mugen catalog pages featuring the apparel, stickers and emblems they were offering for sale in 1984.


The red, blue, and navy shirt colors remind us of shirts we might have had in high school. You can see that Mugen's apparel designers were not afraid to experiment with variations of their Mugen logo and kanji.




Back in the day could have bought your very own Mugen driver suit! The back lists some of the motorsports Mugen had their hands into, including MOTORCROSS and RACING KART. Looks like there was a typo on the price ...




This blue button down would look great in the pits and have a very retro uniform / military look to them. We dig the gold collar. The white tee with red print has a very classic graphic on the front that still holds up years later.



These red, blue and white sweatshirts tug on the 80's era fashion sense. We'd rock these at the next Dyno Day!



Here's the page with hats, stickers, emblems and patches:



I'm not sure if these two hats could be any cooler. Especially the one with the mesh back! UNLIMITED POWER UNIT!




These patches play with rainbow gradations, 3D and unique layouts of the Mugen branding. COMPETITION POWER UNIT SUPPLIER just about sums it up.



CR-X fans will love that the CR-X PRO stickers are featured in this catalog. The front visor sticker properly curves to the front glass. The door graphics come in white or black. We've always loved that cool rear sticker that replaces the OEM CR-X sticker.



Hmm, can you abbreviate "suspension" as "sus."? Works for us!



More stickers! These days you rarely see the color blue used in Mugen branding.



These classic emblems came in multiple colors and sizes.



If you still have any of these unique items, let us know on the King Motorsports Facebook page!


You can see all of the currently available Mugen shirts, Mugen apparel and Mugen stickers on our online store.


Mugen First-Gen Integra 5-Door (and 3-Door)

Sadly we don't see too many first gen Integras on the streets these days. Even rarer were the 5-door versions. Here's Mugen's take on that very rare 5-door!




"INTEGRA CURCUIT FORM"



Check out the QUINT GSi sticker as well as the more familiar DOHC SPORTS Mugen sticker.


 

And here is the version with two less doors, in black! Heavy window and taillight tint really bring out the nose-to-tail graphic stripes!

 


Check out all our currently available performance parts for the first gen Integra in our online store!


Mugen Honda Civic AT Group.A Parts Catalog


Way back Wednesday- we are going to post the entire Mugen AT Civic Group A parts catalog. We think you'll be amazed at the depth of the parts Mugen made available. You could literally build a turn key competitive Group A Civic from this catalog.


Right-click on an image to see it larger.



The Mugen Group A Civic leads the way. The Group A series was hotly contested by Honda and Toyota with Honda typically having the upper hand...



Mugen Group A Civic engine parts. Forged Mugen pistons with special material connecting rods. There were a few iterations of the connecting rods through the years- some beautifully polished. The Mugen oil pan was a work of art! It strengthened the block and added oil capacity and helped eliminate windage resulting a a 5 hp gain all by itself. The Mugen 30/50 cams were very easy on the valvetrain and had a very sophisticated profile to work with the PGM-FI system.



Part 2 of the Mugen Group A Civic engine parts list- smaller diameter pulleys and the adjustable PGM-Fi ECU and controller. The Mugen hard rubber engine mounts were sold for both race and street cars and made a great improvement! Keeping the engine and engine oil cool was very important- anything over 225 degrees oil temp caused the engine to loose HP.....



Because FIA Group A rules state you must use the factory upper exhaust manifold, considerable time was spent developing the secondary to make the most power. Chromoly lightweight flywheel and AP racing clutch.



One of the big advantages Mugen had over the competition in Group A was a wide range of alternative gear ratios and final drives. With this gearing you could always keep the engine in it's fairly narrow power band. The Mugen Limited slip has been a mainstay of all Honda competition cars all the way back to 1973....



Moving on to the Mugen Group A Civic suspension parts. Here's where things get really interesting. Mugen Showa dampers and upper camber plates, and the really trick front reinforced knuckles designed to be used with an adjustable sleeve that gave even greater camber adjustment. All the different front torsion bar diameters made it easy to dial in the handling to suit the track.




Here we have the quick ratio Mugen steering box (RHD) and 21mm front sway bar. The Mugen rear trailing arms were made specifically to help keep the correct suspension geometry. Mugen made three rear springs rates available, However most opted for an even higher rate linear spring.



The Mugen Group A rear axle with adjustable Panhard rod. The Mugen internal sway bars really worked well and we sold quite a few to street and race enthusiasts. Check out those Mugen 15" wheels......!!!!



We have covered how Mugen made the AT Civic go and handle, so how did they make it stop? 4 piston AP calipers and full floating front brake rotors, single master cylinder and rear disc conversion with all the needed brake lines.



Here's the Mugen brake proportioning assembly and yes- the FIA required a hand brake.....



The Mugen Group A fuel system. A custom ATL 90 liter fuel cell with pump and swirl tank. Don't forget the Mugen gauge cluster with 10K tach. And Mugen SW-36 steering wheel to grab onto!



Lastly the Mugen aluminum FIA roll cage.....



Add up all those Mugen parts with a few hundred hours of labor and this will be you!

Cold Cranks: Mugen SW-36 Steering Wheel

 

Flashback with us to 1984 and the Mugen SW-36 steering wheel. This steering wheel was a popular item back then and is highly coveted by Mugen collectors to this day. When it gets to around -20 degrees F, the leather steering pad could contract and could cause the horn to blow continuosly in the middle of the night-resulting in seriosly cranky neighbors and a visit from the local police. Just sayin.....



We have the latest version of the Mugen steering wheel in stock and on sale!

http://www.kingmotorsports.com/p-826-mugen-racing-iii-steering-wheel.aspx

The Mugen City Turbo race car!


Mugen and Honda ran a single make racing series using the City Turbos. The cars were based on the production vehicles as were the motors. The motors had larger exhaust, injectors, production type turbo (with 22psi), production type intercooler, and a modified camshaft. These cars did the standing 1/4 mile in 13.5 seconds (which isn’t bad for a frontwheel drive car set up for circuit racing).


They ran very fat tires (9” front and 7” rear). The official Mugen figure for power output is 138+hp @ 5500rpm but the torque is around 22kgm @ 3500rpm (standard twin cam VTEC 1600 has 16kgm, NSX V6 has about 28kgm). It takes little work to produce these power figure in a street motor. The cars from the one make racing series were bought by an Australian entrepreneur with the vision for continuing the series in Australia. Unfortunately all the vehicles were in a warehouse in Osaka waiting to be shipped when an earthquake struck and buried the lot.



Update 2/20/2013:


If you were racing your Mugen City Turbo II in the mid 80's, chances are are you had this Mugen competition oil cooler kit.