1977 Mugen 125 # 12 Steve Wise replica build

Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/14/2026 10:46am
LWC307 wrote:

Ok thanks. Working on a set now. Lots of things to do/make inc. flipping the lower clamp like you have done.

Yes, i had to just make my own stuff. I made extras if you need anything?

LWC307
Posts
164
Joined
1/9/2014
Location
AU
10/14/2026 2:46pm

Thanks but I need Suzuki based stuff though.

Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/15/2026 2:47am

Tires finally arrived. Got the front wheel on last night. Planning on installing the rear tire and wheel on the bike tonight. Then I will finally have a roller.4F1653E1-21C6-48C6-9D00-BC797688B24B.jpeg?VersionId=0Wvb8tsJ

4
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/16/2026 9:16am

Tires came in and I finally got the wheels on. Little bit of a challenge but I got everything to work out in line up pretty good. I had to do some custom work on the wheel spacers. Good thing I have a leave… Lol  We’ll have to do some work on the chain tensioner.
A4E343F6-893E-4337-9BCA-B54D5D2B70170585780E-14FD-4057-BA0C-31378F13F127.jpeg?VersionId= z

5

The Shop

Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/16/2026 9:20am

Also, I contacted my good friends at Throttle Jockey. I grew up racing motocross with them. They are working up the graphics and all the decals for this build. I can’t thank them enough. If anybody ever needs graphics or decals done contact Throttle Jockey

https://www.throttlejockey.com/

 

1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/16/2026 9:20am
0CA10B77-2560-467D-BFAF-B1DDD64E2F59
5
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/19/2026 8:51am

So I got the graphics kit in from Throttle Jockey.
 I installed it on the bike and I’m very happy with it but we are going to rotate the side panel numbers a little bit clockwise to straighten them up slightly.

EAF0A3B0-D2D6-4644-9C4F-965A222D7CA5.jpeg?VersionId=4683D817-3121-4540-BD80-56CF463A976956280FA2-F2D7-432C-89A7-00AE4036EC418525172A-4805-4AE5-842F-F6990B038EDC58CC19F2-4CC0-4DC6-ACC3-DE293A4EE613
2
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/19/2026 8:52am Edited Date/Time 10/19/2026 8:56am

Also, I got the carburetor, completely vapor-blasted and rebuilt ready to install.

9240838F-A049-4EDC-B6ED-7ADB64DEA5F9

 

1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/19/2026 8:53am
EA2A4787-3E9B-4DF5-8249-CCD31B1EF93D
1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/19/2026 8:59am

The NOS Mugen reed cage is installed.

And the NOS exhaust manifold is installed.

5C14514E-DCED-49AB-BDD0-72AC3E6C9EE6.jpeg?VersionId=Lto.e cflb5hUiMER9zqNZtZQ.nF47DD928-48F6-4D55-B08E-2703CBBD9C29

1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/19/2026 9:01am

The stater and all related electronics have been properly cleaned  re-furbished and reinstalled.

B56F695D-9918-4C75-BC77-BB5943012266.jpeg?VersionId=.TBk.4kC RLlgSliUuq xMXnA4eN
3
JMX82
Posts
1638
Joined
5/9/2013
Location
Hyllykallio, FI
10/20/2026 12:25am

This build is amazing! Keep up the good work! 

LWC307
Posts
164
Joined
1/9/2014
Location
AU
10/20/2026 1:36am

Yeah , its nice to see the old forum format to showcase a bike build. It's like pre facebook days.

1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/20/2026 6:11am

I was able to get the carburetor properly installed last night. Getting ready to configure a custom airbox for it. That will be a big project. Will have to install the exhaust pipe before that can happen though.
B6127F24-E4DC-4B64-BE81-562DAE17D654

3
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/20/2026 8:45am Edited Date/Time 10/20/2026 8:48am

Started working on the seat last night. New seat foam and seat cover coming. Taking apart this whole seat was really challenging. There was literally 1000 staples holding the seat cover on a case of extreme overkill.
762B7D5F-B8D0-4CF5-A57A-C8AE7C376D89.jpeg?VersionId=ztSMc7hT9F8TwuyuFksM IfB55756A1-AF12-422B-870B-38940A94B527

1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/20/2026 8:49am
CB638F39-9A46-4A3F-830C-24C419EBCB50.jpeg?VersionId=truQ96Zo JPqB0OI3B.2bWG

Ok

1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/20/2026 8:52am
F08D6E7D-13DF-46C5-87D0-008212B4F586.jpeg?VersionId=HqEl6
3
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/20/2026 8:53am

After what seems like ours just removing staples. I finally got the old seat cover off and seat foam.5FBD4AF2-3CD7-46E1-9E13-C31A2BCF4592

1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/22/2026 6:43am

Sheet pan is cleaned up and ready to go.9ED912BF-DDD2-4906-9211-CAA189AEBF25.jpeg?VersionId=nEyUfg2cIdlJ15MUsvveLIQ43C7FB97-F9AE-4F9E-8A9C-437600136E63.jpeg?VersionId=VtJ1C3

2
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/22/2026 6:46am

So I spent yesterday evening, mocking up the last remaining parts like the exhaust pipe and silencer, inner fender and left side panel to be cut to fit around the exhaust pipe and silencer. Just making sure everything fits before I do the final assembly. Also, I will be painting the exhaust pipe and silencer Black.B8D1A410-A40E-401D-92DA-20F1B5E7DBCB.jpeg?VersionId=eGF242EB6C-294F-4BD5-8502-1DBD91401563

2
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/22/2026 6:48am
C26B102B-0B6B-44BA-91E8-5DA50856BA9F06279076-1478-487E-9F0F-1AA5AE550E714C9D5810-BFCC-4028-9B5E-4ADE9B4977C1.jpeg?VersionId=FP0ydhNNH6sFjkUV8iKYpQ0b68FLhM
1
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
10/22/2026 6:50am
B024328A-A1EE-4FE1-9862-777429592872.jpeg?VersionId=yCC30E310-9A2E-443F-93F8-714B87DCB4DE.jpeg?VersionId=rVRdLvi B1HZNjiaAzXZG8U8ma5
10
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
1 day ago

I received the chain and front sprocket yesterday I was able to get them installed on the bike. I also received the new seat foam and seat cover. So I will be able to build the seat. I took the pipe off and painted it yesterday. Looks like I will be finishing the bike this weekend.

2
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
1 day ago
17EBACB5-D3A5-40A2-82B5-449CABFC45E7
3
Bluelion
Posts
1418
Joined
9/10/2013
Location
Lafayette, IN, USA
1 day ago
D1E508F6-B9DC-4B81-B8DE-0726EDA3C80181AD0C6E-8FCF-4121-A091-A721ED78274C
7
redman
Posts
85
Joined
6/16/2013
Location
east coast, MD, USA
1 day ago

Will you be finishing up the airbox as well, will it be aluminum? Looking real good.

moto9
Posts
251
Joined
11/11/2016
Location
Waimea, HI, USA
1 day ago Edited Date/Time 1 day ago

Will you add an aluminum chain block bar to protect the fox air shock?

Great build btw...a dream bike for most of us when we were kids.

Anyone remember the mxa cover with the $40,000 works bikes?

Your build is in that category!

1

Post a reply to: 1977 Mugen 125 # 12 Steve Wise replica build

The Latest