Suzuki GSX1200 Inazuma Custom by Rusty Wrench Motorcycles

Suzuki GSX1200 Inazuma Custom Scrambler

A legendary muscle bike gets a burly, two-up makeover…

The Suzuki GSX1200 Inazuma was an oil-cooled muscle bike of the late 1990s, offering a neat 100 horsepower on tap and a quarter mile time of 11.3 seconds. The big standard may not win any beauty pageants in factory trim, but the tank and frame lines lend themselves to customization under the right eyes and hands.

Suzuki GSX1200 Inazuma Custom Scrambler

Enter Francisco of Rusty Wrench Motorcycles — located in Faro, Portugal. Francisco has made the step to building bikes full-time for his clients — the dream! For this build, the client wanted a true two-seat motorcycle with a scrambler-ish style.

Suzuki GSX1200 Inazuma Custom Scrambler

Below, we get the full story from the builder himself.

Suzuki GSX1200 Custom Scrambler: Builder Interview

Suzuki GSX1200 Inazuma Custom Scrambler

• Please tell us a bit about yourself, your history with motorcycles, and your workshop.

My name is Francisco and I was initially in the car custom business, but motorcycles were always a big passion in my life. I built my first bike in 2015, which was a success and since then I have been doing custom building to some friends. Now I am finally doing it full time for my clients! You can see other projects done in our website.

Suzuki GSX1200 Inazuma Custom Scrambler

I created the brand Rusty Wrench Motorcycles with an open store to the public with some accessories and clothes for biker lovers in Faro – Portugal, since last year, and it was an old dream came true!

Suzuki GSX1200 Inazuma Custom Scrambler

• What’s the make, model, and year of the bike?

This is a Suzuki Inazuma GSX1200, from 1999.

• Why was this bike built?

This bike was built for a customer.

Suzuki GSX1200 Inazuma Custom Scrambler

• What was the design concept and what influenced the build?

My client want a two seat motorcycle and I was inspired by the scrambler concept.

• What custom work was done to the bike?

The custom work done was the speedometer inside the gas tank with a gascap from another bike; the rear light was installed inside the frame, between the seat and the frame.

Suzuki GSX1200 Inazuma Custom Scrambler

A handmade license support was done and a handmade seat. The ignition and the start button was moved underneath the side covers.

Suzuki GSX1200 Inazuma Custom Scrambler

The engine was all rebuilt with stainless steel screws; dinojet and individual filters were installed in the carburetor to give a little bit more power.

Suzuki GSX1200 Inazuma Custom Scrambler

We’ve put a front inverted forks with six piston bombs; front and rear brand new brake disk rotors and a brand new rear suspension. Pirelli tires on front and rear.

• How would you classify this bike?


Suzuki GSX1200 Inazuma Custom Scrambler

• Was there anything done during this build that you are particularly proud of?

The license plate and the gas cap and speedometer inside de gas tank was a real success.

Suzuki GSX1200 Inazuma Custom Scrambler

Follow the Builder / Photographer

Instagram: @rwmotorcycles

Photographer credit: Edgar Costa
Instagram: @_edgar_costa


  1. Hey Francisco,
    my name is Markus and I am from Austria. I still work on my Inazuma and have some problems with the licence plate – i have the same idea like you but i can t finde a fitting sidearm. So i would like to ask you if yours is handmade or maybe from a distributor?

    Thank you

  2. Pierre-Alain

    Hi Could you tell me what is the exhaust system

    Thank you

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