“A Variant in the Katana World” Oil-Cooled Katana Inazuma 1200 Watani Installation, Vehicle Inspection, and More

It has better cohesion than just putting oil cooling on a katana!

The balance between the frame and engine
*gaps and such
is quite sharp (*´ω`*)

Well, it’s an Inazuma 1200 after all
so it’s only natural…
Today we’re going to install the Watani!
There’s even a Inazuma 1200-specific version!

This time, as expected

We’re going to route this ridiculously long clutch hose.

If you use an off-the-shelf product
you get the usual
problem: too short and it won’t reach
too long and there’s excess


Remove what needs to be removed
and make the layout
easier to work with!


The wiring under the Inazuma 1200 tank
is absolutely insane…
Packed tight! Crammed full!
No wonder so many people get frustrated
No doubt about it…

We’ll smooth out the corner radius.

For now, I’ve decided on the 6R that everyone loves (?)

For oil-cooled, we use NGK
Power Plug Cords!

Soft and with an integrated plug cap
A seamless, uncompromising design.

NGK X4K 102 degrees Black *4 pieces needed

We’re enlarging the plug cover to 20φ!

As is, it won’t fit
the NGK plug cord
so we’ll enlarge it with a punch.

With ribs standing around it, getting a clean finish is difficult

We’re correcting it with a rubber stone (*´ω`*)

It slides in nicely with a satisfying click! ♪

Don’t ever try to insert it without enlarging it.

This year, definitely P-TOUCH!
It’s useful for all sorts of things.

Essential labeling for your bike
Perfect for organization and tidiness!
P-TOUCH is resistant to chemicals and solvents
Highly recommended!
*Recommended tape width is 9MM

For crimping, use a dedicated tool.

POSH Plug Cord Crimping Pliers
UNV 810997


It’s not amazing, but
it produces a very solid finish.

Since the width is thin, you need to squeeze multiple times.


NGK Power Cable is 8φ, so
shave the outer diameter down to 7φ before using

クリエイティブファクトリー ポッシュ(Cf Posh)
¥2,986 (2026/09/22 15:35時点 | Amazon調べ)

Hmm, it’s looking pretty dark?

We’re also replacing the plug with a JR8B.
We’ve widened the gap
and installed the terminal!

Oil-cooled basically uses 102 degrees
pointing forward

The plug cords have plenty of room
for layout
so there’s no strain.

In case of any issues,
swapping “#2 and #3” or “#1 and #4”
is easy.

Keep the layout smart with plenty of room!

Now there’s even a Inazuma 1200-specific
Watani available!

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