The poster child of the big bike boom: the Kawasaki GPZ900R Ninja. Radiator replacement & cooling system hose replacement, left switch replacement, shift operation check, and more

The GPZ900R sure was everywhere back then!

I have the impression that Kawasaki bikes had really loud exhaust notes. Maybe in today’s world you can’t even warm them up properly?

Wasn’t there a vibe back then where it was kind of okay on main roads?
Everything was pretty laid-back and had a certain charm to it.

Let’s start by taking off the cooling system parts.

The owner said they don’t need the oil cooler, so we’ll remove it.

Such a great item is available for purchase.
Oil cooler-less bypass pipe kit (for GPZ900R)

Since it’s a pipe, it’s perfect for those with tight muffler layouts! You don’t have to worry about aluminum fitting deterioration, so it looks really good.

The drain is also avoided, making it super simple!
The part quality is good too,
and I find myself thinking what a great era this is.


A bit too much came out and some gravel got in, so we’ll make a call on whether to top it off or replace it.

We’ll take this tube off too and clean it up while we’re at it.
We’re a bit short on parts, so we’re ordering more.

I’ve gotten pretty good at removing the upper cowl lately.

That’s all for today!

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