Delighted by the cornering! The oil-cooled GSXR750/1100 repro rear reservoir hose is something you’d want to replace at the same time as a rear brake overhaul.

We have products like this too!
That’s what M-TECH announced when we got the main harness from them.

Wait, this…Rear reservoir hose…It’s a pretty niche product.
Since few people overhaul the rear brake master, not many people pay attention to this hose.
When thismolded vent hose is discontinued, it becomes a real problem.

What’s sold by Kijima and others
is straight, so it takes a bit more work to lay out properly.
The easiest option is to replace the entire reservoir tank with a modern one, which is also possible.
However, you’d need to make brackets and such, so the time and cost add up a bit.

But this product this timeis an OEM repro, so it just bolts right on!
It’s such a convenient item.
I bet most people haven’t replaced it in nearly 30 years.
Since it’s a thick hose, I don’t think it will tear,
but I think it’s about time to replace it.
So I’ll introduce it a bit.

株式会社ヒロチー商事 楽天市場店
¥6,930 (2026/09/21 08:35時点 | 楽天市場調べ)

Basically there are two types! Early 18-inch or 17-inch

Early 18-inch type
MTSR-697-27A Compatible models
GSX-R750 F/G/H 85-87
GSX750RR 86
GSX-R1100 G/H/J 86-88

株式会社ヒロチー商事 楽天市場店
¥6,930 (2026/09/21 08:35時点 | 楽天市場調べ)

Later 17-inch type*Note: RK is different!

MTSR-697-17C

Compatible models
GSX-R750 J/K/L/M 88-91
GSX-R1100 K/L/M/N 89-92

株式会社ヒロチー商事 楽天市場店
¥6,930 (2026/09/21 08:35時点 | 楽天市場調べ)


*New product* Limited production* Rear reservoir tank hose GSX-R750RK

MTSR-697-07D

Compatible models
GSX-R750 RK ’89

As expected, limited edition models have different details.
AndI’m impressed by the manly spirit of selling products for limited edition models with such small production numbers.

The hose is secured with a clip, keeping it simple (*´ω`*)

Suzuki 09401-13417

株式会社ヒロチー商事 楽天市場店
¥123 (2026/09/21 08:35時点 | 楽天市場調べ)

It’s just a hose, but it’s also a hose, if you know what I mean.
Why not consider it together with a rear brake overhaul!

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