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Clutch line flare type
Posted: 07 Jul 2026, 23:46
by Beakster
Hi,
Need to replace my clutch line. Got some kunifer 6mm pipe on the way and M12 fittings.
What type of flare should I do? Does it matter? I have a tool for 1/4" SAE double flare so hope to use that.
Re: Clutch line flare type
Posted: 10 Jul 2026, 12:53
by Beakster
So I tried to flare the 6mm pipe I got with a commonly available 1/4" SAE tool. But because 6mm is smaller than 1/4" the pipe won't stay clamped.
I've found two options
Bond do a nice tool where you can buy the die and punch size you need and they have the bits for 6mm DIN, but no price given and when I called they were closed.
https://www.bondengineering.co.uk/flaring-tool-hand-held
This one on Amazon which I went for because it will arrive tomorrow.
https://www.amazon.co.uk/Wostore-Double-Flaring-Tool-Sizes/dp/B0GHY16M1S/
From what I've discovered the ISO/DIN bubble flare is the correct one for our clutches and brakes, but the tool is harder to find because most of the cheap tools target American sizes. SAE can work even thought the flare is different because the brake line is soft and will form into a suitable shape to hold pressure.