07 master cylinder rebuild kit?

2tone · Oct 9, 2023

I have a 07 FE450e and I'm losing brake lever pressure. I ordered the All Balls 18-1023 which shows as correct for my bike, but the floating piston was too large.

The Brembo shows part 7676.01 and either 06 or 90 in the circle depending how you turn it. I can't find anything about what kit would fit this M/C, and no idea why the 18-1023 kit does not fit. I sent a message to All Balls but have not heard back yet.

Trying to get this thing ready for a ride in about 10 days. Anyone know what kit I need?

2tone · Oct 13, 2023

I ordered the 18-1022 kit hoping that one will work, probably a long shot.

2tone · Oct 28, 2023

If it helps anyone, the All Balls kit 18-1023 piston measured 10.92mm at it's widest point, and didn't fit. I took a chance and ordered the 18-1022 kit, and the piston measured 9.93mm at it's widest, and matched what I had on the bike. 07 FE450e
My original part on the left, and the 18-1023 piston on the right:

Yamaberg · Aug 26, 2024

Ran into the same issue. Contacted AllBalls and waiting to hear back.

This is the third bike I've tried the 18-1023 kit on from their listed fitment guide that it did not fit.

The master cylinder on the KTM part is clearly stamped 10 on the under side of the master cylinder which is the bore.

The KTM 7676.01 and 7676.10 master cylinders that I have on several 01-08 era KTM and Husabergs all are stamped "10" and require a (10mm not 11mm) floating piston.

Thanks for pointing me to the 18-1022 kit 2tone.

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07 master cylinder rebuild kit?

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