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Front Brake Master Cylinder – fitment & spongy lever after upgrade

Forum|Forum|4 months ago
November 11, 2025
40 replies
260 views

Replacing stock master cylinder with an aftermarket unit. Lever feels a bit spongy even after a quick bleed. Looking for best-practice on piston size, banjo/crush washers, ABS compatibility, and bleed order.

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Best answer by Sudhanshu

Full bleed order matters on ABS bikes: MC → ABS module → calipers. Vacuum + reverse bleed helps.

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Sudhanshu Sabharwal

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sudhanshu_sabharwal

Sudhanshu Sabharwal

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sudhanshu_sabharwal

Sudhanshu Sabharwal

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sudhanshu_sabharwal

Sudhanshu Sabharwal

Test L1 pagination in control

Gainsight Product manager

sudhanshu_sabharwal

Sudhanshu Sabharwal

vTest L1 pagination in control

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sudhanshu_sabharwal

Sudhanshu Sabharwal

Test L1 pagination in control

Gainsight Product manager

sudhanshu_sabharwal

Sudhanshu Sabharwal

vTest L1 pagination in control

Gainsight Product manager

sudhanshu_sabharwal

Sudhanshu Sabharwal

Test L1 pagination in control

Gainsight Product manager

sudhanshu_sabharwal

Sudhanshu Sabharwal

vTest L1 pagination in control

Gainsight Product manager

sudhanshu_sabharwal

Sudhanshu Sabharwal

Test L1 pagination in control

Gainsight Product manager

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