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Front Brake Master Cylinder – fitment & spongy lever after upgrade

Forum|Forum|2 months ago
November 11, 2025
42 replies
203 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.

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

Sudhanshu Sabharwal

Newest first L1 reply D

sudhanshu_sabharwal

Sudhanshu Sabharwal

inner reply to check sort

sudhanshu_sabharwal

Sudhanshu Sabharwal

new reply

sudhanshu_sabharwal

Sudhanshu Sabharwal

3rd level

sudhanshu_sabharwal

Sudhanshu Sabharwal

Check L1 level from destination

sudhanshu_sabharwal

Sudhanshu Sabharwal

Check L1 reply from control

sudhanshu_sabharwal

Sudhanshu Sabharwal

Check L1 reply redirect at GE-236962

sudhanshu_sabharwal

Sudhanshu Sabharwal

Check the tiny return port in the reservoir isn’t clogged.

sudhanshu_sabharwal

Sudhanshu Sabharwal

https://sud-en.ge-236962.almostinsided.com/rebelskin-paint-wraps-349/front-brake-master-cylinder-fitment-spongy-lever-after-upgrade-613

sudhanshu_sabharwal

Sudhanshu Sabharwal

Scroll on new L1 post not working WORKS

sudhanshu_sabharwal

Sudhanshu Sabharwal

check url

sudhanshu_sabharwal

Sudhanshu Sabharwal

chec redirect and url

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