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sudhanshu_sabharwal
Sudhanshu Sabharwal
November 12, 2025
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Torque forge Innovation engines

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  • November 12, 2025
  • 26 replies
  • 183 views

Front Brake Master Cylinder – fitment & spongy lever after upgrade

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. Front Brake Master Cylinder – fitment & spongy lever after upgrade. 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.

Pinned Reply By sudhanshu_sabharwal

Did you match piston size to caliper piston area? Oversize MC can feel firm but weak; undersize can feel long/spongy.

26 replies

sudhanshu_sabharwal
Sudhanshu Sabharwal
November 14, 2025

Did you match piston size to caliper piston area? Oversize MC can feel firm but weak; undersize can feel long/spongy.

sudhanshu_sabharwal
Sudhanshu Sabharwal
November 25, 2025

impressive...

sudhanshu_sabharwal
Sudhanshu Sabharwal
November 25, 2025

very good

sudhanshu_sabharwal
Sudhanshu Sabharwal
November 14, 2025

Re-seat copper crush washers (new ones) and torque the banjo to spec. Micro-leaks = soft lever.

sudhanshu_sabharwal
Sudhanshu Sabharwal
November 25, 2025

If none of this fixes it, the MC might be defective—swap back to stock to isolate.

 
sudhanshu_sabharwal
Sudhanshu Sabharwal
December 1, 2025

If ABS bleed is painful, a dealer ABS-cycle routine saves time.

sudhanshu_sabharwal
Sudhanshu Sabharwal
November 25, 2025
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sudhanshu_sabharwal
Sudhanshu Sabharwal
November 25, 2025
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sudhanshu_sabharwal
Sudhanshu Sabharwal
November 25, 2025

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sudhanshu_sabharwal
Sudhanshu Sabharwal
November 25, 2025

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Sudhanshu Sabharwal
November 26, 2025

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Sudhanshu Sabharwal
November 26, 2025

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sudhanshu_sabharwal
Sudhanshu Sabharwal
November 26, 2025

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