2018+ Softail Models Breakout

21 Heritage dual disc conversion

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Old Aug 15, 2022 | 03:49 PM
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Default 21 Heritage dual disc conversion

I have seen stuff about converting older bikes to dual front disc brakes, but what about the ABS models? I would like to convert my 21 Heritage to duals. Has anyone done that? Is it a nightmare with the computer/master cylinder? I plan on changing the lower legs out anyway, so thought it is a good time to get them in dual…

thanks much,
Allan
 
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Old Aug 15, 2022 | 11:23 PM
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Lower legs won't be the big issue. The wheel hub only has provisions on one side for the disk. Most likely someone makes a dual disk hub you'll have to add that to the total costs.
You'll also need a different master cylinder to match the dual disks.
ABS shouldn't be an issue as it based off the wheel rotation speed as well as speed differential between front and rear wheels.
 
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Old Aug 16, 2022 | 12:55 AM
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Originally Posted by NODYNA
Lower legs won't be the big issue. The wheel hub only has provisions on one side for the disk. Most likely someone makes a dual disk hub you'll have to add that to the total costs.
You'll also need a different master cylinder to match the dual disks.
ABS shouldn't be an issue as it based off the wheel rotation speed as well as speed differential between front and rear wheels.
ABS is definitely an issue. The mechanical gain of the brakes is programmed into the ABS. You would have to keep relationship of hydraulic pressure to braking torque the same for the ABS to work properly.
 
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Old Aug 17, 2022 | 09:38 AM
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Thanks guys. Looks like it is more headache than it is worth. Guess I’ll stick to what I have.
 
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Old Aug 20, 2022 | 12:30 PM
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LOL, I thought long and hard about it but went with the Arlan Ness Big Brake rotor and a 6 piston caliper. I am pleased with the result.
 
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Old Aug 20, 2022 | 07:38 PM
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Originally Posted by LoupGarou
LOL, I thought long and hard about it but went with the Arlan Ness Big Brake rotor and a 6 piston caliper. I am pleased with the result.
I looked into that but don’t remember seeing one for my 21 Heritage. Guess I’ll have to look again! Thanks for the info.
 
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Old Aug 20, 2022 | 08:37 PM
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Originally Posted by krvnrch
I looked into that but don’t remember seeing one for my 21 Heritage. Guess I’ll have to look again! Thanks for the info.
Not for 16" wheels. Maybe 18 or 19".
 
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Old Aug 22, 2022 | 07:20 AM
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Arlen Ness Big Brake Rotor

When I ordered it in 2020 I told them I had stock wheels, I do not know what the deal is now.
 
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Old Aug 22, 2022 | 09:02 AM
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Originally Posted by Hulkss
Not for 16" wheels. Maybe 18 or 19".
Ahhhh. Thanks.

Originally Posted by LoupGarou

Arlen Ness Big Brake Rotor

When I ordered it in 2020 I told them I had stock wheels, I do not know what the deal is now.
WOW! The rotor is almost as big as the wheel! Does that make it challenging to clean the wheel? Looks nice though.
 
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