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1200s caliper front

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  #1  
Old 18th July 2022
MaximumEffort MaximumEffort is offline
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Default 1200S Fork Slider Differences 1999 to 2000

Hello All,

I am looking for a way to put Brembo P4 calipers on a 1999 1200S front end and I see from the forums that some have been successful with PM and other brands. Adapters do exist from TC Bros for those calipers but only for 2000-up and I do see that the slider part numbers are different for those model years (46022/40623-96 vs 46022/46023-00). Is it a difference in the caliper mounting pin spacing or something else that makes the plate incompatible with 1999 legs?

Thanks!
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  #2  
Old 18th July 2022
Bluto Bluto is offline
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All Sportsters went from single piston to dual piston front brake calipers in 2000 IIRC
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  #3  
Old 18th July 2022
MaximumEffort MaximumEffort is offline
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Default

Yep, I believe that's correct, but what I'm wondering is what I need to put dual pistons on a 1999 1200S. Is it direct bolt on or is there a difference between the fork sliders that would require some sort of adapter?

The fork slider part numbers change between 1999 to 2000 but I don't know if the change affects the caliper mount spacing or not (or if it is just because the MoCo added reflectors in 2000 :-)
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  #4  
Old 8th August 2022
96hugger 96hugger is offline
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Default

Yes an adapter is need, the caliper bolt spacing is not the same.
RC componets makes a nice one
stillkickinmoto makes adapaters for tokico SV650 calipers as well
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  #5  
Old 9th August 2022
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Hippysmack Hippysmack is offline
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Get some 2000-2003 S forks
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  #6  
Old 9th August 2022
84rzv500r 84rzv500r is offline
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i have 2 sets of 1999S forks and triples with VRod 4 piston calipers on them that I ran for years on my 99S and my 83 XR1000 in my parts pile. They work very good you have to have/make an adapter and shim the calipers also note that the HD 4 pistons WILL NOT work with wire wheels. check the clearance on mags if your not using the OEM 99S front wheel...Wilwood calipers are a bolt on and require no adapters... . I went to the 2012 XR1200X/Performance forks front and rear piggy backs on both bikes with the XR1200X calipers front and rear... huge performance difference...
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Old 10th August 2022
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Why not just install a Wilwood GP310? Easy, two bolt install and better quality than Brembo. Cost you about $250 to get a top of the line 4 piston caliper.

But, perhaps they don't make one for the right side, IDK.

John
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Old 11th August 2022
84rzv500r 84rzv500r is offline
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Quote:
Originally Posted by John Harper View Post
Why not just install a Wilwood GP310? Easy, two bolt install and better quality than Brembo. Cost you about $250 to get a top of the line 4 piston caliper.

But, perhaps they don't make one for the right side, IDK.

John
they make Left/right and rear... it's a good choice IMHO, I chose the "stock" harley part route cause thats what i decided to do... its the best part about sportsters... you can build it any way you want...
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Old 12th August 2022
John Harper John Harper is offline
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Quote:
Originally Posted by 84rzv500r View Post
they make Left/right and rear... it's a good choice IMHO, I chose the "stock" harley part route cause thats what i decided to do... its the best part about sportsters... you can build it any way you want...
Yes, I have just a single Wilwood up front. Braking is remarkably better. I immediately realized how crappy the stock caliper worked.

John
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Old 12th August 2022
84rzv500r 84rzv500r is offline
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Quote:
Originally Posted by John Harper View Post
Yes, I have just a single Wilwood up front. Braking is remarkably better. I immediately realized how crappy the stock caliper worked.

John
on the "S" models the brakes were a bit better since 2 crappy calipers is better than one... I was really close to going with the willwoods as i have experience with them on my 1971 wide body corvette, however I picked up a couple sets of VROD 4 pistons on fleabay and run them for years then i found XR1200X complete front end on fleabay and the XR1200X parts are very nice Tokico 4 piston parts... and the rest as they say is history
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