Brake caliper parts

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hotshoe93
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Brake caliper parts

#1 Post by hotshoe93 » Fri Nov 23, 2018 10:34 pm

Brakes are dragging after I engage the brakes. Where is this best place to get a rebuild kit for the front and rear brake calipers.. pretty sure pistons are ok. Should just need the seals. Maybe I just need to disassemble and clean but it would be nice to have the parts on hand. Thanks
84 RZ350 Toomey
2003 FZ1 Yellow/Black
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JonW
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Re: Brake caliper parts

#2 Post by JonW » Sat Nov 24, 2018 6:41 am

Yamaha still sell em.
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hotshoe93
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Re: Brake caliper parts

#3 Post by hotshoe93 » Sat Nov 24, 2018 8:23 am

looks like they just seal the piston assy ? not sure I would need the piston as I am quite sure its all right ,probably just the seals or rings. bike has just been sitting and the caliper won't quite retract right, maybe just a good cleaning ? Thx
84 RZ350 Toomey
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
:smt026

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JonW
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Re: Brake caliper parts

#4 Post by JonW » Sat Nov 24, 2018 6:20 pm

Im sure they sell the seals on their own, speak to John at Economy Cycle, he has them.

https://www.economycycle.com/shop/yamah ... -w0047-50/
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com

hotshoe93
Posts: 55
Joined: Fri Nov 16, 2018 8:57 am
Location: Columbus Ohio

Re: Brake caliper parts

#5 Post by hotshoe93 » Sun Nov 25, 2018 7:53 am

anyone happen to have the part number for the front seal kit ? Thx
84 RZ350 Toomey
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
:smt026

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JonW
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Re: Brake caliper parts

#6 Post by JonW » Sun Nov 25, 2018 5:54 pm

look on partzilla.
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com

gpaddict
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Re: Brake caliper parts

#7 Post by gpaddict » Mon Nov 26, 2018 10:26 am

It usually doesn't require new seals. The brake fluid will "crystalize" over time in the groove behind the seal. Pick the seals out, and using a dental pick, clean the grooe out real well. Also, clean the dried on crap off of the seals by using your fingernail. Lightly grease up the seals and reassemble the caliper.
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Zedixe13
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Re: Brake caliper parts

#8 Post by Zedixe13 » Mon Nov 26, 2018 11:56 am

RZ pistons are stainless steel , they should be ok .

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JonW
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Re: Brake caliper parts

#9 Post by JonW » Mon Nov 26, 2018 8:48 pm

gpaddict wrote: Mon Nov 26, 2018 10:26 am It usually doesn't require new seals. The brake fluid will "crystalize" over time in the groove behind the seal. Pick the seals out, and using a dental pick, clean the grooe out real well. Also, clean the dried on crap off of the seals by using your fingernail. Lightly grease up the seals and reassemble the caliper.
The corrosion will push 'dents' into the rubber seal and they stay there once the seal is old. Seals are cheap, just replace them.
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com

justind97
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Re: Brake caliper parts

#10 Post by justind97 » Tue Nov 27, 2018 3:24 pm

Is there a part number for the rubber seal between the two halves?

hotshoe93
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Re: Brake caliper parts

#11 Post by hotshoe93 » Wed Nov 28, 2018 9:40 am

Partzilla only seams to list the whole piston assy.. sure I do not need the piston.. Thx
84 RZ350 Toomey
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
:smt026

justind97
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Re: Brake caliper parts

#12 Post by justind97 » Wed Nov 28, 2018 10:26 am

hotshoe93 wrote: Wed Nov 28, 2018 9:40 am Partzilla only seams to list the whole piston assy.. sure I do not need the piston.. Thx
You can get just seal kits from yambits and a few other places in the UK. Check ebay.co.uk under rd350 ypvs

The piston can be cleaned up with #0000 steel wool. Spend a lot of time cleaning out all the crud that's in the seal grooves of the calipers. After all, it is your life saving pieces that you're holding in your hands.

hotshoe93
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Re: Brake caliper parts

#13 Post by hotshoe93 » Thu Nov 29, 2018 8:13 am

looks like brakemasters on eBay us sells them. $20.
84 RZ350 Toomey
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
:smt026

jrodenhiser
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Re: Brake caliper parts

#14 Post by jrodenhiser » Thu Nov 29, 2018 2:31 pm

We have an aftermarket kit for just the seals, Yamaha only sells the fronts with the piston for some reason

https://www.economycycle.com/shop/yamah ... front-usa/

hotshoe93
Posts: 55
Joined: Fri Nov 16, 2018 8:57 am
Location: Columbus Ohio

Re: Brake caliper parts

#15 Post by hotshoe93 » Thu Nov 29, 2018 9:33 pm

Am I seeing that the xs400 caliper is the same as the rz350?
84 RZ350 Toomey
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
:smt026

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