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IS-F Front Calipers

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Old 04-10-23, 10:10 PM
  #16  
rdsterdave
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Originally Posted by 89is500
It does
Awesome, thank you
Old 04-11-23, 07:53 AM
  #17  
89is500
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Originally Posted by mleroux
Are you only running the ISF calipers and stock IS500 rear calipers?
Yes, there is currently no rear solution that maintains functionality of the parking brake
Old 04-11-23, 07:57 AM
  #18  
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Originally Posted by Vendetta
Thanks for all the great info! I too am curious about the pedal feel as well as the performance. Is there there more bite and less fade?
Pedal feel is the same. The bite corresponds to the brake pad compound you choose.

The brake pads are roughly twice the size of the OEM pads, so there is significantly more heat capacity and less fade.

I track the car regularly and needed an inexpensive solution for more track oriented brake pad options.
The following 2 users liked this post by 89is500:
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Old 04-11-23, 11:32 AM
  #19  
Vendetta
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Originally Posted by 89is500
Pedal feel is the same. The bite corresponds to the brake pad compound you choose.

The brake pads are roughly twice the size of the OEM pads, so there is significantly more heat capacity and less fade.

I track the car regularly and needed an inexpensive solution for more track oriented brake pad options.
How is the performance on track? Would you say it's adequate or would you recommend shelling out for a full BBK setup?
Old 04-11-23, 02:04 PM
  #20  
89is500
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The the front IS-F calipers are awesome with good pads and fluid, and pad swaps are super easy.

The OEM rear are lacking though. I usually burn through a set of rear OEM pads in 2 weekends.

I would recommend a more aggressive pad than the Endless MX72 I’ve been using for track use. They are completely glazed and overcooked by the 4th session. I’m looking at the Counterspace garage pads for my next set.



Originally Posted by Vendetta
How is the performance on track? Would you say it's adequate or would you recommend shelling out for a full BBK setup?
Old 04-11-23, 05:49 PM
  #21  
604GSE21
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does the ISF caliper clear the oem enkei wheels?
Old 04-23-23, 09:24 PM
  #22  
mleroux
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Originally Posted by 89is500
The IS500 in the video is mine. bolts right up, just need to bend or shave the dust shield a tiny bit. You can also use the existing brake lines.

I chose to do it for more brake pad options, and this upgrade is very cheap compared to the RCF caliper upgrade. I paid about $700 for both calipers from my local dealer.
How much bending / shaving is needed?
Old 04-29-23, 09:02 PM
  #23  
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Originally Posted by mleroux
How much bending / shaving is needed?
I would like to know as well. Also where can I order the ISF parts? Sorry I’m next to Lexus line so still trying to learn.
Old 05-05-23, 08:52 PM
  #24  
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Originally Posted by trooper141
I would like to know as well. Also where can I order the ISF parts? Sorry I’m next to Lexus line so still trying to learn.
I ordered mine from Bell Lexus in Arizona. But you can source these from any Lexus dealer really... FYI price varies from dealer to dealer though.
Old 05-05-23, 08:55 PM
  #25  
macmaster
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Why do ppl want to put a 10 year old part on a new car? Baffling.
Old 05-05-23, 08:55 PM
  #26  
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Can anyone, who has already done this swap, tell me if the bleeder screws on the ISF calipers are the same thread pitch and length as the rear IS500 OEM calipers? I want to install speed bleeders on my car and, from my research, it seems like M10x1.0 with 27mm length works on these ISF calipers, but will they work on the IS500 stock rear calipers?
Old 05-05-23, 08:56 PM
  #27  
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Originally Posted by macmaster
Why do ppl want to put a 10 year old part on a new car? Baffling.
IS500 stock front calipers = 4 piston calipers with relatively small pad surface area

10 year old ISF front calipers = 6 piston calipers with much larger pad surface area and broader brake pad options
Old 05-05-23, 09:00 PM
  #28  
mleroux
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And by the way... OEMs constantly recycle "old parts" on their "new cars." This keeps R&D costs at a minimum for things that simply work and there is no point in reinventing.
Old 05-05-23, 09:20 PM
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604GSE21
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please delete stupid computer crashed and double post lol..

Last edited by 604GSE21; 05-05-23 at 09:23 PM.
Old 05-05-23, 09:22 PM
  #30  
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Originally Posted by macmaster
Why do ppl want to put a 10 year old part on a new car? Baffling.
Porsche had been doing that for years, if it works and reliable why not...


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