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We managed to find a source for an F88 caliper that lined up with the existing hardware used in our Wilwood Superlite kit. The F88's are no longer in production so this kit is a one shot deal.
As soon as the brake hose adapters arrive mid August, we'll ship the full kits. Pre-order now to guarantee you get one. Once they're gone, no more.
Wheel clearance template on the website. You print it on paper, cut it out and use for fit check. Just as we do with our other BBK's, we'll 3D print a tool you can borrow to check in your wheel. We'll upload the step file to thingiverse for those of you that have a 3D printer.
We won't offer an upgrade kit for those with our Superlite kit. The only thing that's kept is the brackets. Hoses, hats, calipers, rotors all different. Overall, the F88 kit will do everything better than the Superlite kit. The downside is a bit less wheel clearance.
We'll update the wheel clearance list on the product page as we get feedback from customers. The Superlite version of this kit fits just about every 15x9.
1.25" Wilwood 160-2898 / 160-2899 directional rotors. Spares readily available everywhere for $64 each
Works with our 3" duct kit
Retains Boxmount bracing
Uses the same huge 7420 pad as the Superlite
Staggered aluminum pistons (Superlite has symmetrical steel pistons)
What is the piston size for these calipers? just thinking ahead for rebuild kits. Thanks
1.25/1.375 or 32/36mm
Both AFCO and ST full rebuild kits exist but you can also find the seals separately. We'll stock a few of each but have the part numbers in the instruction sheet.
You know, I hear you. We discussed this before deciding to do the kit. In our product meeting we decided we wouldn't do it unless we could add value and offer something different. Once we found that we could adapt our existing BX1175 duct kit and use our boxmount brackets it became a no brainer. Because of that, it's far from "copying" someone else's idea. We've known for a long time that we'd like to do a 11.75x1.25 rotor kit. We tested the design on one long before any of those other DIY kits existed. With the closeout pricing of the calipers we were able to guarantee sufficient inventory to be worth investing in the ancillary bits to offer a PNP kit, and offer a superior kit for LESS than the Superlite kit. We have had people asking us for this kit, but we can't offer it without securing a known supply of calipers.
I'm glad you grabbed a set of AFCOs before this, too. I'm glad that has worked for you, and others who chose to go the DIY route. But there are a lot of folks out there who want these huge brake kits but don't want to use a custom ring like our BX1175, or maybe they don't like Wilwood, or maybe they don't want to deal with sourcing things from several suppliers to piece together a brake kit. Before this kit you had to choose between a properly designed duct solution/superior mounting solution vs. the thicker friction ring. Now folks can click a button and get the best of everything. They'll get the support we are known for, including rebuild kits, installation help, etc. Judging by the response we've had, this was generally a good move. We've sold almost as many F88 kits in 24 hours as we've sold BX1175 kits in the last quarter.
The platform dies when people stop developing for it. We don't want the platform to die so we will continue to develop parts for it. If that makes us lame, well, guess we're lame then.
You know, I hear you. We discussed this before deciding to do the kit. In our product meeting we decided we wouldn't do it unless we could add value and offer something different. Once we found that we could adapt our existing BX1175 duct kit and use our boxmount brackets it became a no brainer. Because of that, it's far from "copying" someone else's idea. We've known for a long time that we'd like to do a 11.75x1.25 rotor kit. We tested the design on one long before any of those other DIY kits existed. With the closeout pricing of the calipers we were able to guarantee sufficient inventory to be worth investing in the ancillary bits to offer a PNP kit, and offer a superior kit for LESS than the Superlite kit. We have had people asking us for this kit, but we can't offer it without securing a known supply of calipers.
I'm glad you grabbed a set of AFCOs before this, too. I'm glad that has worked for you, and others who chose to go the DIY route. But there are a lot of folks out there who want these huge brake kits but don't want to use a custom ring like our BX1175, or maybe they don't like Wilwood, or maybe they don't want to deal with sourcing things from several suppliers to piece together a brake kit. Before this kit you had to choose between a properly designed duct solution/superior mounting solution vs. the thicker friction ring. Now folks can click a button and get the best of everything. They'll get the support we are known for, including rebuild kits, installation help, etc. Judging by the response we've had, this was generally a good move. We've sold almost as many F88 kits in 24 hours as we've sold BX1175 kits in the last quarter.
The platform dies when people stop developing for it. We don't want the platform to die so we will continue to develop parts for it. If that makes us lame, well, guess we're lame then.
Will you guys at least provide the rotor hat and bracket to mate these calipers. I also sent a message on the website hoping to get get a price for the rotor hats and brackets for both sides. Hoping they will be similarly priced as the 11.75 x 1.1 hats and similar price to the ND Miata 11" caliper bracket.
I replied to your email, check spam if you don't see it.
We could offer that, but it won't be from this first group of hats. We had a few sets of BX1175 hats modified locally to use with the F88 calipers which adds cost. We have ordered some to be premade to the correct dimensions that will cost a lot less - we can offer a bracket/hat/fitting/line kit at that time.
I see obvious advantages to your brake ducting, but I already have these and would run them to save a few hundo on the initial buy in.
I don't think there will be any interference between our Superlite or F88 kit and the 2/2.5" Singular duct. Not something we have checked though. Those smaller ducts aimed at the inner rotor face won't be nearly as effective as our 3" duct aimed at the center of the rotor.
Before this kit you had to choose between a properly designed duct solution/superior mounting solution vs. the thicker friction ring.
I would argue thats not necessarily the case...
I have the Foxhole backing plate ducts which are aimed at the hat, not at the rotor face like the singulars(which is a garbage way to do it IMO). Now maybe they arent a 3" duct, they are 2.5", but at least its aimed properly...
I ALSO have one of the 11.75x1.25/Afco setups.
I wont comment on your caliper mount vs. the ones I have because I am not an engineer to know if one is actually better than the other or just different to allow your duct to fit on that side vs. the other side of the knuckle.
I have the Foxhole backing plate ducts which are aimed at the hat, not at the rotor face like the singulars(which is a garbage way to do it IMO). Now maybe they arent a 3" duct, they are 2.5", but at least its aimed properly...
I ALSO have one of the 11.75x1.25/Afco setups.
I wont comment on your caliper mount vs. the ones I have because I am not an engineer to know if one is actually better than the other or just different to allow your duct to fit on that side vs. the other side of the knuckle.
The difference in flow between 2.5" and 3" is far more than you'd think, and with the brackets on the DIY kits there's almost no room for air to flow into that area, it's largely blocked by the bracket. While those ducts are probably better than the singular setup, it won't be by much.
The difference in flow between 2.5" and 3" is far more than you'd think, and with the brackets on the DIY kits there's almost no room for air to flow into that area, it's largely blocked by the bracket. While those ducts are probably better than the singular setup, it won't be by much.
I'm not going to argue about the size... I would have rather had a 3" duct, but 2.5 is what I have so it is what it is.
But to say that because the brackets are different you wont get any air because the bracket blocks the path, I dont think you are even familiar with the Foxhole Fab ducts...
Yup, brackets totally in the way blocking air flow... LOL
Those ducts look pretty well designed. Still 2.5" though. It has been a long time since we did the test but we took the length of hose needed to go from the nose back to the caliper. Then tested the actual air flow volume and velocity with different diameter flex hose. The 2" did basically nothing. The 2.5" flowed a medium amount but only when the hose was dead straight. As soon as we put a 90° bend in it the flow choked quite a bit. The 3-in when straight flowed a ton and lost very little with a single bend. However even with the 3", if we put several bends in it, the flow disappeared. So the 2.5 is better than nothing but the 3" is where you're going to get the big flow.
If you have both diameters of hose laying around the shop, measure out how long the hose needs to be. Lay out a straight length of it and put a leaf blower or some other source of directed air with a cheap anemometer / CFM gauge. Then put a single 90° bend in it. You can find the meters on Amazon for not too much. Science!
Don't have much else to share on fitment. We do update when customers send us info but we don't always get much feedback. Clearance is very very similar to the Superlite kit.
07-27-2023, 06:45 PM
F88 BX1175 big brake kit @ Supermiata
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