The Fast Brakes rear disc brake conversion kit swaps out the flaccid drum brakes for a mammoth 10.95″ diameter drilled and slotted rotor. This is substantially larger than the 9.4″ diameter rotor of an EM1 Civic Si and admittedly, rather dwarfs the OEM Civic Si caliper that the Fast Brakes kit uses. Megalophobic? Well then, there is also a 10.2″ diameter kit available from Fast Brakes that also uses the OEM Civic Si caliper.
Getting back to the point, instead of more used, slightly defective and stolen parts, the Fast Brakes rear disc brake conversion kit comes with a fresh pair of OEM Civic Si Calipers. Often, when calipers sit around in the elements unused, the sliders and pistons will rust and seize and the piston seals may also begin to go bad. In my opinion, the bit of extra money spent for a new or rebuilt set is worth avoiding the hassle of dealing with a caliper that looks and functions like it was brought up from the wreckage of the Titanic.
The Civic Si calipers are mounted to the factory Civic hub with an aluminum dog bone bracket. Note how two of the holes on the bracket are slotted. Apparently, different models of Honda Civics came with varying sizes of suck. Some models had 180 MM diameters of suck, while others had 200 MM. Since the two sizes used different hole patterns, the slotted holes allow one bracket to fit both eliminating any issues during installation.
Since our Project Civic will be a dual-purpose machine and it’s unlikely that we’ll be swapping out the rear pads for tracks days, Fast Brakes stuffed our Civic Si calipers with a set of Stop Tech’s Street Performance brake pads. The Street Performance pads have the low dusting and rotor friendly characteristics of a good street pad, but also yield the same consistent, linear brake response at high temperatures as they do at cold temperatures. This consistency at various temperature ranges make the Stop Tech Street Performance perfect for an application like autocross where the brakes are essentially stone cold upon the first stop, but blazing hot at the end.
Yeah, parking brake cables are usually nothing to get excited about compared to a sexy pair of oversized, drilled and slotted rotors, but after dealing with my 240SX that has been lacking an e-brake for years, the fresh set of Civic Si cables that come with the Fast Brakes kit are probably the part that I appreciate the most about the kit. Having a functioning E-brake is kind of like that old saying about air. It’s only important when you don’t have it.
The finishing touch of the Fast Brakes kit was of course a pair of steel braided lines. Just like the brake lines from the front kit, the brake lines that came with the Fast Brakes rear conversion kit are wrapped in a stainless steel braid, which protects them from abrasion and combats expansion from the hydraulic pressure. This equates to better pedal feel. Also, note the plastic piece located between the brake fitting and the steel braided line. This semi-rigid piece of plastic reduces the likelihood of a stress concentration, which might occur at the junction between the stiff fitting and the flexible line.
Well Project Civic fans, that’s all for now. As always, you can read more on Project Civic. Or, wait patiently for the upcoming articles on the install of an ES bushing kit or a super trick ASR sway bar. Hell, maybe I’ll finally get around to assembling that long rod engine I’ve been spouting off about. Nonetheless, stay tuned to MotoIQ for more nerds gone wild.
Reference: 2005 Honda Civic LX 4-door sedan.
Is there a conversion kit, from rear drum brakes to rear disc brakes, for left and right side?
If so, details requested.
L LUM (Mr.)
I have a 2007 honda civic LX with stock drum brakes in the rear.want to convert to disc .what do i need and how much will it cost for a conversion kit.
Following the links is your friend!
I have a 2000 Honda Civic ek1. The back is drum brake. I want to change it to disc brake. But I don’t know what to buy and where to buy. Can you give me some advice. And what I need to buy pls.
The EK should be the same as this car.
How much do I looking at if I wanna do it for back left and back right side.
I have91 Hondacivic 4d sedan and l need rear brake conversion kit from drum to disc brake with red color .Is it possible?
What rear brake conversion kit do I need for my 98 Honda civic lx?
Thanks for this awesome write up, my question is exactly what kit was used. Sure following the link sends me off to fast brakes, but I can’t seem to find this kit unless I’m missing somthing.
They have a kit for an 88-95 drum to disc
And a kit for the integra or 96-2000 civic with disc brakes.
I have a 1998 EJ6, from what I’ve read on the forums the 88-95 kit could possibly work.
So im just asking for clarification.
Call Fastbrakes and talk to them.
Have a honda civic lx want to give my rear drum brake a conversion for disc brake..what brake kits that will fit for my rear brake
Um there is a whole article about that here.
I have a Civic LX 2002/03 made Brazil, and I would like to install the disc kit on the rear wheels. This kit is ideal. Where can I buy?
Thank you very much for the post. It is very enlightening. Hug! Marco.
Hello i would love too no how can i get this Brakes Rear Disc Brake Conversion Kit its for my 1999 honda civic ex
The article gives all the info
Would this fit a 1998 honda civic ek hatchback?!
Part numbers for kits you write about would save people time.
Following the links in the story can be useful.
Will this fit on a 2002 Honda Civic 4 dr VTEC?
Hey I am now finding this and want to rear disc swap on my civic build of a 99 Civic EX Sedan. I have looked around and alot of places say I need to replace the trailing arms on the car to get the swap. Does the fast brakes kit require us to replace the trailing arms? If so where can I go to get the right ones I need?
So hey I have a 99 civic Sedan and everything I read it’s saying that I need to but new trailing arms to do the rear brake swap from drum to disc. Is this kit able to keep the trailing arms I currently have or do I need a separate one?