Flips 1 Posted October 17, 2014 Share Posted October 17, 2014 I cant find one anywhere :( probably time to fab my own Link to post Share on other sites
Greg_E 211 Posted October 18, 2014 Share Posted October 18, 2014 I think Sonic has rear disks and I bet the hub mounting flange is pretty much the same. Caliper mount might be the only thing you need to make. And then you need to make a bracket to put bigger rotors up front. There is a popular mod for the Fiesta that moves the front caliper out for larger disks, still using the stock caliper and pads. With the larger rotor people say it stops a lot sooner, couple that with a rear disk kit for all around gains. Link to post Share on other sites
Flips 1 Posted October 20, 2014 Author Share Posted October 20, 2014 I think Sonic has rear disks and I bet the hub mounting flange is pretty much the same. Caliper mount might be the only thing you need to make. And then you need to make a bracket to put bigger rotors up front. There is a popular mod for the Fiesta that moves the front caliper out for larger disks, still using the stock caliper and pads. With the larger rotor people say it stops a lot sooner, couple that with a rear disk kit for all around gains. awesome thanks, cant believe i didnt think of the sonic =/ id still want to drill and slot them myself at least, sounds fun to try lol Link to post Share on other sites
Retired old Gearhead 201 Posted October 20, 2014 Share Posted October 20, 2014 Sparkies are so light that they really don't need rear discs. I can pretty well stop the Spark much faster than my big Impala V8 with 4 discs. Link to post Share on other sites
Schaltz 27 Posted October 20, 2014 Share Posted October 20, 2014 Yeah, drums in the rear does the job good. And allot cheaper to run. The Spark is made with old Daewoo and Opel parts, so something should fit. Maybe from the Corsa C or Merida. Link to post Share on other sites
Retired old Gearhead 201 Posted October 30, 2014 Share Posted October 30, 2014 Some mods are just, well, a waste of time and money. Rear disks are a big job with new hydraulics that need to be in sync with the front brakes to give equal pressure on all four wheels. My Spark stops fine the way it is and for now after ±30kmi the front and rear seem to be in sync with equal pressure. One way to test this is to do a minor braking on cool brakes and feel the rear brake hubs for heat. Link to post Share on other sites
mitogt 5 Posted October 31, 2014 Share Posted October 31, 2014 Here in my country there are a lot of small city cars with rear disks, there is a version of the Toyota Yaris hatchback with 1.5 L engine and it is supercharged, around 150Hp, really moves and has ABS, 4 wheel disks and 16 inch wheels, kind of pricey. The Spark brakes are good for its size. It is very light so with ABS should be enough Link to post Share on other sites
Bruce Marks 2 Posted November 29, 2022 Share Posted November 29, 2022 I wanted to add that I have had the brakes fade hard in very sprited mountain driving. This is also with upgraded drilled and slotted rotors. This is with the 2017 Spark. I am upgrading to the Powerstop z23 carbon ceramic pads on front, Motul 700 rbf fluid, and powerstop rear shoes. I am also attempting to replace the front brake lines with stainless braided lines from another gm application. I will keep the forum updated. I was looking at the Chevy hhr dual piston calipers as a possible upgrade option but some fabrication may be needed if this doesn't correct the brake fade at high Temps. SpicySpark 1 Link to post Share on other sites
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