Mike 458 Report post Posted April 14, 2019 Starting to look at a BBK again and I know the Reyland kit is the popular option but I've also been looking at the godspeed kits and the k-sport option. I'm sure someone had a spreadsheet of how different kits affected the brake bias but I can't find that anymore! Options I'm looking at: http://www.reyland.co.uk/subaru-impreza - the standard kit with reyland discs https://www.godspeedbrakes.co.uk/311-big-brake-kits- - either of the kits - although the 6 pot may be overkill? http://www.tuningdevelopments.co.uk/product_info.php?cPath=502_625_628&products_id=1387 What are people's opinions on the k-sport or either of the godspeed kits? Would be looking for advice mainly on how they change brake bias and pad choice availability. Share this post Link to post Share on other sites
Deacon 1357 Report post Posted April 14, 2019 Nothing to add but interested in the responses. The Godspeed kits both look very good vfm. Share this post Link to post Share on other sites
jw191 22 Report post Posted April 14, 2019 Also interested in response. Discs and pads may need to be replaced soon anyway so contemplating upgrades. Also interested in approx fitting costs. Share this post Link to post Share on other sites
Lauren 2259 Report post Posted April 14, 2019 It's hard to know how to respond to this one too. All the kits look good value. I've got the 330mm Reyland 4 pot AP kit. It's fantastic. I did not go with K Sport as they are a lesser known brand and I was concerned that replacement pads choices may be more limited. But really I wouldn't touch K Sport because they are not well known compared to the likes of AP and Brembo. From what I understand if you put a set of 4 pot Brembos for an Impreza it messes up the brake bias. The Reyland kit doesn't have this issue. Just to add I've had the Reyland non-floating discs on for a year and a half and 20K miles. No problem at all whatever the use. I think my pads and discs will likely last another 20K miles, which makes it good value. Share this post Link to post Share on other sites
Varelco 211 Report post Posted April 14, 2019 I think it's a case of you get what you pay for. From what I remember the Godspeed discs have straight vanes as opposed to curved and the calipers themselves are smaller and cheaper. I don't imagine you compromise on quality maybe just outright performance, I'm tempted to go for the 4 pot kit as it will do everything I'd need, I suppose it depends on your requirement. The brake snobs of world would steer towards Brembo or AP because well, they're Brembo and AP... but I can't say I've heard any horror stories on K sport. They have been knocking around for quite a while, some say they're pants other say their good and others say the are copies of Tarox but I've never seen any evidence behind any claim, standard internet talk. Share this post Link to post Share on other sites
Deacon 1357 Report post Posted April 14, 2019 I think @will300 looked into this quite a bit before having the Reyland kit so may well be able to help Share this post Link to post Share on other sites
Badger 63 Report post Posted April 14, 2019 In the ford scene (where I came from) ksport are fitted to loads of cars with no problems but they will squeak with light use. My car had ap 6 pots on the front that had been on there for 9 years + and had been badly painted (prior to me getting the car) but we're faultless. The Muppet who painted them painted everything in situ including pads, pins, bolts etc.Sent from my LYA-L29 using Tapatalk Share this post Link to post Share on other sites
Badger 63 Report post Posted April 14, 2019 I'm looking into getting a hi-spec front setup and have spoken to them about having a custom rear setup to match which they can do. Only in Dartford too. One thing to keep in mind is pad availability unless you always by 2 sets so you have a spareSent from my LYA-L29 using Tapatalk Share this post Link to post Share on other sites
Lauren 2259 Report post Posted April 14, 2019 As Jeff said, Will did indeed do his research which was of great benefit to me when I was looking to upgdrade my brakes. Maybe have a read of this, plenty of info: 1 Mike reacted to this Share this post Link to post Share on other sites
VAD17 479 Report post Posted April 14, 2019 I had KSports for 1.5yrs now. More than 10 track days and finishing 2nd set of yellowstuff pads later still like them.If I were to choose now, I would either go with them again or go for Reyland AP kit with their own disks. Reyland's kit included Ferrodo DS 2500 pads, so like-for-like (with Reyland rather than AP disks) they are not that much more expensive Sent from my SM-G973F using Tapatalk Share this post Link to post Share on other sites
BOBEL 73 Report post Posted April 14, 2019 I don’t post on here much but I can certainly speak to the quality of AP 6pots, I run a gt86 racecar and have completed >15 Trackdays now and still on my original Ferodo DS3000 pads and I assure you I am not easy on brakes. The 6 pots are expensive but the braking power is immense, the bias with 4pots on the rear is perfect and I rarely trigger the abs unless I get on them terribly late. Share this post Link to post Share on other sites
Badger 63 Report post Posted April 14, 2019 I don’t post on here much but I can certainly speak to the quality of AP 6pots, I run a gt86 racecar and have completed >15 Trackdays now and still on my original Ferodo DS3000 pads and I assure you I am not easy on brakes. The 6 pots are expensive but the braking power is immense, the bias with 4pots on the rear is perfect and I rarely trigger the abs unless I get on them terribly late. what size discs out of interest?Sent from my LYA-L29 using Tapatalk Share this post Link to post Share on other sites
BOBEL 73 Report post Posted April 14, 2019 Front are 32mm x355mm float in disc type 1 Badger reacted to this Share this post Link to post Share on other sites
Badger 63 Report post Posted April 14, 2019 Front are 32mm x355mmI'm guessing the rears are standard diameter?Sent from my LYA-L29 using Tapatalk Share this post Link to post Share on other sites
BOBEL 73 Report post Posted April 14, 2019 Yes same as standard I believe 24mm x 335mm Share this post Link to post Share on other sites
Mike 458 Report post Posted April 14, 2019 @Lauren brand doesn't really bother me, as long as they're decent. Pad choice with the k-sport is a valid point that I've not checked but it's one of the more expensive options as with DS2500 pads it's not much cheaper than the reyland kit. Although, if I was to go with the reyland kit I'd be tempted with the AP discs to get the curved vanes. Out of interest, how quickly did your reyland kit ship? @Varelco I'd expect the godspeed discs to be straight vaned just like the reyland ones which isn't a deal breaker if it's saving me £500! It all depends on the brake bias of the brembo kit really. The AP calipers will be fine. @VAD17 so, nothing wrong with the k-sport but with the same pads the price difference doesn't justify getting a cheaper brand? Share this post Link to post Share on other sites
will300 812 Report post Posted April 14, 2019 @Mike Here some of my observations of the various kits - bare in mind I thought about this for 18 months before committing to the Reyland kit. I actually ordered but then cancelled both the Essex AP Racing Sprint kit and the Godspeed AP kit, before settling on the Reyland kit, this was after speaking with @Ade and one of the technical team at AP Racing. These are for the approx 330mm kits (355mm+ kits have different requirements) Reyland - AP Kit: Pro's: AP Caliper - CP9200 (2 piece aluminum body) 4 Pistons Dust Boots - Made by Brembo Perfect for Street and track Common Pad Size 330mm x 28mm discs - 2 piece Good thermal capacity High quality caliper by premium brake manufacturer. Keeps stock brake bias Complete kit - Calipers, Pads, Brake lines, brackets, discs Various disc options - Either bolted or floating brake disc hat/bell. AP or Reyland disc's. Clear's the majority of 17" wheels Latest design of caliper by AP Racing - including new paint finish Used by various members of the community - with extensive track use Con's: Reasonably expensive Custom made brackets, which you need to shim to get perfect fitment Won't fit under stock wheels without spacer. Godspeed - Brembo's: Pro's: Brembo caliper 4 piston Dust boots 330 x 28 discs 2 piece discs Cheap Con's: Unknown caliper model Unknown caliper material Unknown piston sizes - not sure what effect this will have on brake bias Unknown pad size No brake lines included Godspeed - AP Kit: Pro's: AP Caliper - CP9040 (2 piece aluminum body) Dust Boots - Made by Brembo Common Pad Size Good thermal capacity High quality caliper by premium brake manufacturer. Latest design of caliper by AP Racing - including new paint finish Con's Reasonably expensive Caliper designed for a 362mm disc - not 330mm as included Caliper designed for a 32mm thick disc - not 30mm as included Ø330mm disc in this caliper will leave a fairly large gap between the discs OD and the calipers disc pathway and this gap can be prone to collecting road debris. 6 pistons - overkill No brake lines included K-Sport: Pro's: Cheap Used by various members of the community - with extensive track use Clear's the majority of 17" wheels Complete kit - Calipers, Pads, Brake lines, brackets, discs 330mm x 32mm? disc - 2 piece Dust boots Perfect for Street and track Con's 8 pistons Unknown piston sizes - not sure what effect this will have on brake bias Unknown pad size Unknown replacement disc price Won't fit under stock wheels without spacer. STi Brembo's - Used on Subaru Impreza WRX STi: Pro's: Cheap Used by various members of the community - with extensive track use Clear's the majority of 17" wheels Complete kit - Calipers, Pads, Brake lines, brackets, discs 326mm x 30mm disc Various disc options Common pad size Dust boots 4 pistons Con's Shifts brake bias forward massively Steel calipers - heavy Bleed nipples need swapping - i.e. caliper refurb before fitment Not a complete kit Won't fit under stock wheels without spacer. Only available second hand RR Racing (Wilwood😞 Pro's: Cheap Wilwood caliper Complete kit - Calipers, Pads, Brake lines, brackets, discs 326mm x 30mm disc - STi disc's so cheap replacements Clear's the majority of 17" wheels Con's 6 pistons no dust boots Won't fit under stock wheels without spacer. Limited pad selection Only available from the US Moves brake bias forward Essex Parts - AP Racing Sprint Kit: Pro's: AP Caliper - CP8350 4 Pistons Perfect for Track Use Common Pad Size 2 piece discs Extremely light High quality caliper by premium brake manufacturer. Complete kit - Calipers, Pads, Brake lines, brackets, discs Clear's the majority of 17" wheels Keeps stock brake bias Used by various members of the community - with extensive track use Con's: Expensive 299x32mm disc's - Can have some thermal issues Only available from the US Won't fit under stock wheels without spacer. No dust boots Not a daily driver friendly caliper AP Racing Genuine kit: Pro's: AP Caliper - CP6600 (2 piece aluminum body) 4 Pistons Dust Boots Perfect for Street and track Keeps stock brake bias Complete kit - Calipers, Pads, Brake lines, brackets, discs Clear's the majority of 17" wheels - including stock wheels Con's: Very Expensive 26mm thick discs Limited pad options Limited disc options Uses older AP caliper Stoptech ST40: Pro's: Stoptech ST40 caliper 4 Pistons Clear's the majority of 17" wheels Complete kit - Calipers, Pads, Brake lines, brackets, discs 328mm x 28mm disc - 2 piece Dust boots Perfect for Street and track Con's Expensive Can't 100% confirm piston sizes Limited pad replacement options Unknown replacement disc cost Won't fit under stock wheels without spacer. 10 Booboo, KAS, Varelco and 7 others reacted to this Share this post Link to post Share on other sites
Mike 458 Report post Posted April 14, 2019 @will300 perfect post, thank you! Looks like the godspeed kits are out - the AP kit I did think would be overkill and couldn't find anyone else selling the caliper used as a 330mm kit. Too many unknowns with the brembo kit to fork out £1k for! Think it might well be the reyland kit and let Gary worry about the shims I assume 949racing 6uls (17x8 +40?) you ran had plenty of clearance? Share this post Link to post Share on other sites
will300 812 Report post Posted April 14, 2019 Yes plenty of clearance with the 949Racing wheels, see: 1 Mike reacted to this Share this post Link to post Share on other sites
Church 209 Report post Posted April 14, 2019 I wonder which of these all BBKs can be cleared with R16 wheels of winter/rally setup too .. Share this post Link to post Share on other sites
Gregski 5 Report post Posted April 15, 2019 Hi, been reading this as well, nice comparison -thank you all! also found this https://nicoclub.com/archives/nissan-300zx-brake-upgrade-for-frs-brz.html - any opinions? Did anybody tested them and seen them in action? Share this post Link to post Share on other sites
Lauren 2259 Report post Posted April 15, 2019 I think it took about a week or two for my Reyland kit to arrive. Gary fitted mine was well. Share this post Link to post Share on other sites
vanko25 70 Report post Posted April 15, 2019 Just ordered my Reyland kit in red. Most likely I will get Gary to fit it while the car is with RRG for the recall in May. Thanks to @will300 for the comprehensive pros and cons list. That the was the final push to say the Reyland kit is the right one for me. 1 VAD17 reacted to this Share this post Link to post Share on other sites
Varelco 211 Report post Posted April 15, 2019 Lots of good info in this thread, @AJ124 I see in Laurens thread you emailed Godspeed about their kit, did you get a reply with anymore info? Share this post Link to post Share on other sites
VAD17 479 Report post Posted April 15, 2019 Btw - for those interested in KSport caliper and pad sizes.KSport 8-pot caliper for 356mm disks I believe is the same size as AP 6-pot CP5555 (but pls correct me if I am wrong here).Brake pads are CP3894D54 for AP calipers (easier to find this way).ECB Yellowstuffs are under £200 (both fronts and stock rears), Bluestuff is just over £200 (incl delivery). Sent from my SM-G973F using Tapatalk Share this post Link to post Share on other sites