Deviating from the two big “S” brands of brakes can be a tricky purchasing decision, especially when they’re so commonly found on complete bikes at all price levels, but there are several other companies out there making stellar brakes, such as Formula.
The Italian company has been making bicycle brakes since 1993 and hasn’t been afraid to experiment with performance theories, like their retired R0 brake that featured oval pistons. Most recently, Formula has developed a 4-piston version of their popular Cura series for enduro and downhill riding that stand out from the crowd due to their sculpted looks.
The appropriately named Cura 4 brake system uses four eighteen-millimeter pistons housed in a two-piece caliper. A pair of symmetrical master cylinders can be positioned in either European or moto-style (front brake on the left).
Formula Cura 4 Brakes• Intended use: Enduro & Downhill
• Gloss black, polished, & gold finishes
• Feeling Control System (additional)
• Tool-Free Reach Adjustment (additional)
• 4x18mm pistons per caliper
• 160, 180, 203, 220mm rotors
• Shimano I-Spec B and SRAM MixMaster control mounts
• Mineral fluid system
• 160, 180, 203, 220 (6-bolt & CL options)
• 270g w/o rotor & hardware
• MSRP: €165-206 EUR (exc. vat) / $180-225 USD (exc. rotors and hardware)
•
rideformula.com Moving away from DOT fluid, the Cura is the first brake series that Formula designed to use mineral oil, which is less caustic and does not absorb water.
When it comes to setup, there is a full spectrum of rotor sizes and thicknesses, lever features, and pad options.
Features and SpecsStarting at the master cylinder, there are two lever choices. The basic, cheaper option has a thinner lever blade with only a throw adjustment and requires a tiny 2mm Allen key to change the distance from the handlebar.
The brake set is available with the Feeling Control System (FCS) lever upgrade which changes the progression of the brake. The shape of the lever blade has a larger face where your finger rests and has small cutouts to improve grip. Those also include a Tool Free Reach Adjust (TFRA) dial.
Formula offers four rotor sizes in 6-bolt or Center Lock mounting options; 160, 180, 203, and 220mm. The smaller two rotors measure 1.8mm thick and the larger two are 2.3mm.
As for the pads, there are just organic or sintered options. The size of the Cura 2 and 4 calipers differs, so the pads are specific to each.
There is no differentiation between right and left master cylinders and each brake arrives with a 175cm length nylon-coated kevlar hose.
Price and WeightAll of the parts are sold separately, such as the adaptors, rotors, and bleed kit. The total weight for the master cylinder, caliper, and a full-length hose, including fluid, is 270g.
The brake system costs €165 EUR (exc. vat) / $180 USD with the standard lever in the gloss black colorway, per end, excluding any hardware or rotors. Silver and gold color options cost about a tenner more and the fancy FCS lever adds on another €41 or $45, per brake.
6-bolt options starts at €20 / $22 and move up just a couple shillings per size to €23 / $27 for the 203mm rotor. If you're after the 220mm big dog, that will run €52 / $57. Our 2.35x203mm rotors weighed 238g each. For Center Lock option, you can expect both the price and weight to jump up slightly.
The Cura's bleed ports are threaded with the same pitch as SRAM brakes, so that bleed kit can be used as long as it hasn't been contaminated with DOT fluid. Formula's bleed syringe kit costs €31 / $34 and 250mL of their own mineral oil blend goes for €12 / $13.
InstallationFixing new brakes on a bike might be my least favorite task in the garage. Thankfully, there were no dreadful moments with the Cura 4s. The bleed kit uses quality syringes that thread into the master cylinder and caliper.
The process is as straightforward as most other brakes but less fluid is spilled excessively. Formula has published a
instructional video to follow along with in case you feel overwhelmed cracking open bleed ports.
One detail that was surprisingly absent was an adjustable banjo angle where the hose enters the caliper. This wasn’t an issue on either bike that I ran the brakes on, but I’ve needed to manipulate this at unusual angles on other bikes to accommodate the internal cable routing. If required, a 90-degree banjo is available.
Back up top, I first ran the brake with the standard lever and when I switched the brakes to a secondary bike, I installed the FCS levers. This process takes some patience and steady hands since there are a few extremely small parts. Once installed, though, the TFRA made trail side tweaks a breeze. That FCS also helped to dial in the balance of the bite points and tinker with the actuation leverage.
Bolting the MixMaster clamps on offers a post for the dropper post and shift levers to mount to. The circular arm means that you have to torque the small M4 bolt very tight to keep the controls from rotating under regular actuation. They also lack any lateral adjustment independent of the brake position, unless you swap sides. Luckily, I prefer to run my hands towards the outside of the grips and the MixMasters aligned the controls well when the arms were aimed outward.
PerformanceWhen I first tried the Cura 4s, they arrived on the
Orange 279 last fall with the standard lever, and to be honest, they were underwhelming. That all changed when I swapped out the organic pads for the sintered version. My previous thoughts were flipped by the bite and power that these pads brought.
All of that stopping force didn’t come uncontrollably either like some other brakes on the market with double-jointed levers. The power that the mechanical advantage in the Cura 4 brings is extremely even throughout the lever stroke.
When the pads touch the rotor, there isn’t a sharp jolt as they latch on. From there, increasing the lever force ramps up the power quickly but predictably. What that ultimately does is stop you sooner, as there’s less frantic braking. You spend less time pulling through useless amounts of brake travel which I find leads to less hand fatigue.
That feeling never disappeared when the bike was hurtled down prolonged steep trails. Hints of brake fade occurred in the most extreme cases and where others die a faster death. They did recover quickly when released and remained crispy run after run from there on out.
Switching out the standard lever for the FCS blade comes with more adjustment and comfort. My medium size mitts matched well with both levers, but I preferred the larger surface area on the FCS option.
The additional dials let you tweak the actuation of the brake feedback considerably - they’re much more functional than the screws on other brands of brakes. In the least progressive setting, the lever can feel a touch sluggish or firm to pull. On the other hand, when the dial is turned all the way toward the positive direction, the lever can have a shade of vagueness to it. Primarily, I stayed in the linear direction for more direct actuation.
DurabilityI’ve been running these brakes for the better part of six months and used them on both a downhill and enduro bike. They’ve seen plenty of wet weather, dry dust with zero squeals, leaks, or concerns. In that time, they did require a quick bleed as the pads neared their lifespan, which isn’t unconventional practice.
One of the top selling points for me was that the Cura 4 pistons never dragged once. Trying to set up a brake that has very little free stroke in the lever and doesn’t drag is tricky to keep consistent, unless you’re constantly fiddling with alignment, pad wear, and piston positioning.
How do they compare?Price aside, you want to know what they feel like and that’s challenging to put into words because they don’t feel like any other brake out there. They’re a world away from the actuation of Shimano Saints with a longer lever and more abrupt, but predictable engagement point.
In terms of the lever pivot positioning, they’re somewhere between a SRAM Code RSC and TRP DH-Evo. The leverage is much more similar to Code, although the power per millimeter of pull comes on quicker than the SRAM set of brakes.
Would I take them over my beloved Magura MT7s? I still prefer the fast-acting and effortless power of the German brake but appreciate how the Cura 4 pads didn't constantly rub.
And how about Code RSCs? I'd take the Cura 4s due to the power that they deliver early on in the stroke and ability to stave off fade. You get more power for less pull.
Pros
+ Predictable modulation.
+ Power turns on quickly and evenly.
+ Pistons continue to run friction free.
Cons
- Not the lowest actuation leverage.
- MixMaker posts are not the most refined.
- Caliper banjo angle is not adjustable (additional parts required).
Pinkbike's Take | Gravity-based riding and racing demands power and reliability from your brakes. The Formula Cura 4s might not be the first brake to come to mind, but their performance outshines the usual suspects.
Their lever shape and actuation is unique, however, there's no lack of tuning when upgraded to the "Feeling Control System" lever. They produce predictable power early on in the lever stroke which means you slow down earlier using less strength - a win win.
— Matt Beer |
In what world does it make sense to make your size options 160mm, 180mm, 8in, 220mm?
That's all to say that as long as you're within ~1mm and your rotor isn't rubbing on the caliper, you'll never know the difference.
Let's leave the legacy "standards" alone unless they're really obsolete. Marketing isn't a good enough reason to knock 1.5mm off the radius of a rotor! It's effectively the same size, but just enough different to create pad overhang if you try to use your old adapters.
Me, I'm still using 203mm rotors because that's what came on the ancient used bike I bought in 2019. Since then I've changed the frame and fork, brake system twice, and rotors themselves three times. Never all at the same time; so the size remains.
Why go for a standard from brakes which are really not good?
I would like to see direct post mount in 203mm on frames and forks. No washers would be needed and to the brakes that fall away you really do not have to grieve. (Besides, you could still drive Sram brakes, just with different brake discs).
I'm running 223/203 because why wouldn't I want the biggest rotor I can get?
It would require the industry agreeing on what they'll all offer in 10 years and then slowly phasing out the obsolete standards. Definitely a bit of a dream, but you never know...
There are plenty of other "standards" that should be tossed (like at least 2 seatpost diameters, a bar clamp diameter, a handful of BB standards, a rotor mounting standard, some axle standards, etc.), but it seems the industry is heading towards less standardization rather than more.
Just my thoughts.
That being said, I've heard only great things about the dominions, so I'd assume they provide the same level of performance !
Anyone have any ties to Formula or have an knowledge of how to/ where to get rebuild stuff for Formula the Ones?
I have two sets of the Greg Minnaar editions and would love to get them properly functioning again. Thanks!
If they haven't got what you need drop us an email and we'll see what we can find here at the factory. We'll always try and keep a good set of brakes going.
service@rideformula.com
Oh, and just so you know the factory is closed over August for vacation, so apologies in advance if you don't get a reply straight away!
I need to move to Italy it seems.
Appreciate that as well, hopefully they can help get them taken care of but will keep in the loop. Thank you for the help!!
Way pumped to keep these going as they’ve always truly been my favorites so big time thanks!!!
I loved the gold color and the modulation and setup were good, I just felt like I was having to pull too hard on the levers to get enough power instead of feeling like I still had power in reserve.
In fairness I didn't really give them much of a chance in terms of trying different pads and discs to try and "get" them to work for me, but at the same time, should I have too?
Just my 2c
Isn't Moto style front brake on the right?
Formula has developed the Cura 2 as a Downhill brake. And they did deliver.
www.rideformula.com/stories/burn-like-the-sun-cura-brakes-at-the-top-of-the-dh-overall-2017
www.rideformula.com/stories/finn-iles-reaches-the-top-step-of-the-podium-in-lourdes-with-cura-brakes
But the market wanted some 4 pod brakes, so Formula developed the Cura 4 for all them.
I run the Cura 2 and I am very happy. Never had any trouble getting stopped.
Love my C-2 though.
This is not necessarily a good thing. Even quite wet (~4%) DOT5.1 fluid is still going to have a boiling point quite a bit higher than what you're going to see in an MTB brake, at around 180C, and quite comparable to typical bike mineral oil (Shimano's MSDS states "expected >200C"). Meanwhile the mineral oil is going to leave any moisture in the system sitting by itself, falling down the the lowest point, the caliper, where it can get nice and hot and will boil at a good ol' 100C.
+ Baseline dyno tested
+ Used for a full season (1 year) with fluid top-offs (similar to Shimano "lever bleed")
+ Dyno tested
+ Fully bled
+ Dyno tested
There are some publications with really solid, data-backed findings that show stopping distances, fade, etc.
I guess bicycles are light enough duty that they can „get away with“ hydraulic oil in brakes.
What do you mean "double-jointed"? Like ServoWave or SwingLink? Well, yeah because this one does not use a variable ratio through the stroke. The FCS moves the pivot point, but it's static outside the adjustment. It's apples to oranges: some riders like the changing motion ratios (pad moves faster early in the lever stroke), some don't. Doesn't make this better or worse, just different, but you went ahead and literally said the "double-jointed" ones come on way too fast for anyone to control, which is just ridiculous.
Would highly recommend.
Awesome addition, IMO - I did worry it might not be 100% reliable.. but no issues after a year and 2 different frames!
Because of the brake hose port location in the chainstay on my bike, the ideal angle for the caliper hose to exit the caliper is nearly 90° from where this one points.
Seems that the majority of bikes are at least 45°.
Definitely something that can be improved…
Funny you didn't love them with organics, they're actually the first brakes where I like them. I did go aftermarket (can't remember who, somebody cheap), though.
Word of warning, Formula says to leave the caliper syringe attached and just clamp it while finishing the lever bleed. It was very easy to cause mineral to leak around the o-ring at the caliper, spraying mineral oil everywhere. Hence the cheap aftermarket pads. Now I just remove the caliper syringe before putting any real pressure at the lever.
cambriabike.com/products/formula-monolithic-6-bolt-rotor
Technically you actually have to pull through more "useless travel", since compared to a lever with dynamic motion ratios, the master piston will move less for a given lever displacement at the beginning of the stroke. Not saying your feeling of less fatigue is wrong, but the reasoning might be.
Especially considering those big caliper pistons are going to require more oil displacement from the master piston to achieve the same pad displacement. The less fatigue is more likely coming from the reduced lever pressure needed to apply the same (or greater) caliper piston force, not less motion at the lever.
How does lever throw compare to stock Codes?
One thing long term to keep an eye on is the banjo/o-ring at the caliper - if you don't replace the banjo with the calipers. So far no leaks or any issues, no idea if there will be but something I'm keeping an eye on. If anything does happen to the o-ring then I'll either get banjos specifically for Dominions or just get a bigger o-ring, figure that out when/if there's a problem.
Hey @rideformula , we need updates on the dual crown Selva!
So, in summary, good things come to those who wait.
Well played, @rideformula, well played.
Source. I get to play with a lot of bikes
Front was perfect since the beginning (constant and powerful) with galfer green.
Rear : same leak on 2 different hoses at the level of the metal end. Pistons goes sticky in the time and don't go back well. Same after cleaning). Finally change the rear only with an XT...
I don't like changing brakes as it kinda rules everything what you do with the bike and becomes such a imbedded part of your riding style. Currently on G2/Juicy 7 levers and Code calipers.
Would really like to try them for a year or so, not so sure about breaking the piggybank atm.
Nope, the 85ish whatever currency is for one lever, not a set of two !
Anyway, I'll give this combo a try
They've been absolutely great. In the beginning I had some rubbing issues but that was because the Magura rotors I paired them with were not quite straight. The pad clearance isn't much but once I had straightened out the rotors they were very consistent.
These brakes have really improved my riding compared to the Shimanos, I can brake later and still keep traction due to more precise control over the amount of power I apply.
After reading this review, I am considering the lever upgrade depending on the price. I see online offers for >80 euros per lever. Seeing that I paid 169 for the entire set of 2 brakes including rotors, that's a bit much to upgrade a perfectly working brake.
www.gambacicli.com/en/formula-cura-2-black-disk-brakes-front-rear.html
www.bike24.com/p2223888.html
Check out bike24, Gambacicli, LordGun and other euro online shops for the best prices. You can also get parts in the US from Universal Cycles, Cambria bike, and a few others. However, I've found all the euro stores are noticeably cheaper.
The forums say people have run Shimano mineral oil in the no problem, however I haven't tried that yet.
Too bad our local importer is slow in getting the new lever upgrade in stock !!
On a bike I bought and they are really good. Super powerful with 220mm rotors front and rear. Only complaint is it’s hard to manual, the rears so powerful.
My bigggest issue with this brake is their lack of modulation. About on par with my 2 piston Shimano XT's. Granted I haven't tried out their more adjustable lever set, altough I couldn't even if I wanted to as they aren't available anywhere.
Secondly the free stroke on these brakes is huge. I could pull my levers 2/3 to the bar with brand new pads (which were really finicky to set up rub-free btw).
The lever pull is also pretty heavy. I don't notice it on the trail but it takes a bit more force to move the levers compared to Shimano/Sram/Magura brakes I've tried.
One thing they do get right is the power. It has a stupid amount of power, but that is useless without good modulation imo.
I switched to Sram Code RSC's a couple of months ago and couldn't be happier with them.
The modulation is unexisting and the free stroke is massive (the biggest I ever felt). Even though I correctly bled the rear it felt the exact same as the front out of the box, both on Formula discs.
The shortest free stroke I found was on the 1st gen Trickstuff Direttissma, half of the Code RSC in my reference at the shortest free stroke adjustment.
And you need to move that caliper all around to get the air out.
Hayes - I've felt the Dominion and that is way too much for me.
Trickstuff
Magura MT7 and up
Shi-gura's (Shimano (Zee - Saint) levers / Magura Calipers)
SRAM SRC's properly bled.
Braking Inca 2.0 / BCA BCARS01
Many brakes you can bleed to actuate faster, you just need to work with oversized width of discs or know how to overload the system, bringing the pistons out further than the usual.
my brakes dont grab until the lever is parallel with the bars, i can still get full lockup before they touch, the TRP's are very linear, its like they know exactly what I want. I've had way less crashes and kept better speed since the upgrade.
I can never go back, TRP'in for good.
And nah no way shimano brakes are bad, I'd run them. Sram levels and guides can burn in hell tho.