We understand your needs
Weight, bike, terrain, tyres and priorities. A recommendation starts with how you ride, not a catalogue.
Wheels built with purpose.
Built around you.
Race-level performance for your rides. Built and checked for your weight, your bike and your terrain.
Find your build with MILO.
Instant advice and help at every step.
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Hand-built in Spain
Quality Passport included
Crash Replacement for the original purchaser
Response in 24 h
⭐ Recommended by ZAMBRA
The wheels we'd build for ourselves
For each discipline, the build we recommend at ZAMBRA — ready to buy in two clicks, without technical decisions. Want to change something? Customise every detail from there.
Balance geometry
Start a mountain build
Mountain Bike
Our mountain bike reference for a reason: BALANCE geometry distributes work more evenly between drive and disc sides, reading the terrain with composure and responding instantly under power.
Want to customise every detail?
Every component has a purpose
You don't need more options.
You don't need more options.
You need the right combination.
Every component earns its place. When an excellent solution already exists, we select it. When we see room for improvement, we develop our own. That's how MADGOAT BALANCE began.
We select or develop
We select proven components when they fit the brief. We develop our own only when we can deliver a real functional improvement.
We build and document
One person builds the wheelset, applies the Precision Pack included as standard and records the build in the Quality Passport.
The difference goes beyond a decal. It's about the rim, hub, spokes, tensions and tyre pressure working as one system.
Rim technology · nothing left to chance
Not all carbon rims are the same.
Two rims can look alike and ride very differently. Our rims are made to ZAMBRA specifications for each build and use. Geometry, layup, composition, tolerances and usage limits all form part of that brief: we focus on how the complete wheel behaves, beyond weight or depth alone.
MADGOAT BALANCE takes that work further with our own engineering design and geometry developed by ZAMBRA.
See how we select and inspect every rim Specification · construction · interfaces · incoming inspection
01
Every model has a purpose
We specify the rim's geometry, width, depth and configuration around the behaviour we want from the complete wheel. Weight matters, alongside acceleration, cornering support and control over the terrain.
We design the build around how you ride
02
Construction tailored to your riding
Your discipline, weight, tyres and terrain guide the build. We seek the right balance of low weight, stiffness and strength for the demands of your rides and races.
Light where it counts. Strong where it matters.
03
ZAMBRA specification
The rims are made to ZAMBRA specifications for each build and use. MADGOAT BALANCE also features our own geometry, developed to balance the work done by the spokes.
Every detail serves a purpose
04
Every connection counts
Before building, we check how the rim, spokes and nipples fit together. We take care of alignment and tension adjustment so the components work together and the wheel behaves consistently.
Precision in the build
Checks before and during the build
Every rim is identified and checked before we build to it.
We check that the model received matches the current specification, inspect its condition and check the dimensions covered by the approved internal protocol. During the build, we then measure the assembly spoke by spoke.
The measurement that counts is the one recorded. The Quality Passport links the order, components and final measurements without turning tolerances awaiting approval into commercial promises.
- Identification and incoming inspection
- Assembly measurements during the build
- Traceable results in the Quality Passport
The actual process
Checks 01–04Pressurisation · roundness · deviation · approval
01
Model identification and visual inspection
02
Dimensional checks against the current internal specification
03
Build, spoke-by-spoke measurements and Quality Passport record
5
years
of commercial structural warranty, in addition to the statutory warranty
Our own technology · MTB
MADGOAT BALANCE
Our own geometry. A more balanced wheel.
Developed by ZAMBRA to balance spoke tensions and deliver a lively response under power with composure on technical terrain.
The cassette, rotor and hub flanges give each side different starting angles. BALANCE offsets the channel to bring them closer and distribute tension and loads more evenly. Design aim: a distribution very close to 50/50. The actual ratio is measured on every build.
Explore the 5 points on the rim to discover what changes and why it matters on the bike.
View Precision Pack →
disciplineMTB
geometryOur own Balance geometry
targetTwo more balanced sides
Geometry changes how a wheel works
Two sides. A more balanced distribution.
MADGOAT Balance offsets the channel to bring the bracing angles on both sides closer. Design aim: a distribution very close to 50/50.
See how it works Open the comparison to see how each geometry is constructed.
Our own Balance geometry
MADGOAT Balance
Channel optimised to bring the work of both sides closer together
More balanced tensions
The geometry aims to bring the tensions on both sides closer.
A design aimed at improving response and composure while reducing component fatigue.
Conventional geometry
One side tighter than the other
Slightly offset channel
Less balanced spoke tensions
Less balanced spoke tension distribution.
A difference to manage during wheel building to support its behaviour and durability.
Spoke tension balance also depends on the hub geometry.
Technical illustration awaiting a public protocol
MADGOAT Balance geometry
This comparison remains withdrawn from public communication until every figure, tolerance and result is supported by approved evidence.
Technical comparison Comparison withheld pending technical validation
Balance geometry · patent protection process underway
MADGOAT Balance
Offset channel · our own asymmetric geometry
Aim · bring both sides closer in behaviour
Design aim: a distribution very close to 50/50
Offset channel to bring the angles on both sides closer
Spoke exit aligned towards the hub hole
Reinforced lips where the rim takes impacts
State of the art
Conventional rim
Less compensated channel · different angles
The difference between sides can be greater
The drive side and disc side start at different angles
The distribution also depends on the hub and lacing
Less compensation can increase the tension difference
The comparison illustrates geometry, not a universal test
How to read the chart. Both diagrams show the same hub. Only the position of the rim channel changes. This illustration explains how that position affects spoke angles; it is not a universal measurement.
What BALANCE aims to do. Bring the drive side and disc side closer in their structural behaviour through the rim's geometry. Actual results depend on the hub, spokes and lacing pattern. The Extreme version applies the same idea to a reinforced construction for enduro and e-bikes.
A great wheel needs a great build.
The Precision Pack is the process that makes the difference.
Standard wheelDirectional oscillation
ZAMBRA wheelPrecision Pack · more uniform rotation
Standard on mountain, gravel and road wheels
Pack Precision
More uniform rotation. A wheel fine-tuned to the last detail.
Prepared using the actual components of your build.
We balance every wheel accounting for the actual weight of the valve and tubeless system, followed by a final dynamic check before delivery.
- Set up using your build's actual components.
- Dynamic verification before delivery.
- Protective treatment on every nipple against the risk of galvanic corrosion.
- ZAMBRA valves with Schwalbe Clik Valve system and included adapter.
On all our wheels
Included as standard
No extra charge on mountain, gravel or road wheels
Choose my wheels →
The next step for the Presta valve.
A 50% more airflow, less prone to clogging with tubeless sealant, and without the small pin that can bend or break when connecting a pump. These are our ZAMBRA valves with the Schwalbe Clik Valve system.
The pump head clicks into place and disconnects without releasing air from the tyre. Clik Valve adapter for your pump included, so you can use the system and check your pressure with a compatible gauge.
50% more airflowLeak-free click connectionAdapter included
Want to keep using your Presta pump? No problem, although you won't be able to check the pressure correctly with this connection.
Is it worthwhile for your bike?
Tell us your weight and discipline — we'll advise you with no obligation.
Get advice or explore the range →
How we do it
From your build to your bike
Five steps. No shortcuts, no automated builds. Every wheel passes through our hands before it leaves the workshop.
01
Configure
Design your wheels online — rims, spokes, hubs, colours and extras.
02
We advise
We validate your build. If we see room for improvement, we'll tell you before building.
03
We build
Hand-built in our workshop. Tensioning, alignment and checks, spoke by spoke.
04
We balance
With the Precision Pack, each wheel is balanced using the actual weight of its fitted valve.
05
We deliver
Ready to ride. With a Quality Passport and the builder's sign-off.
Included with every ZAMBRA wheelset
Your wheels.Their technical story.
The Quality Passport is your wheels' digital record. It contains the final configuration, fitted components, actual wheelset weight and build checks for the front and rear wheels. It stays linked to your order so you can consult it whenever you need.
01 · BuildThe build and its actual components.
02 · MeasurementLateral and radial deviation of each wheel, in millimetres.
03 · TraceabilityA document linked to your order.
Our care continues after the build.
Your wheels include access to a tyre pressure calculator tailored to your build. It gives you a starting point to adjust for your tyres, weight and terrain.
Open tyre pressure calculator
QUALITY PASSPORT
Your Quality Passport
PANTHERAIL50
REAL EXAMPLE · ANONYMISED DATA
These are your wheels. Here is the record of how we configured, set up and checked them for you.
Checks completeActual setup detailPANTHERAIL 50 · 996 g
Lateral deviation0.13 mm
Radial deviation0.14 mm
Tension variation7 %
Lateral deviation0.12 mm
Radial deviation0.14 mm
Tension variation6 %
In riders' own words
Real conversations
Messages we receive after delivery. Unfiltered and unedited.
A
Álvaro V.
He tried them for the first time yesterday and loved them. A the way they roll is amazing, the hub sound, everything… really pleased, and I've only been out once.
09:57
A
Abraham R.
I think they're spectacular. I've really noticed the lateral support: it makes the bike very stable, with no hesitation at all. It's a work of art. Not 10 out of 10 — 20 😍
12:46
J
Javier V.
Mate, I'm in love with the wheel. The stiffness, comfort and speed are impressive. The stock wheels weren't bad, but these are in a whole different league 🙌
08:55
M
Manuel G.
I rode a descent I know inside out — three Strava segments, and on all three personal best. The cornering is incredible. I'm in love with them 😍
20:16
D
Dani M.
First impression incredible. They feel very stiff and stable, solid through turns and when leaning into corners. They surprised me their stiffness 👌
19:22
J
Javier C.
Very responsive under acceleration. And the changes. Still running the Epic's heavy tyres, but once I fit the Tufos I'll shed 400 g, and that'll make a difference 💯
18:07
A
Antonio G.
But mate, I really notice getting out of the saddle and pushing — the whole bike feels so light, and it rolls incredibly well. My average speeds have gone up haha 🚀
21:58
M
Manuel G.
Today was a proper rocky ride, up and down, and the rear was unbelievable. I came home with PBs everywhere. If the wheels survived today, they can handle anything ❤️
17:58
D
Dani M.
They have surprised by their stiffness compared with my old ones. They feel composed on descents and really good on steep trails with sharp turns. Several people have said how good they look, and what amazing hubs 🤩
19:28
V
Víctor A.
It runs smoother, rolls further, and on descents and rough sections you notice the rim width — and that's on 28 mm tyres. So pleased 👍
08:16
J
Javier I.
Hi Luis, I'm speechless, they're incredible 😎👍 The main thing: so responsive, and the way the hubs roll ❤️
18:50
A
Ander M.
The old ones were good, but these with the carbon spokes and balancing are unbelievable. They accelerate brilliantly and stay composed on fast descents. In training I'm smashing my own PBs 💪
19:14
F
Feliu C.
They're seriously quick. They fly uphill and downhill. My son passed lots of people on the climbs in his race the other day (as he usually does), but I passed lots of people downhill without pedalling. Very happy with the purchase 🚴♂️
17:42
R
Rubén F.
Coming from Reynolds, I thought the difference would be small. It wasn't: the aerodynamics of the 52 mm you feel it above 33 km/h. I've cut 18 seconds off my PB on a climb I know inside out. Wild 🚀
10:34
P
Pablo Á.
For long rides and climbs, the 43 is perfect. They climb so lightly (you barely notice them) and descend with a composure that's hard to describe if you're coming from mid-range wheels. And the hub sound… top, like DT ❤️
07:50
M
Marta G.
I did the Transpirenaica on them — tracks, rocks, tarmac. They haven't moved a millimetre. They feel very comfortable and roll really well. Thank you so much for everything!! 🙏
11:08
I
Iván R.
I use them for gravel, but on the road too when I need to ride to the trails. Incredible versatility — with 50 mm tubeless tyres I fly along just as I do with 35 mm on trails. And the hubs are amazing, they roll so smoothly 🙌
16:21
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How we work
Choosing your wheels starts
Choosing your wheels starts
by talking to us
We don't start with a catalogue. We start by understanding how you ride, what you need and what you want to improve. We then recommend a build and explain why. And if changing wheels isn't worthwhile for you, we'll tell you that too.
Behind ZAMBRA is a specialist team and a build process supported by advanced digital measurement and inspection equipment. Each wheel is built, set up and checked individually for a precise, consistent result ready for demanding use.
Talk to the team on WhatsApp
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Meet the team · 1 min
The ZAMBRA community
Bikes built. Happy riders.
Some of the bikes already riding on ZAMBRA wheels. Just a small selection.
Still have questions?
We don't recommend the same wheels to everyone.
Tell us how you ride. If we think another build would suit you better, we'll tell you.