If you ride a mountain bike in South Africa, your wheels are doing more work than almost any other component on the bike. They absorb trail chatter on the Jonkershoek singletracks, take the landings at Cascades, and carry your full weight through every loose corner on the Karoo gravel. And in most cases, they came with the bike — specified by a manufacturer who had never met you, didn’t know your weight, and was working to a price point.

This guide covers everything you need to know about upgrading to custom hand-built MTB wheels: why it matters, how to spec correctly for your riding, what things cost, and what the process looks like from first conversation to first ride.

It’s written from over a decade and more than 1,000 wheel builds. Not theory. Actual experience.

Most riders assume their wheels are fine because they came with the bike. If the brand on the hub matches the brand on the frame, they must have been designed to work together. That’s a reasonable assumption. It’s also wrong.

Bike manufacturers specify wheels the same way they specify every component on a complete build: to a margin. Wheels are where the budget gets squeezed hardest, because most buyers don’t notice mediocre wheels on a 20-minute test ride. You notice them on every ride for the next five years.

What that typically means in practice: plain-gauge spokes where double-butted spokes should have been used, causing premature breakage under load. Spoke tension set unevenly by machine, meaning the wheel was already stressed before you rode it. Nipples seized onto spokes within a year, making it impossible to true the wheel when it needs it. And sometimes — on bikes that look premium — quality hubs and rims assembled with cheap spokes and nipples, causing rims to crack prematurely because the build hardware couldn’t handle the load.

The wheel spec on a R100,000 mountain bike is often worth R5,000–R8,000 at manufacturer cost. That’s not a guess. It’s what the margins require.

A custom hand-built wheelset changes all of this. Components chosen for your weight and riding style. Spokes tensioned correctly and evenly. A builder who will answer for the work with a lifetime warranty.

→ Read: riding crappy wheels just isn’t right
→ Read: what building 1,000 wheels has taught me

This is the question most riders arrive with. The honest answer is: it depends on your riding, your weight, your terrain, and your budget. Here’s how to think through it.

The primary benefit is weight at the rim — which, as explained later in this guide, is where weight savings are most felt. A quality carbon MTB rim will typically weigh 350–500g less than a comparable alloy rim. On a wheelset, that’s 700g–1,000g of rotating mass reduction. Riders consistently describe this as transformative — not a marginal gain, but a different bike.

Carbon rims are also stiffer laterally, which translates to sharper, more precise handling. On fast, technical singletrack this is felt in every corner.

The tradeoff is cost and, historically, durability concerns. Modern carbon rims from quality manufacturers — including Nextie, which Wheelbuilder distributes exclusively in South Africa — have addressed the durability question convincingly. The layup technology has matured. Rim strikes that would have cracked older carbon rims are now handled without issue by current-generation product.

Carbon makes most sense for: XC and marathon riders prioritising weight and efficiency, trail riders who want the handling benefit, and anyone willing to invest in a wheelset they’ll ride for the next decade.

A well-specified alloy build is not a compromise. It’s often the smarter choice for riders who prioritise value, ride heavy enduro or downhill terrain, or are upgrading from particularly poor stock wheels where the performance gap is enormous regardless of material.

Quality alloy rims – Stan’s, Spank, WTB, Raceface – are tough, repairable, and when built correctly with quality spokes and hubs, will outlast several frames. For heavier riders (90kg+), an alloy build with appropriate spoke count can actually be the more durable long-term choice depending on terrain.

Alloy makes most sense for: enduro and DH riders, heavier riders on technical terrain, budget-conscious upgrades where the full performance benefit of carbon isn’t required, and e-MTB applications where rim strength is prioritised.

→ Read: are carbon rims for mountain bikes worth the splurge?

→ Read: lightweight XC carbon MTB wheel shootout

→ Read: world’s lightest MTB wheels, compared

Rim width has changed more dramatically than almost any other wheel specification over the past decade. In 2015, a 25mm internal width MTB rim was considered wide. Today, 30–35mm internal is standard for trail riding, with 35–40mm becoming common for enduro applications.

The shift happened for good reason. Wider rims support the tyre casing better, allowing lower pressures without the risk of burping or folding. Lower pressures mean more traction, more comfort, and better impact absorption. The tyre profile also becomes rounder and more predictable under cornering loads.

How to match rim width to tyre and discipline

For XC and marathon riding with tyres in the 2.2–2.4″ range, a 28–32mm internal width is the sweet spot. Wide enough for tubeless efficiency and tyre support, not so wide that the tyre profile becomes too square for fast rolling.

For trail riding with 2.35–2.6″ tyres, 30–35mm internal is ideal. This is the most versatile range for South African trail conditions — enough width for traction and comfort on variable surfaces without compromising efficiency on the climbs.

For enduro and aggressive trail with 2.5–2.6″+ tyres, 35–38mm internal gives maximum tyre support for high-speed descending and big impacts. Wheel weight increases, but so does confidence at speed.

Going too wide for your tyre size is as problematic as going too narrow. An excessively wide rim with a narrow tyre creates a square profile that corners unpredictably. When speccing a custom build, rim width and tyre size are always considered together.

→ Read: Rims – how wide is too wide?

→ Read: How to choose new mountain bike rims

Hubs are where riders most commonly overspend in the wrong direction — chasing engagement points and brand names when bearing quality and build durability matter more.

What actually matters in a hub

Bearing quality is the longest-lasting decision in a wheel build. A hub with quality sealed cartridge bearings, properly preloaded, will spin freely and stay that way for years with basic maintenance. A hub with cheap bearings will develop play, create drag, and eventually transfer load stress to the axle and dropout. This is not recoverable without replacing the hub — which means rebuilding the wheel.

Flange diameter and spoke hole drilling affect the spoke geometry of the build, which in turn affects wheel stiffness and load distribution. A builder specifying a hub isn’t just looking at the hub in isolation — they’re looking at how it interacts with the rim and spoke count to create the right overall structure.

The hub engagement question

High engagement hubs – 72-point, 120-point and beyond – have become a marketing battleground. More engagement sounds better. For most riders, it isn’t.

Ultra-high engagement is achieved through very small drive ring teeth. Smaller teeth wear faster under hard pedalling loads. The more engagement points, the more quickly those teeth round off and the freehub becomes imprecise. You’ve paid a premium for a component that degrades faster than a hub with fewer, larger, more robust teeth.

High engagement genuinely matters for trials riding and extremely technical terrain where a half-pedal stroke needs to connect immediately. For trail riding, marathon racing, and general MTB use, 36–54 points of engagement is entirely sufficient and far more durable.

Brands worth knowing

Hope, DT Swiss, Industry Nine, OneUp, Cure, ED-GE and Nextie are the hubs most commonly specified in Wheelbuilder builds. Each has a different character.

Hope is British-made, rebuildable to an extraordinary degree, and virtually indestructible with basic care.
DT Swiss offers exceptional consistency and a wide range across price points, but may be more difficult to source in SA.
Industry Nine’s Hydra and 1of1 hubs are genuinely worth the premium.
Endō and Nextie offer exceptional value for impeccable quality.

→ Read: hubs — the heart of your wheels

→ Read: hubs — what you need to know

Spokes are the most underappreciated part of a wheel build. They’re also where factory wheels cut corners most aggressively, and where a quality build makes the most structural difference.

Spoke count

The right spoke count depends on rider weight, discipline, and rim design. There is no universal answer — which is exactly why factory wheels, built to a formula, often get this wrong.

A 70kg XC rider on carbon rims can run 28 spokes without issue. A 95kg enduro rider on the same rims needs 32. A heavy rider on an e-MTB might need 36. The structure of the wheel — how load distributes across the spoke bed — changes fundamentally with rider weight, and a spoke count that’s marginal for a lighter rider becomes a failure point for a heavier one.

Spoke type: double-butted vs plain gauge

Double-butted spokes are thicker at the ends (where stress concentrates at the elbow and nipple) and thinner in the middle section. This thinning isn’t weakness — it’s engineering. The thinner middle section acts like a spring, absorbing road and trail vibration and reducing fatigue at the stress points. Double-butted spokes last significantly longer than plain-gauge spokes and result in a more comfortable, more durable wheel.

Factory wheels almost universally use plain-gauge spokes. It’s cheaper. It’s also one of the reasons stock wheels fail prematurely.

Lacing patterns

Most MTB wheels are laced in a 3-cross pattern — each spoke crosses three others between hub and rim. This is the standard for good reason: it distributes load well, is resistant to torsional stress, and works for the vast majority of riding. Radial lacing (spokes running straight from hub to rim, no crossings) is occasionally used on front wheels for weight savings but offers less torsional resistance and is not appropriate for disc brake applications. 2-cross lacing is sometimes used on lighter XC builds.

The lacing pattern is chosen based on the full picture — rider weight, discipline, hub flange geometry, and intended use — not aesthetics.

→ Read: spoke lacing patterns

→ Read: big boys need strong wheels

XC and marathon

Priority: low weight, rolling efficiency, reliability over long distances.

Typical spec: carbon rim, 28–30mm internal width, 28–32 spokes, quality mid-range hub (DT Swiss 350, Hope Pro 5), double-butted spokes, brass nipples. Tubeless-ready setup.

Weight target: sub-1,400g for the pair on a quality build. Sub-1,200g achievable with premium components.

→ Read: what are the best wheels for MTB marathons and stage races? → Read: lightweight XC carbon MTB wheel shootout

Trail

Priority: balance of weight, durability, and handling precision.

Typical spec: carbon or quality alloy rim, 30–35mm internal width, 28–32 spokes, Hope Pro 5 or equivalent, double-butted spokes, brass nipples. Tubeless essential.

This is the most common build type — the all-rounder that suits the majority of South African trail riding conditions.

Enduro and downhill

Priority: strength, impact resistance, reliability under maximum load.

Typical spec: reinforced alloy or enduro-rated carbon rim, 35–40mm internal width, 32 spokes minimum, beefy hub (Hope Pro 5, I9 Hydra), double-butted or straight-gauge spokes depending on rider weight, brass nipples.

→ Read: MTB wheels where heavy duty is required

e-MTB

Priority: strength above all else. E-bikes are heavier, faster, and harder on wheels than acoustic bikes. The motor torque loads the rear wheel under acceleration in a way that no acoustic MTB replicates.

Typical spec: strong alloy or enduro-rated carbon rim, 32–36 spokes, reinforced hub with robust freehub body, double-butted or straight-gauge spokes, brass nipples. Spoke count is non-negotiable — this is not the build to try save weight on.

→ Read: buyer’s guide — hand-built e-bike wheels → Read: e-bike wheels break — rim upgrades explained

Budget builds

A custom hand-built wheel doesn’t have to be an expensive wheel. A quality alloy rim with a solid mid-range hub and properly tensioned double-butted spokes will outperform any stock wheel at a similar price point, because the build quality and component matching is done correctly.

→ Read: hand-built MTB wheels on a budget

Custom hand-built MTB wheels in South Africa range from approximately R10,000 for a quality alloy build to R30,000+ for a premium carbon build with top-tier hubs. The variables are rim material, hub choice, and spoke specification.

That range sounds wide. It makes more sense when you consider what you’re comparing it to.

A new mountain bike that is meaningfully better than what you currently ride will cost R70,000–R120,000 at minimum — and it will come with stock wheels worth R5,000–R8,000 at manufacturer cost. You’re paying for a new frame, new suspension, new drivetrain, and wheels that are specified last with what’s left in the budget.

Or: spend R15,000–R25,000 on a custom wheelset. Keep the bike you love, the fit you’ve dialled in, the suspension you know. Get wheels that are built specifically for you, with components equivalent to what comes stock on bikes at R150,000 and above. Spread over ten years of riding, that’s R1,500–R2,500 a year.

Every Wheelbuilder build comes with a lifetime warranty on workmanship and all spokes and nipples. Not a 12-month warranty. Not a limited warranty. Lifetime.

→ Read: why spending 75% of your bike’s value on wheels isn’t over-capitalizing

→ Read: the cost vs value of custom wheels

Every build starts with a conversation. Not a spec sheet, not a dropdown menu — a conversation about your weight, your riding, your terrain, and what you’re trying to achieve.

From there, components are specified and a quote provided. Lead time is typically 1–6 weeks depending on component availability. Every wheel is hand-built one at a time, tensioned correctly, and checked before it leaves the workshop.

Wheelbuilder is based in the Garden Route and ships nationwide. Clients from Johannesburg, Cape Town, Pretoria, and Durban regularly send wheels down for repairs and rebuilds, and commission new builds remotely.

→ Read more about the process

If you’ve read this far, you have a better understanding of MTB wheel specification than most riders who’ve been riding for decades. The next step is a conversation about your specific situation.

No obligation. No pressure. Just a straight-talking discussion about what the right wheelset would do for your riding.

Request a quote →