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Why a Custom Bike is Worth Every Cent

Posted: 1 March 2025 Inside the Workshop

Close-up of the bicycle tattoo on a bike rider's thigh. They are wearing black lycra and riding a drop-bar bike.

STOCK BIKE VERSUS CUSTOM BIKE: 4 REASONS TO BUY CUSTOM EVERY TIME

Have you ever felt like your bike just doesn’t quite fit you? Maybe you like a particular frame design but not the overall build spec. Or perhaps you’re just tired of seeing the same mass-produced frames in every group ride you do, and you want something different, something that suits your personality or makes a statement.

A custom bicycle is the answer.

While some riders assume custom bikes are an indulgence, a specially created bicycle provides long-term value that an off-the-shelf bike can’t match. It can also be more affordable than you think.

We love putting custom builds together, so let’s look at the benefits of getting a custom-made bike, and why getting one could be the best decision you ever make.

A young man leaping into the air for joy, punching one arm above his head.

IMPORTANT NOTE! When we talk about custom bikes/custom builds, we mean an individual build done on a factory-produced frame, not a custom-made frame.

Some people do need custom-made frames if they have very specific geometry requirements, but most people simply don’t need it if the person in charge of selecting each component knows what they’re doing.

A professional bicycle mechanic working at Bio-Mechanics Cycles & Repairs.
Like this guy.

REASON 1: A custom bike is designed to fit you, not someone else.

Mass-market brand bikes are designed for an average body shape. This is done, of course, to maximise the number of potential buyers for those designs.

The problem is that many riders aren’t average. Two people can be the same height but have completely different arm or leg lengths. Some of us have long torsos (ask Lia how she knows), while others have shoulders which sit at different heights.

And we’re not even taking into consideration the ramifications from back problems or mobility issues.

A bearded man showing a young woman a model of a spine, gesturing to the mid-section. She is seated in front of him, looking at the spine.
"Your spine is like... how you say... the play-dough."

Moreover, what a mainstream brand thinks are “average” fit dimensions may not suit someone who needs a more aggressive position for racing, or, conversely, a rider looking for a more relaxed feel. This particular issue is also only becoming more pronounced with the proliferation of integrated handlebar/stem/headset systems, which are inherently inflexible outside very set parameters.

Not everyone has a perfectly proportioned body, either. In the many years we did bike fits, we would usually discover imbalances and/or asymmetry issues with that rider. For example, it was surprisingly rare to find someone who had legs which were exactly the same length. (For the vast majority who didn't, finding out was also a surprise.)

Asymmetry aside, many riders find that off-the-shelf bikes just don’t feel quite right.

A man leans against a mountain bike, looking at a beautiful sunset over the mountains in the distance.
A man coming to terms with previously undiscovered leg length differences.

For riders who are on the shorter or taller side, finding a ready-made bike that fits properly can add an extra layer of difficulty. Tall riders can feel cramped, or end up with super-long head stems to try and put their hands in the right position. Shorter riders have an extra challenge in that small bikes often handle terribly because, for mass-market brands, they’re usually an afterthought.

(This is why we once designed a frame with custom geometry so it wouldn’t handle like a bastard and would actually corner properly.)

Not only is an ill-fitting bike uncomfortable to ride, it’s also a quick way to get injured, or to aggravate pre-existing conditions such as knee pain, ITB issues, back and neck issues, and wrist problems.

An old man on a beach, bending over and holding his back, grimacing in pain.
"Curse you, off-the-shelf bike!"

In contrast to a stock bike, a custom bike is built to fit you exactly.

It takes your specific proportions into consideration to ensure that you’ll be in the most comfortable and efficient position, whether you’re going to be crushing your race competition, riding around the world, or just rolling through the hills on the weekend.

A custom build also considers things such as injury history, joint reconstructions or previous broken bones, and your level of flexibility. (Not everyone can stay in the drops for an hour.)

Not only will the resulting bike be more comfortable, but it will also be easier to ride.

And you won’t feel like the by-product of 1000 other people’s data.

A professional bicycle mechanic measuring the saddle height on a bike at Bio-Mechanics Cycles & Repairs.

REASON 2: You want something different

Large brands tend to follow industry trends, whether that’s frame shape or paint schemes. Sometimes the workshop is a sea of sparkle metallics, other times everyone’s decided that dark neutrals are the only acceptable option. (And don’t get us started on integrated cockpits.)

However, as any party you’ve ever been to will tell you, not everybody has the same taste.

A young woman stands next to a colour-wrapped bicycle, at a boba tea outdoor stall. A man behind her is ordering from the stall.
Presented without comment.

With a custom build, you have full control over the bike’s aesthetics.

Want a classic steel frame with retro touches? A sleek, understated build with hidden details? A gold-touched MTB? A Goth-inspired silver-on-black masterpiece?

It’s all your choice.

A marble-patterned gold and green Bossi bicycle fork, created at Bio-Mechanics Cycles & Repairs.
Try finding this fork on an off-the-shelf build.

Conversely, you may love a particular brand’s frame but not like any of their complete bike options.

If you’ve got a frame, though, you’ve got the beginning of a custom build.

An aqua Bianchi mountain bike, custom-built by Bio-Mechanics Cycles & Repairs. It's photographed in a car park against a colourful graffitied backdrop.
Exhibit A.

There’s a certain brand we deal with where if it's a choice between a complete bike or a custom build, we always recommend the custom build option. While we love the frames, this brand's component choices aren’t up to the quality we’d like (especially since COVID wreaked havoc on the industry) so the value isn’t as good as full custom build.

Interestingly, the custom builds often end up about the same price than the complete bike, but you get a far better bike for your money.

A Surly Midnight Special bicycle, custom-built by Bio-Mechanics Cycles & Repairs. It's photographed in a car park against a colourful graffitied backdrop.

The advantage of a custom bike over an off-the-shelf bike is especially important when it comes to avoiding the trap of proprietary systems.

Having your bike custom-built can avoid locking you into particular component configurations, which can come with nasty surprises (e.g. only being able to a certain headstem, or discovering that you can’t swap to a different model of suspension due to the frame design).

It also means that you can side-step being restricted to only using brand-specific components such as headstems and seat posts, thus avoiding a lot of headaches down the track.

A turquoise and red Open UP bicycle, custom-built by Bio-Mechanics Cycles & Repairs. It's photographed in a car park against a colourful graffitied backdrop.
No proprietary whatchamiggits here!

Your desire for something different might even be driven by a more specific purpose.

Some riders have unusual or very particular requirements of their new bike, such as needing something that can handle Everesting efforts, or even just wanting a build that’s designed to not attract attention.

Frame detail on a black All-City Big Block bicycle, custom-built by Bio-Mechanics Cycles & Repairs, photographed in a rose garden. The frame decal says 'Bike Bandit'.
Or maybe you just want custom decals.

Whether it’s because the bike options aren’t quite right, you don’t want a mainstream brand, or you just don’t want to turn up to your group ride on the same bike as ten other people, a custom build means you get what you want, looking exactly the way you want it.

A bearded young man in cycling clothing, stopped by the side of a dirt road, standing over a road bicycle while holding a drink bottle. He's looking off into the distance at something we can't see.
"Wait, is this actually my bike?"

REASON 3: It’s better than modifying a stock bike.

Adding personal touches to an off-the-shelf bike is often par for the course.

Want a different bar tape or top cap? That’s easy.

Where it starts to get complicated, however, is when you want to change something significant, such as the groupset, wheels or handlebar setup. These areas are instantly complicated even further if you’re dealing with integrated designs.

A version of the distracted boyfriend meme, but about bike mechanics and integrated cockpits.

But why would you want to modify stuff in the first place?

Usually to upgrade it.

Mass-market brands spec their bikes to hit particular price points. To meet those price points, they save costs by cutting corners on different areas: components, wheels, frame material, etc. It’s not uncommon to see a basic wheelset on an otherwise pricey bike, or a groupset that doesn’t match the high-level rear derailleur.

A woman wrapped in a blanket, standing on the deck of a timber house and crying. She's holding a mug.
"Why did my $20,000 bike come with $50 rims?"

Industry secret time! If you see a bike with a combination of different level components, the rear derailleur is always the highest-specced gear component.

Why?

Because large bike companies know that this is usually the first thing people look at when assessing a groupset.

Chuck a Dura-Ace rear derailleur on a 105 groupset and most people won’t notice the 105 parts, as they don’t tend to look at the levers, calipers or front derailleur.

Checking the rear derailleur is one of the three main things people do to a bike that’s for sale; the other two are tapping the top tube with a fingernail and squeezing the tyres. None of these things will tell you much about the bike itself, yet 99% of people do at least one, if not all three.

But we digress.

A titanium Bossi Grit gravel bicycle, custom-built by Bio-Mechanics Cycles & Repairs, photographed in a park.

Once you’re changing major components, not only does upgrading a stock bike quickly become expensive, but you also need to find a shop who’s willing to modify one of their bikes for you.

As the customer who’s giving them your hard-earned cash, you might think it shouldn’t be a problem. However, depending on what you’re asking, the costs to the bike shop may outweigh the final selling price, so you might be surprised how reluctant people can be to start pulling bits off and putting other bits on.

With a custom-built bike, however, you don’t have to try to persuade a bike shop to modify something. You also don’t have to upgrade sub-par components, and you don’t have the hassle of trying to source and fit additional parts yourself, either.

You get exactly what you want, in the combination you want it, the first time.

A Surly Karate Monkey, custom-built by Bio-Mechanics Cycles & Repairs, photographed on a rainy day in a park.

REASON 4: It’s a better long-term investment.

Rather than a bike that’s just being pulled out of a box and put on the floor (whether it’s been assembled properly or not), every single component on a custom bike has been sourced and fitted by hand.

We also always ensure that the frame has been machined and properly finished so the bike won’t click and creak when you ride it. This means you won’t waste time taking it back into the shop to get various tweaks or noises checked out – you can be out enjoying yourself on it instead of battling traffic.

A titanium Bossi Summit endurance bicycle, custom-built by Bio-Mechanics Cycles & Repairs and photographed in an alleyway.
Or just showing it off at cafes. We won't judge, especially when it's this pretty.

In addition, you won’t have the additional costs of getting components upgraded or switched out. There will be no need to go to a different saddle or better brakes, for example – your custom bike has already been designed to suit your needs and riding style, from the rims, tyres and spokes through to the pedals and bar tape.

Because your bike has been built specially to fit your dimensions, there's also no need to get adjustments made to the setup. You’ll be happy and comfortable on it from the moment you roll it out of the shop, and can look forward to years of trouble-free riding.

A Surly Steamroller bicycle, custom-built by Bio-Mechanics Cycles & Repairs, shot on a sunny day in a graveyard.
You only want one gear? Not a problem.

Another important note here is the part you played in this new bike. It’s genuinely something of your own – you’ve helped create it, which makes it even more special than just picking something off the shop floor. This sense of unique ownership is also why it’s so rare for someone to sell a custom build; out of the many, many bikes we’ve built for people, 99% of them are still with the original owner.

While the upfront cost of a custom bike can be higher (though it’s not always), it tends to pay off in the long run in terms of durability, comfort, performance and overall riding pleasure.

A Bossi bicycle fork custom-painted in Gulf Racing Stream colours, on a custom build made by Bio-Mechanics Cycles & Repairs.

OK, I want a custom bike! But I don't know where to start...

Bike shops don’t expect you to walk in with a detailed spec list in hand.

Most riders start with a dream, an idea, or even just a ‘I’m sick of my roadie’ jump-off point.

As you've seen, a custom bike isn’t just about aesthetics—it’s about getting a ride that’s built for you in every way. With a custom build, you get perfect fit, tailored performance, durability, and personalisation, ensuring your bike meets your needs and riding style without compromise.

Talking through your ideas and plans will result in a bike that’s tailored exactly to meet your dreams, rather than something you’re not going to enjoy.

So take the plunge.

You’ll never regret it.

Three women wearing black and standing against a gold streamer curtain. The middle woman holds a cake with a bicycle-shaped candle on it, while the other two hold sparklers.
"Happy You-Bought-A-Custom-Bike Day!"

Got something in mind? Need some inspiration? Check out our custom builds gallery and get in touch...


What You Say

It's incredible! From the moment I took it off the bike rack, and put it on the ground, it made zero vibration sounds. Just the sound of raw tyre to brick knock, and a gentle chain clank to the derailleur cage. Gone were the standing-vibrations that rattled throughout the entire bike. I'm…Tom Bammann
Orange and black Ciclovation handlebar tape, fitted to a custom-built Bossi Grit SX titanium gravel bike
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