Local Services • Cardiff • Bike Repair & E-Bike Specialists
Bike Repair Cardiff: Professional Bicycle & E-Bike Repairs, Servicing & Conversion Kit Installation
- 1) About our Cardiff bike repair shop
- 2) What we repair and service
- 3) E-bike repair and diagnostics in Cardiff
- 4) Conversion kit installation service
- 5) Battery repair and replacement
- 6) General bicycle servicing and tune-ups
- 7) Why choose All4eBikes for bike repair in Cardiff
- 8) How to visit us – location, hours, and contact
- 9) FAQ – bike repair Cardiff
1) About Our Cardiff Bike Repair Shop
All4eBikes is a specialist bike repair and e-bike shop based in Roath, Cardiff (CF24 1QU). We work on all types of bicycles and electric bikes — from everyday commuters and mountain bikes to high-power conversion builds and custom DIY e-bike projects.
Whether your bike needs a quick safety check, a full service, or a complete e-bike conversion, our team has the tools and experience to get it done properly. We also stock a wide range of e-bike parts, batteries, motors, and conversion kits so we can source what you need without delays.
We’re open Mon–Fri 11:00–18:00 and Saturday 11:00–15:00. You can also contact us via WhatsApp: 07769 769 494 or email: [email protected]
2) What We Repair and Service
Our repair shop handles everything from simple puncture fixes and brake bleeds to full e-bike motor diagnostics and conversion kit fitting. Here’s an overview of the main services we offer:
⚡ E-Bike Repairs & Diagnostics
Motor faults, controller issues, display errors, wiring problems, sensor failures, and full system diagnostics for all e-bike types.
🔧 General Bike Servicing
Full tune-ups, gear adjustments, brake servicing, headset and bottom bracket checks — for road bikes, MTBs, hybrids, and commuters.
🔋 Battery Repair & Replacement
Battery diagnostics, BMS checks, cell testing, and replacement batteries for hub motor systems, mid-drives, and custom builds.
🛠️ Conversion Kit Installation
Professional fitting of rear hub motor kits and Bafang mid-drive conversion kits — including wiring, display setup, torque arms, and test riding.
🔩 Punctures & Wheel Truing
Puncture repair, inner tube replacement, tubeless setup, spoke replacement, and wheel trueing for all wheel sizes.
⚙️ Brakes & Gear Adjustments
Hydraulic brake bleeding, cable brake setup, derailleur indexing, gear cable replacement, and shifter servicing.
3) E-Bike Repair and Diagnostics in Cardiff
Electric bikes have more components to go wrong than standard bicycles — and finding a mechanic in Cardiff who actually understands e-bike systems can be surprisingly difficult. At All4eBikes, e-bikes are our speciality. We work on hub motor builds, mid-drive systems, conversion kits, and a wide range of branded and custom e-bikes every week.
Common E-Bike Problems We Fix
| Problem | Likely Cause | What We Do |
|---|---|---|
| Motor not working / no assist | Controller fault, sensor issue, wiring damage, battery BMS cutoff | Full system diagnostic, identify and replace faulty component |
| Display showing error codes | Sensor disconnection, controller pairing, software fault | Error code diagnosis, sensor check, display reset or replacement |
| Battery not charging / poor range | Charger fault, BMS issue, cell degradation, loose connections | Battery voltage test, BMS inspection, charger check, replacement advice |
| Motor cuts out under load | Voltage sag, loose connectors, controller overheating, brake cutoff fault | Load test, connector inspection, thermal check, brake sensor test |
| Unusual motor noise | Worn bearings, loose motor mount, phase wire issue | Motor inspection, bearing check, mount tightening, cable diagnosis |
| Throttle or pedal assist not responding | Sensor misalignment, magnet position, throttle fault | Sensor alignment check, throttle test, replacement if required |
4) Conversion Kit Installation Service in Cardiff
We install electric bike conversion kits professionally — including all the steps that DIY guides can make look simple but that genuinely matter: correct torque arm fitting, safe cable routing, proper chainline on mid-drives, and a full test before you ride.
If you’ve already bought a kit and want it installed correctly, or if you’d like us to recommend the right kit for your specific bike and use-case, we can help with both.
What Our Conversion Installation Includes
- Axle and dropout compatibility check
- Motor wheel fitting (cassette, rotor, spacing)
- Torque arm installation
- Controller mounting and cable routing
- Display and controls setup
- Battery mounting and connector check
- Speed sensor alignment
- Full safety test ride
- Bottom bracket removal and shell check
- Motor fitment, lock ring torque, and clearance check
- Chainring and crank installation
- Chainline verification across cassette
- Display, keypad, and speed sensor setup
- Battery mounting and fuse installation
- Gearing and assist level configuration
- Full safety test ride
We also stock a range of conversion kits, batteries, and motors in-shop, so if you need a kit sourced we can usually supply it directly.
5) Battery Repair and Replacement
E-bike batteries are the most expensive single component on most builds — and they’re also one of the most commonly misdiagnosed. Before writing off a battery, it’s worth a proper diagnostic check.
Battery Services We Offer
- Voltage and capacity testing — confirm actual state of health vs rated capacity
- BMS (Battery Management System) diagnostics — identify if the BMS is cutting off prematurely
- Charger testing — rule out charger faults causing poor charging
- Connector and wiring inspection — identify high-resistance joints causing voltage sag
- Replacement battery supply and fitting — we stock 36V, 48V, 52V, and 72V batteries including downtube and triangle packs
6) General Bicycle Servicing and Tune-Ups
Alongside our e-bike specialism, we service and repair all types of standard bicycles. Whether you’re a daily commuter whose gears have drifted, a mountain biker with a loose headset, or someone who’s just pulled an old bike out of the shed — we can get it back to safe, smooth working order.
General Service Includes
| Service Area | What We Check & Do |
|---|---|
| Gears | Derailleur alignment, cable tension, indexing, limit screw adjustment, hanger check |
| Brakes | Pad wear inspection and replacement, hydraulic bleed (disc), cable tension (rim/cable disc), rotor check and alignment |
| Drivetrain | Chain wear check, cassette and chainring inspection, bottom bracket bearing check |
| Wheels | Trueness check, spoke tension, puncture repair, tyre condition and pressure |
| Headset & steering | Bearing play check, stem bolt torque, bar alignment |
| Saddle & seatpost | Height and angle check, clamp bolt torque, seatpost security |
| Lubrication | Chain lube, pivot points, cable oiling where accessible |
7) Why Choose All4eBikes for Bike Repair in Cardiff
Most general bike shops have limited experience with e-bike electronics, controllers, and motor systems. E-bikes are our core business — we sell, build, and repair them every day.
We stock conversion kits, batteries, motors, displays, controllers, and accessories. Most repairs don’t need to wait for parts to be ordered.
We’ll tell you clearly what’s wrong and what it will cost before we start. No unnecessary work, no surprise bills.
Based in Roath (CF24), we’re easy to reach from central Cardiff, Newport Road, and surrounding areas. Walk-ins are welcome or book ahead for faster service.
8) How to Visit Us – Location, Hours & Contact
We’re located at 2 Beresford Road Lane, Cardiff, CF24 1QU — in the Roath area, easily accessible from Newport Road and the city centre.
| Day | Hours |
|---|---|
| Monday – Friday | 11:00 AM – 6:00 PM |
| Saturday | 11:00 AM – 3:00 PM |
| Sunday | Closed |
- 📱 WhatsApp: 07769 769 494
- 📧 Email: [email protected]
- 🌐 Shop: all4ebikes.co.uk/shop
For conversion kit fitting, battery work, or complex e-bike repairs, we recommend messaging us first so we can confirm availability and book a slot for you.
9) FAQ – Bike Repair Cardiff
Yes — we work on road bikes, mountain bikes, hybrids, commuters, folding bikes, and electric bikes of all types. If you’re unsure whether we can help with your specific bike, send us a message and we’ll let you know.
We work on most e-bike systems including hub motor builds, Bafang mid-drives (BBS01B, BBS02B, BBSHD, M-Series), and a wide range of branded commuter and mountain e-bikes. For highly proprietary systems, we’ll advise honestly if we’re not the right fit.
Walk-ins are welcome during opening hours. For larger jobs — conversion kit installation, full services, or battery work — we recommend contacting us in advance to book a slot so you’re not waiting.
In most cases, yes. We stock a wide range of e-bike parts, batteries, motors, controllers, and displays in-shop. If we don’t have what you need on the shelf, we can usually source it quickly.
Yes. Bring your bike and your kit, and we’ll fit it professionally. We recommend checking compatibility before you visit — message us your bike model and kit details and we’ll confirm it’ll work together.
Yes. Bring it in or describe the error code and symptoms via WhatsApp. Many common error codes relate to sensors, controllers, or battery faults that we can diagnose and fix quickly.
© All4eBikes • Bike repair and e-bike specialists, Cardiff CF24.
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