Drive System
Gates CDX Belt
Gates CDX belt drive with 12,000km warranty. Proven durability you can trust.
Horacio Bikes
Horacio Serenio Step Through Gates Belt-Drive Electric Bike – Automatic Gear Shifting E-Bike
Horacio Serenio Step Through Gates Belt-Drive Electric Bike – Automatic Gear Shifting E-Bike
Regular price
$1,849.00
Regular price
$2,999.00
Sale price
$1,849.00
Unit price
per
Tax included.
New Technology
Couldn't load pickup availability
First in Australia with Bafang GVT Auto-Shift
SERENIO STEP-THROUGH — Belt-Drive Electric Bike
Gates CDX carbon belt meets the Bafang GVT automatic 3-speed hub for a seamless, silent ride. 36V 250W torque-assisted power, 504Wh Samsung battery, TFT display with auto-lighting.
Auto Shift
Bafang GVT 3-Speed
172% total gear range with cadence-adaptive shifting — focus on the ride, not the gears.
Battery
504 Wh Samsung
36V 14Ah removable pack, IP65 waterproof — practical 120 km range per charge.
Weight
24 kg (incl. battery)
6061 aluminium frame with internal routing — confident city handling.
Smart
MAINTENANCE
No chain oil, no rust, no mess. Silent and clean operation.
Value
Exceptional Value
Comparable tech elsewhere costs $3,000+ for belt drive alone — Serenio makes it attainable.
A Letter from Horacio Bikes
A Fair Go for Every Aussie Rider
We know what you’re thinking: Gates belt drive + Bafang auto-shift at that price? What’s the catch?
Here’s the truth: there is no catch. We simply want to make cutting-edge cycling technology accessible to every Aussie rider.
We’re an honest, value-driven Australian brand. Please see and feel our sincerity for yourself.
- No Middlemen, Just Value
We design our bikes here in Australia and work directly with our factory partners, with no distributors and no inflated markups. Every dollar you spend goes straight into what matters most: Gates, Bafang, Shimano, and other quality parts.
- What You See Is What You Get
Our Brisbane-based team guarantees that every specification listed is exactly what you’ll find on the bike, with no hidden surprises and no brand premium.
- Proof in the Pudding
We’re proud to hold a 4.9★ Trustpilot rating built entirely from genuine customer experiences.
Belt Technology
Gates CDX Carbon Belt — Clean, Quiet, Long-Life
No oil. No mess. No rust. Serenio adopts the Gates CDX carbon-reinforced belt for a whisper-quiet, low-maintenance ride designed for real urban life.
Why Gates CDX
- Carbon Fiber Reinforced — stable tension, precise power transfer.
- Oil-free & Clean — no grease on trousers, hands, or drivetrain.
- Weather-Resistant — water and dust resistant, ideal for daily commuting.
- Quiet & Smooth — metal-free meshing eliminates chain noise.
- Long Service Life — up to 12,000 km with proper alignment and tension.
Belt vs Chain — Real-World Differences
| Aspect | Belt Drive | Chain Drive |
|---|---|---|
| Noise | Whisper-quiet | Metal-on-metal |
| Maintenance | No oil, no rust | Needs oiling, can rust |
| Cleanliness | Clean hands & trousers | Grease & stains |
| Longevity | Up to 12,000 km | Shorter service life |
| Weather | Water & dust resistant | Sensitive to grime |
| Weight | Light & efficient | Heavier, stretches over time |
Australia's First
Bafang GVT Auto‑Shift — How It Works
Experience Australia's first Bafang GVT automatic 3‑speed hub — a seamless, intelligent shifting system that adapts to your cadence and speed. Designed for smooth starts, effortless cruising, and confident hill climbs with a total gear range of 172%.
How Auto‑Shift Works
- Start — Automatically selects the easiest ratio for smooth take‑off.
- Cruise — Shifts seamlessly to an efficient gear as your cadence stabilises.
- Climb — Detects increased load and downshifts to maintain comfort and rhythm.
Key Specs & Benefits
- Automatic 3‑Speed — Smart internal gear logic, no cables or levers.
- 172% Gear Range — Perfect balance of power, speed, and efficiency.
- Sealed Internal Hub — Low maintenance and all‑weather durability.
- Ultra‑Quiet — Works perfectly with our Gates belt drive for a silent ride.
Serenio — Full Specification
Clean Belt. Smart Auto-Shift. Built for Real-World Commuting.
Experience the thought and care behind every detail.
General Specs
Season
2026
Wheel Size
700C
Colour
Serenio Green / Pearl White / Midnight Black
Weight
24 kg (including battery)
Kickstand
Included
Fender & Carrier
Lightweight front & rear plastic fenders with aluminium rear carrier rack
Front & Rear Lights
Automatic light sensor for auto on/off, powered by main battery, IP65 waterproof
Power & Intelligence
Motor
Bafang H730, 36V 250W, Max possible torque 50 Nm
Controller
BAFANG CR A101, 36V 15A 250W torque-sensor controller (2nd gen)
Battery
Samsung Li-ion; Samsung 18650 3500 mAh cells; 504 Wh / 14 Ah; IP65 waterproof
Display
BAFANG DP C080 TFT with high-strength glass screen & PC/ABS housing; integrated ambient-light sensor for auto on/off headlights & tail light
Sensor
BAFANG Torque-Sensor
Bottom Bracket
BAFANG Torque-Sensor Bottom Bracket
36V / 250W50 Nm504 WhIP65
Drive System — Gates CDX + Bafang GVT
Groupset Brand
BAFANG GVT Auto-Shift
Rear Gears
3-Speed internal (auto) — total gear range 172%
Front Gears
Single
Cassette
Gates Carbon Drive CDC 22T, Chromoly Steel
Chain
Gates Carbon CDN (belt)
Crankset
Gates CDX 42T, 170 mm
Derailleur Rear
BAFANG GVT Auto-Shift 3-Speed Internal Gear
Belt DriveAuto-Shift Hub172% Range
Components & Design
Frame
6061 aluminium alloy
Fork
SR Suntour NEX-E25-DS-700C-63, Coil spring, 63 mm
Front Travel
63 mm
Headset
T192 Threaded Headset 1-1/8″ with sealed bearing
Handlebar
ZOOM MTB-AL-320BTFOV Aluminium, rise 20 mm, 680 & 700 mm width
Stem
ZOOM TDS-D631B-8FOV Aluminium, extension 75 mm — new design with fully internal cable routing
Grips
VELO VLG-2052D2(S) durable, UV-resistant, anti-slip silicone grip with single clamp lock
Seatpost
ZOOM Suspension Seatpost or rigid seatpost, Model SPS-405NA, Aluminium, Ø30.4 × 300 mm
Saddle
DDK-2727 Durable Comfort Saddle
Brake Type
Hydraulic Disc Brake
Brakes
SHIMANO MT200 Hydraulic Disc, rotor 160 mm
Hubs
Front: Quanta KT-K6BF Aluminium Hub 36H 13G, M9 × 100 mm axle, 2 sealed bearings with dust seals, black anodised, quick-release skewer; O.L.D. 115 mm.
Rear: BAFANG H730 Rear Hub Motor, Axle Length 148 mm
Rear: BAFANG H730 Rear Hub Motor, Axle Length 148 mm
Rims
J18SF 700C Double-Wall Alloy Rim, 36H 13G, AV valve, 18 mm height, black stainless-steel spokes
Tyres
KENDA K935 700C × 45C city/trekking tyre, black rubber with K-Shield puncture protection
Tubes
KENDA 700C × 45C tube, A/V Schrader valve
FAQ – About the Serenio
Why is the Serenio priced so low compared to other belt-drive e-bikes?
Because we sell directly to riders. No wholesalers, no middlemen, no inflated markups. Every dollar you spend goes into what truly matters — Gates Carbon Drive, Bafang auto-shift system, Shimano components, and our lifetime warranty alloy frame. We’re not cutting corners. We’re simply making premium cycling technology accessible to every Aussie rider.
Is the Gates belt real? Can it break? How durable is it?
Yes, it’s a genuine Gates Carbon Drive CDX belt engineered with carbon fiber tensile cords for exceptional strength. It comes with a 12,000 km or 2-year warranty and typically lasts up to 5× longer than traditional chains. When properly tensioned and kept clean, it’s extremely reliable and rarely fails in normal use.
Is the Bafang automatic shifting system reliable?
Absolutely. The Bafang H730 automatic 3-speed hub is proven globally with sealed internal gearing for durability. It was recently recognised with a German Design Award for innovation and reliability. The system carries a 24-month warranty and reduces user error and drivetrain wear by shifting automatically.
Can I turn off automatic shifting or shift manually?
No. The H730 is fully automatic and cannot be turned off. You can adjust the pedal-assist mode via the display, which influences how and when the system shifts. Manual gear shifting is not required.
What’s the real-world riding range?
Up to 120 km in Eco mode under ideal conditions (flat terrain, ~75 kg rider). Most riders can expect 70–90 km in Normal mode depending on terrain, rider weight, speed, tyre pressure and weather.
How long does it take to charge the battery? Where can I charge it?
Charging takes 4–6 hours with the included charger. The Samsung battery is removable so you can charge on-bike or indoors using any standard 240V Australian outlet.
Can I ride in the rain? What’s the waterproof rating?
Yes. Battery and lights are IP65 rated for heavy rain. The Gates belt will not rust. Avoid deep submersion or prolonged standing water.
Does the belt drive require maintenance?
Minimal. Wipe clean occasionally and check tension every few months. No lubrication or degreasing required. No oil, no mess.
What warranty is included?
Frame: Lifetime warranty
Bafang Motor: 24 months
Samsung Battery: 18 months
Gates Belt: 12,000 km or 2 years
SR Suntour Fork: 24 months
Shimano Components: 24 months
See full terms on our Warranty Policy page.
Do you provide replacement parts if something goes wrong?
Yes. We stock and supply replacement parts for major components including Gates belts, Bafang motors, displays, batteries, brakes, and drivetrain parts. If a part fails under warranty, we’ll replace it at no cost. After warranty, we supply parts at a fair price from our Brisbane warehouse. Our service team ensures you’re never without support.
Where are Horacio bikes designed?
All bikes are designed in Brisbane, Australia. Each bike is inspected and test-assembled before shipment to ensure reliability.
Can I test ride the Serenio?
Yes, test rides are available at our Hillcrest showroom in Brisbane.
Book via: info@horaciobikes.com.au
What payment methods do you accept?
We accept Visa, Mastercard, PayPal, Afterpay and Zip Pay (interest-free installments).
What is your return policy?
We offer a 30-day return policy. Please see our Return Policy page for full details.
What’s the maximum load capacity?
Maximum load (rider + cargo + accessories) is 125 kg. The optional rear rack supports up to 25 kg for cargo only and must not be used to carry passengers.
Are the tyres puncture-resistant?
Yes. The Serenio uses KENDA K935 with K-Shield puncture protection. They greatly reduce the risk of flats, though no tyre is 100% puncture-proof.
Do the lights turn on automatically?
Yes. Integrated front and rear lights are IP65 and auto-activate via ambient light sensors. Powered by the main battery, so there’s no separate charging.
Can I see real customer reviews?
Yes, Horacio holds a 4.9★ Trustpilot rating built entirely from verified, genuine customer reviews.
Delivery Options
Shipping Options
Choose from local delivery, nationwide express, or Brisbane pickup — all professionally assembled and tuned.
Local Delivery
Ready to Ride
Brisbane, Gold Coast, Logan & Ipswich. Fully assembled and tuned by our team — ride-ready on arrival.
2–7 business days*Selected areas only
More Details →Express Shipping
85% Assembled
Australia-wide shipping in a protected bike carton. Final setup required (front wheel, handlebar, pedals).
2–7 business days (est.)*WA & remote may take longer
More Details →Store Pickup
Ready to Ride
Collect from our Brisbane warehouse. Fully assembled and quality-checked by Horacio mechanics.
1–3 business days*Preparation time for assembly
More Details →Final cost & availability are calculated at checkout based on your address.
Support & Resources
Support & Assembly
Guides, tutorials, and fast help from the Horacio team.
Help Centre
Answers to common questions, maintenance tips, troubleshooting, and policies — all in one place.
Visit Help CentreAssembly Guide
Step-by-step assembly & tuning videos for 85%-assembled bikes. Be ride-ready in minutes.
View Assembly GuideNeed help? Our professional team replies fast.
info@horaciobikes.com.au