ENVO Stax DropBar
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Pairs well with
1-Year Warranty
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Speed
32 KM/H
20 MP/H
Rated Power
500 W
Max Torque
60 Nm
Weight
19 kg
42 lbs
Max Range
100 Km
Click to Calculate
Light bike. Big battery.
ENVO Stax DropBar
Light, Fast, Allroad
The Stax DropBar is an allroad e-bike built around the drop bar. A 420 mm flared bar, LTWOO hydraulic levers, and 700C×40C tires sit on a hydro-formed 6061-T6 alloy frame — quick through the city, composed when the pavement runs out.
It is an allroad bike, not a gravel bike: the fork is rigid, not suspended. That is the point. Nothing is carried that you do not need, which is how the bike stays at 19 kg while still carrying a 461 Wh battery — roughly double what most light drop-bar e-bikes give you.
The 36V torque-sensor drivetrain measures how hard you push and answers in kind, so the assist feels like your own legs on a good day — not a throttle. Welds are smoothed, the headlight is recessed into the frame, and every cable is routed internally.
Built around the drop bar
Everything above the head tube was redesigned for drop bars — the levers, the stem length, the display mount, even where the headlight sits.
Three hand positions instead of one. The flare widens the drops for low-speed control, so you keep the aero position without giving up the steering.
LTWOO GR4009 levers combine braking and shifting in one hood. The KD386 display sits forward on its own bracket where you can actually read it from the drops.
A 42T range at the back means the climbing gear is there when the assist is not — on a steep pitch, at low battery, or when you simply want to ride it like a bike.
700C × 40C
40 mm of tire is the width that makes an allroad bike work: narrow enough to roll fast and quiet on pavement, wide enough to take a gravel path or a broken shoulder without flinching. There is enough frame clearance to run a fender underneath.
ENVO Stax DropBar Features
FRAME
One 700C frame, hydro-formed from 6061 aluminium and T6 heat-treated, shared with the flat-bar Stax and derived from the proven Stax Pro. Smooth welds, internal cable routing, and a recessed headlight give it a clean line. Wheelbase 1059 mm, chainstay 434.5 mm.
TORQUE SENSOR
A 73 mm torque-sensor bottom bracket reads how hard you are actually pedalling, hundreds of times a second, and the controller scales the motor to match. No throttle, no lurch — it rides like a bike, only faster.
INTEGRATED HEADLIGHT
The LED headlight is recessed into the head tube instead of clamped to the bar. On a drop-bar bike that is a safety decision, not a styling one: it keeps the front brake hose clear of the light so the bars always return to centre.
UL-CERTIFIED BATTERY & CHARGER
A 36V 12.8Ah LG cell pack — 461 Wh, up to 100 km — carried inside the down tube rather than bolted to the seat post, so the weight sits low and the line stays clean. The pack and the 36V/2A charger are UL-certified components, so you can charge it indoors with confidence.
SADDLE & SEATPOST
A Vivo Ergo 269×145 mm saddle on a locking seat clamp — the clamp is included, not an upsell. The tail light tucks in behind, out of the airflow and out of the way of a pannier.
ENVO Stax DropBar Sizing Chart
Measurements
| A | Effective Seat Tube Length | 18.6" | 47.2cm |
| B | Effective Top Tube Length | 19.9" | 50.5cm |
| C | Tire Diameter | 27.6" | 70.0cm |
| D | Minimum Seat Height | 34.3" | 87.0cm |
| E | Maximum Seat Height | 40.2" | 102.0cm |
| F | Stepover Height | 27.2" | 69.0cm |
Sizing Chart
| 1. | Height | 5'5"–6'5" | 1.65–1.95m |
| 2. | Inseam | 30"–37" | 76–93.8cm |
Will It Actually Go 100 km?
Probably not on your commute — and any brand that tells you otherwise is quoting a lab. Real range depends on your weight, the hills, the wind and the cold.
Product details
Full Specs
- Frame: 700C Stax, hydro-formed 6061-T6 alloy, smooth welds, painted, internal cable routing
- Fork: Rigid, thru-axle, painted
- Handlebar: Zoom HBL002 drop bar, 420 mm wide, 12° flare, with bar tape
- Stem: TDS-C301-8, Ø28.6×Ø31.8, 75 mm, +6°
- Brake levers: LTWOO GR4009-L / GR4009-R hydraulic
- Brake calipers: LTWOO R4010 flat-mount, front and rear
- Rotors: LTWOO 160 mm
- Rear derailleur: LTWOO GR5009, 9-speed
- Freewheel: LTWOO 9-speed, 11-42T
- Chainwheel: 42T, 170 mm crank, torque-sensor fit
- Chain: CT-9, 1/2"×3/128", 116L
- Bottom bracket: LDS torque sensor, 73 mm
- Motor: Brushless rear hub, 36V
- Controller: 36V, 17±1A, torque-sensor
- Battery: 36V 12.8Ah LG cells (461 Wh), UL-certified
- Charger: 36V / 2A, UL, US DC2.1
- Display: KD386 LCD, 36V, Bluetooth, forward-extending bracket
- Speed sensor: V12L
- Tires: 700C×40C, Presta 60 mm
- Rims: J16F 700C×1.95 — front 28H, rear 36H
- Front hub: KT-MSCF ID12×100, thru-axle, 28H
- Saddle: Vivo Ergo 1217HRN, 269×145 mm
- Seat clamp: Locking
- Pedals: Wellgo B087DU alloy, 9/16", with reflectors
- Lighting: LED headlight integrated into frame; AA-battery tail light
- Included: HDP-7 derailleur protector, chainstay protector
- Weight: 19 kg / 42 lbs
- Top assisted speed: 32 km/h / 20 mph
Stax vs Stax DropBar
The Stax and the Stax DropBar are the same bike from the bottom bracket down. They share one 700C frame, the same 36V rear hub motor, the same 461 Wh LG battery, the same torque-sensor bottom bracket, the same Bluetooth display, and the same 700C×40C tires. What changes is the cockpit — and the cockpit changes the bike.
Differences
Handlebar: The DropBar runs a 420 mm drop bar with 12° flare and three hand positions. The Stax runs a 680 mm flat bar with one.
Shifting and braking: The DropBar uses LTWOO GR4009 hydraulic drop-bar levers, integrating both. The Stax uses a mechanical LTWOO shifter with flat-bar hydraulic levers.
Brake cutoff: The Stax cuts motor power when you brake. The DropBar deletes the cutoff sensor for a cleaner cockpit — with a torque sensor and no throttle, assist already falls away the moment you stop pedalling.
Which one: Take the DropBar if you ride longer, faster, into wind, or off pavement, and you want the hand positions. Take the Stax if your riding is short, upright, stop-and-go city work.
Blog posts
FAQs
Please read our FAQs page to find out more.
Is this a gravel bike?
Not quite — it is an allroad bike, and we would rather be precise about it. Most gravel bikes today run a suspension fork; the Stax DropBar runs a rigid thru-axle fork. It is built for pavement, bike paths, hardpack, and light gravel. For rough, technical gravel you want a bike with front suspension.
Does it have a throttle?
No. The Stax DropBar is a pedal-assist bike driven by a torque sensor in the bottom bracket, which measures how hard you are pedalling and scales the motor to match. It is what makes the bike feel like a bike rather than a scooter, and it is deliberate on a drop-bar frame where a throttle has nowhere sensible to live.
How far will it go on a charge?
Up to 100 km / 62 miles from the 461 Wh pack. Real range depends on assist level, rider weight, terrain, wind, and temperature — expect the top of that range on flat pavement in a low assist level, and less into wind or up hills.
Can I put a rack and fenders on it?
Yes. Fender clearance was engineered into the rear of the frame from the start rather than added afterwards — the rear-centre was sized around a fender and a 40C tire together. There are mounts for a rear carrier.
What size rider does it fit?
The Stax DropBar is a single frame size. Reach is 389 mm and stack is 595 mm, with a 1059 mm wheelbase. If you are between sizes or unsure, talk to us or your local dealer before ordering.
Why drop bars on an e-bike?
Three hand positions and a lower, narrower profile. On a flat bar your hands never move and you sit upright into the wind. Drops let you get out of the wind when it matters, move your hands on a long ride, and hold a narrower line in traffic. The 12° flare keeps low-speed control closer to a flat bar than a traditional road bar would.