Werk · Bafang 500W Hub · 48V 20Ah · Shimano Alivio 9-Speed · 27.5" · Cargo Frame
Surface 604 Werk
Built to haul. Front and rear rack mounts, reinforced frame, wider 2.6" tires, and the same 960 Wh class-leading battery — for riders who carry loads, not just themselves.
The Surface 604 Werk is a cargo-geometry commuter e-bike built around the same 960 Wh / 48V 20Ah Samsung 21700 platform as the Colt and Rook, but with reinforced battery mounts, a front rack mount, and wider 2.6" tires designed for loaded riding. The one-size M/L frame fits a broad range of riders with an adjustable stem. Bafang 500W geared hub motor, dropout torque sensor, Shimano Alivio 9-speed, Tektro Auriga hydraulic disc brakes. UL 2271 + UL 2849 dual certified. 300 lb / 136 kg weight capacity.
Highlights
Front rack mount — cargo DNA built in
The Werk frame includes reinforced front rack mounts and a welded rear rack as standard. Built for panniers, cargo crates, groceries, and gear — not bolted-on as an afterthought.
2.6" wide tires — stability under load
Wider than the Colt or Rook's 2.4" tires, the 27.5×2.6" Panaracer tires add contact patch and damping when the bike is carrying heavy loads — more planted, less twitchy with weight on the racks.
300 lb / 136 kg weight capacity
Designed for real-world loads. Whether it's a heavy rider, full panniers, or cargo on both racks, the Werk frame is rated for the weight you'll actually put on it.
One-size adjustable frame
A single M/L frame with an adjustable Satori stem fits riders from 5'7" to 6'6". Simplifies stocking and means no size-selection mistakes at point of sale.
Colours
Powertrain
| Motor | Bafang 500W (peaks 750W) Geared Hub Brushless |
| Torque | 65 Nm |
| Drive mode | Dropout torque-sensing pedal assist + thumb throttle |
| Throttle | Thumb push-activated |
| Controller | Surface 604 custom 12 MOS 48V 500W 25Ah Smart Controller |
| Top speed (PAS) | 45 km/h (28 mph) · Class 3 |
| Top speed (throttle) | 32 km/h (20 mph) |
Battery & Range
| Battery | 48V 20Ah / 960 Wh — Samsung lithium-ion 21700 cells |
| Battery weight | 4.65 kg / 10 lbs |
| Certification | UL 2271 (battery) + UL 2849 (complete system) |
| Range | Up to 150 km / 90 mi (eco mode) |
| Charge time | 3–4 hours (full charge from empty) |
Electronics
| Display | Surface 604 colour LCD, 3.5", with USB charging jack |
| Front light | Büchel "Secu Forte" LED — 150 lumens |
| Rear light | Büchel LED rear light |
| Wire harness | 30Ah rated, handles up to 120A (upgraded) |
Drivetrain
| Derailleur | Shimano Alivio 9-speed |
| Cassette | Shimano 11–34T |
| Shift levers | Shimano Alivio 9-speed |
| Chain | KMC 9-speed |
| Crankset | Samox 40T front sprocket |
| Bottom bracket | Samox sealed |
Brakes
| Brakes | Tektro Auriga hydraulic disc — post mount, with motor inhibitors |
| Rotors | 180mm front and rear · 2.34mm thick |
Suspension
| Fork | SR Suntour XCM 27.5 · 80mm travel · thru-axle |
| Rear | Hardtail — no rear suspension |
Wheels & Tires
| Wheel size | 27.5" |
| Tires | 27.5" × 2.6" Panaracer · puncture protection · reflective sidewall |
| Rims | Aluminum alloy double-wall · 27.5" · 13G · 36H |
| Front hubs | Surface 604 aluminum |
Frame & Cockpit
| Frame | 6061 aluminum alloy · straight steerer headtube · custom reinforced battery mounts · internal cable routing · post-mount brakes |
| Stem | Satori Up2 adjustable |
| Handlebar | Promax aluminum · 30mm rise · 15° backsweep · 720mm wide |
| Pedals | Wellgo platform die-cast |
| Saddle | Selle Royal "Essenza Plus" gel · elastomer · relaxed position · 9° adjustable |
| Seat post | 30.4mm |
| Kickstand | Adjustable heavy-duty aluminum |
Sizing
| Sizes | One size (M/L) — adjustable stem |
| Rider height | 5'7"–6'6" (170–198 cm) |
| Weight capacity | 136 kg / 300 lbs |
Weight & Features
| Net weight | 29.48 kg / 65 lbs (with 20Ah battery) |
| Standard accessories | Welded rear rack · front rack mount · chain guard · adjustable kickstand · water bottle bosses |
| Lights | Integrated front + rear (standard) |
| Optional upgrade | SR Suntour NCX suspension seatpost |
| Assembly time | ~20 minutes |
| Warranty | 5-year frame · 2-year components |
| Origin | Designed in Vancouver, Canada |
Surface 604 Werk · 48V 20Ah / 960 Wh · Bafang 500W · Shimano Alivio 9-Speed · 27.5" · Cargo · One Size