Sunshine and 960 watts.
960Wh
BATTERY
28mph
TOP SPEED
93mi
ECO RANGE
UL 2849
CERTIFIED
Torque
SENSOR
or $80/mo with Affirm · 0% APR
Free shipping · ~20 min assembly · UL 2849 Certified · 2-year warranty
960Wh Battery
Biggest in class
28mph Class 3
Pedal assist speed
Up to 93 mi
Eco range
UL 2271 Battery
Certified safe
UL 2849 E-Bike
Full system certified
Torque Sensor
Dropout design
960Wh — Up to 93 mi on a single charge. More than any competitor at this price.
Surface 604 SUNNY DAY
960Wh
~93 mi
Aventon Level 3
708Wh
~69 mi
Lectric XPress 750
672Wh
~65 mi
Velotric Discover 3
691Wh
~67 mi
Ride1Up Vorsa
720Wh
~70 mi
Competitor ranges estimated proportionally from battery capacity. Actual ranges may vary.
| Mode | Range (mi) |
|---|---|
| PAS 1 (Eco) | 62–93mi |
| PAS 2 (Tour) | 43–62mi |
| PAS 3 (Standard) | 31–43mi |
| PAS 4 (Sport) | 22–31mi |
| PAS 5 (Turbo) | 16–22mi |
| Throttle Only | 25–34mi |
Range varies by rider weight, terrain, temperature, tire pressure, and wind. Upper range reflects lighter rider (~130 lbs) on gentle terrain. Lower range reflects heavier rider (~200 lbs) on moderate hills.
Built like a bike. Rides like a bike. Lasts like a bike.
The biggest battery on any cruiser eBike. Ride the boardwalk, the bike path, and still have charge for tomorrow.
Upright seating, swept-back handlebars, comfortable saddle. Designed for enjoying the ride.
Easy on, easy off. The Sunny Day's step-through design works for every rider.
1
torque sensor since 2020
3
controller variants
20
min to replace
0
parts on backorder
Designed in Vancouver
Since 2014
3-Year Frame Warranty
All components
Free Shipping
Ready in ~20 min
50,000+ Riders
1,000,000 km logged
Every component is from a brand your mechanic already stocks.
Dropout Torque Sensor
Tektro Auriga Hydraulic Disc Brakes
Real rides. Real riders. From city commutes to coastal trails.
Surface 604 bikes come in two frame sizes. Use your height to find the right fit.
S/M
Riders 5'4" – 5'9"
163 – 175 cm
M/L
Riders 5'9" – 6'3"
175 – 190 cm
Between sizes? Go with S/M if you prefer a more upright position, M/L if you prefer to stretch out.
Step-through frame — easy mounting and dismounting for all riders.
All Surface 604 bikes feature adjustable stems and ergonomic handlebars for fine-tuning your fit.
Independent reviews from trusted publications.
ElectricBikeReview.com · 2025
Surface 604 - Sunny Day Cruiser
Watch the full unboxing and assembly guide. Everything you need is included in the box.
