Price: $639.99
(as of Jul 02, 2026 07:04:58 UTC – Details)
From the brand
Full Suspension & Dual Brake
Greatwork is a trusted eBike brand offering high-performance electric bikes for all kinds of riders. Our lineup includes fat tire mountain bikes, vintage-style motorbikes, and safe, fun models for kids.
Designed for power, comfort, and durability. Greatwork bikes let you explore with confidence – on the road, off the trail, or anywhere in between.
Ride Bold, Ride Beyond !
Greatwork Electric Scooter
Greatwork Electric Bike
Greatwork Electric Bike
20″ x 4 Fat Tires Ebike
When will I receive my electric bike?
Ship from California or Pennsylvania warehouse. Processing (1–2 business days); Deliveries within the shipping state typically take 2–3 business days, while deliveries to the lower 48 states (excluding the CA/PA) usually take 4–7 business days.
Will the ebike I received be assembled?
The bike will arrive mostly assembled. We provided the tools in the box and an assembly video on the detail page.
How can I maximize my e-bike’s lifespan?
Regularly maintain tires, charge batteries properly, and store in a dry place—this keeps it running smoothly for years.
What kind of battery does this eBike have, and how far can it go on a single charge?
This eBike is equipped with a high-capacity 48V 20Ah lithium battery, offering a range of 40–60 miles on throttle mode and 80–100 miles with pedal assist.
How to turn on the electric bike?
Press the battery power button to the 丨 position, then hold the middle power button for 3 seconds to turn on the display. PAS-0 is the pedal mode; PAS 1-5 are the power assist modes.
How to activate the bicycle boost mode?
Holding the “-” button will activate the boost mode.
Is the crack on the bike wheel rim caused by damage?
No, actually. Many big-brand wheel rims have a manufacturing seam—heated, bent, then joined into a circle. It’s a normal craft mark, not damage.
Is it normal for the charger and battery to get warm during charging?
Yes, nomal. This bike’s 3A fast charging sends more current quickly, causing warmth. Safe if under 130°F.
Why might my e-bike lose power or stop under heavy loads, long climbs, or heat?
2 main reasons: motor overheating (controller cuts/reduces power to prevent damage) and controller overheating protection (limits power or shuts down).
🚲 【Full Suspension & Sturdiest Frame】 This retro style Ebike for adults Features 6-level full suspension—two front fork shock absorbers, one rear spring shock absorber, two 20″x4″ fat tires and one long soft seat. The full-suspension system effectively dampens shocks from rough and uneven terrain, making cycling very comfortable. The frame of this electric bicycle is made of sturdy steel, ensuring a very stable and safe ride.
🚲【2500W Peak Motor】GREATWORK R8 electric bike for men is powered by high-performance 2000W(peak 2500W) motor with a high torque of 125N·m, taking you to tackle all terrain and climb 35° uphill easily. The powerful 2000W motor makes the electric dirt bike reach 37MPH top speed, perfect for daily commutes, off-road adventures, short trip for camping, and long-distance travel.
🚲【1200WH Removable Battery】This electric Bike for men and wemen is equipped with an robust IP54 waterproof 48V 25AH detachable battery (with key lock). With a full charge of 7-8 hours, the e-bike can provide a range of up to 100 miles in PAS mode and 40-60 miles in electric mode, making it perfect for both adventurous spirits and daily commuters.
🚲【3.5-inch LCD Display & Dual Disc Brakes】The 3.5-inch enlarged color LCD display provides real-time metrics, including speed, mileage, PSA level, and battery status. Equipped with front and rear disc brakes, the system ensures responsive stopping within 2 seconds, offering precise control in all riding conditions.
🚲【7-Speed Gear System & 5 Riding Modes】Featuring a 7-speed gear shifter, this off-road electric bike enables seamless gear adjustments to tackle diverse terrains, optimizing both riding comfort and efficiency. The commuter ebike offers five versatile riding modes: Pure Electric, Pedal Assist, Normal Bike Mode, Cruise Mode, and Walk Mode. With five assistance levels—10/17/24/31/37 mph respectively—riders can easily select the mode that best suits their needs.
🚲【High-Visibility Front & Rear Lights】This 20″ fat tire electric bike features an ultra-bright LED headlight and integrated taillights with left/right turn indicators, delivering enhanced visibility and safety for nighttime rides. The powerful lighting system ensures clear illumination of the path ahead while making the rider easily noticeable from all angles, ideal for the dark environments.
⚡【90% Pre-Assembled for Hassle-Free Setup】The GREATWORK R8 Electric Bike arrives 90% pre-assembled, saving you from time-consuming complicated installations. Product page videos offer step-by-step guidance, and the included instruction manual provides detailed setup instructions for added convenience.
⚡【One-Year Warranty】Enjoy a one-year official warranty (covering core components and non-human quality issues) plus 24/7 responsive customer support—ride with total confidence!
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