FISH HAWK
Akez 20" Fat Tire Electric Snow Bike
48V 750W — Engineered for winter. Built for adventure.
The Akez FISH HAWK redefines cold-weather mobility. Purpose-built to conquer snow-packed trails, icy urban streets, and rugged backcountry terrain, this 20-inch fat tire electric bike merges a lightweight aluminum alloy frame with a high-torque 750-watt rear hub motor. The result is a machine that feels equally at home slicing through fresh powder during a weekend expedition as it does navigating frosty morning commutes. Every component—from the Chaoyang 20×4.0" snow tires to the hydraulic disc brakes and oil spring fork—has been selected to perform reliably when temperatures drop and conditions turn unpredictable.
What truly sets the FISH HAWK apart is its holistic integration of power management, rider comfort, and all-weather durability. The 48V 13Ah lithium battery delivers a real-world range of 19–37 miles (31–60 km), while the 7-speed gear system provides the mechanical flexibility to tackle steep ascents or cruise efficiently on flat ground. A color LCD smart display keeps vital ride metrics front and center, so you always know your speed, remaining charge, and trip distance at a glance. Whether you are an experienced e-bike enthusiast or discovering electric fat tire biking for the first time, the FISH HAWK offers an accessible yet exhilarating entry point into four-season riding.
Core Architecture
Engineered Systems for Snow Performance
Every subsystem works in concert to deliver traction, control, and endurance in winter environments.
750W Rear Hub Motor — High Torque, Silent Propulsion
The brushless rear hub motor delivers 750 watts of sustained power with impressive peak torque. Unlike mid-drive systems that route power through a chain, the hub motor applies force directly to the rear wheel, reducing drivetrain wear and ensuring instant, silent acceleration even when starting from a standstill in soft snow. Riders can expect a top speed of 28 mph (45 km/h), making the FISH HAWK one of the most capable fat tire e-bikes in its class for both recreational trail riding and practical transportation.
48V 13Ah Lithium Battery — Endurance You Can Count On
The 48-volt architecture is a meaningful upgrade over entry-level 36V systems. Higher voltage reduces current draw for the same power output, which translates to less resistive heat buildup, improved efficiency, and extended battery lifespan. With a 13Ah capacity (624 Wh total energy), the FISH HAWK achieves a practical range of 19–37 miles (31–60 km) on a single charge. Range varies based on terrain, rider weight, assist level, and ambient temperature—factors we encourage riders to explore to optimize their own routes. The removable battery pack allows convenient indoor charging, a critical advantage during frigid winter months when lithium cells perform best at room temperature.
Chaoyang 20×4.0" Snow Tires — The Foundation of Fat Tire Capability
Wide 4.0-inch tires are the defining feature of any fat bike, and the FISH HAWK's Chaoyang rubber is engineered specifically for cold-weather grip. The generous contact patch spreads the bike-plus-rider weight over a much larger surface area compared to standard 2.0–2.5" tires. This dramatically reduces ground pressure—a principle known as flotation—allowing the bike to glide over soft snow, loose sand, and mud without sinking. The aggressive tread pattern features widely spaced knobs that self-clean, shedding packed snow as the wheel rotates to maintain consistent bite. Riders can also fine-tune tire pressure down to the 5–8 PSI range for maximum flotation in deep powder, or increase it for more efficient rolling on hardpack.
Control Systems
Precision Drivetrain & Confident Braking
Mechanical versatility meets hydraulic stopping power for total command in variable conditions.
7-Speed Gear System — Adaptable Across Terrain
The 7-speed rear derailleur system provides a versatile range of gear ratios that complement the electric motor's output. On steep, snow-covered inclines where the motor appreciates mechanical assistance, lower gears multiply torque and reduce strain on both the battery and the rider. On flat or descending terrain, higher gears allow comfortable pedaling input at speed without exceeding a natural cadence. The external drivetrain design is easy to service, adjust, and clean—practical considerations for riders who subject their bikes to slush, road salt, and grit. Industry-standard Shimano-compatible components mean replacement parts and upgrades are widely available.
Hydraulic Disc Brakes — Reliable Stopping Power in Wet & Icy Conditions
Hydraulic disc brakes represent a significant safety advantage over mechanical cable-actuated alternatives, particularly in winter riding scenarios. The sealed hydraulic system is impervious to moisture ingress, road salt corrosion, and cable freeze-up—all common failure points for mechanical brake cables exposed to sub-freezing temperatures and slush. The large-diameter rotors provide substantial leverage for heat dissipation and consistent pad contact, while the hydraulic fluid transmits force with minimal friction loss, delivering progressive, modulated braking that inspires confidence on slick surfaces. Less hand effort is required at the lever, reducing rider fatigue during long descents or stop-and-go urban riding.
Oil Spring Front Fork — Suspension That Tames the Trail
The oil spring fork combines a steel coil spring for primary impact absorption with an oil-damped cartridge that controls rebound speed. This hybrid design prevents the "pogo stick" bounce-back common in undamped spring forks, keeping the front tire planted on uneven terrain for better steering precision. On snow-covered trails where hidden ruts, roots, and ice chunks create unpredictable surfaces, the fork's 80–100mm of travel (typical for this class) smooths out harsh impacts before they reach the handlebars. The result is reduced upper-body fatigue and significantly more control during extended rides over challenging terrain.
Rider Intelligence
Stay Informed With the Color LCD Smart Display
Real-time metrics at a glance, designed for visibility in bright snow glare and low-light conditions alike.
▶ Backlit Color LCD — Readable in All Light
The integrated color LCD panel presents speed, battery state-of-charge, trip distance, odometer, and pedal-assist level on a high-contrast screen engineered to remain legible even under direct sunlight reflecting off snow. The backlit display automatically adjusts brightness or can be manually toggled, ensuring clarity during dawn patrols and dusk rides alike. A USB port on the display module allows convenient on-the-go charging of small devices such as a phone or GPS unit—an underrated feature for long backcountry excursions.
▶ Pedal-Assist Modes & Throttle Control
Select from multiple pedal-assist levels to match your desired effort and range requirements. Lower assist levels maximize battery range for extended touring, while higher levels provide near-effortless acceleration for steep climbs or quick urban starts. A thumb throttle offers on-demand motor engagement independent of pedaling—ideal for navigating deep snow patches or intersections where a rapid burst of speed enhances safety and maneuverability.
Chassis Engineering
Lightweight Aluminum Alloy Frame
Agile geometry paired with fatigue-resistant metallurgy for seasons of dependable use.
The FISH HAWK's frame is constructed from a premium aluminum alloy that strikes an optimal balance between weight savings and structural integrity. Aluminum's natural corrosion resistance is a decisive advantage in winter riding, where exposure to road salt, calcium chloride de-icers, and persistent moisture would accelerate rust on untreated steel frames. The frame geometry positions the rider in a comfortable, slightly upright posture that enhances visibility and reduces lower back strain during extended rides. Reinforced weldments at high-stress junctions—such as the head tube, bottom bracket shell, and rear dropouts—ensure the frame withstands the additional torsional loads imparted by the powerful 750W motor and the leverage of wide fat tires.
The 20-inch wheel size, when paired with 4.0-inch tires, results in an overall rolling diameter comparable to a traditional 26-inch mountain bike wheel. This maintains familiar handling characteristics while providing the benefits of a smaller, stronger rim that resists impact damage and allows quicker acceleration due to reduced rotational inertia. For riders who value both nimble handling and robust durability, this wheel-and-tire combination represents a carefully considered design choice.
Technical Specifications
Detailed Parameters
Motor
750W Rear Hub
Brushless DC, high-torque output
Battery
48V 13Ah Lithium
624 Wh total energy capacity
Top Speed
28 mph (45 km/h)
Electronically governed maximum
Range
19–37 mi (31–60 km)
Varies by terrain & assist level
Tires
Chaoyang 20×4.0"
Snow tread, self-cleaning knobs
Gears
7-Speed System
Wide ratio range for all terrain
Brakes
Hydraulic Disc
Sealed system, all-weather reliable
Fork
Oil Spring Suspension
Damped rebound for trail control
Display
Color LCD Smart
Backlit, speed & battery metrics
Frame
Aluminum Alloy
Lightweight, corrosion-resistant
Ride Scenarios
Where the FISH HAWK Excels
Snowy Trails
Float over powder with 4.0" fat tires providing exceptional flotation and grip on winter singletrack.
Urban Commuting
Navigate frosty streets and bike lanes with confidence, arriving at work energized and on time.
Backcountry Exploration
Extend your riding season into winter. Discover frozen lakes, forest roads, and remote landscapes.
Beach & Sand
When summer returns, the same fat tires that float on snow excel on loose sand and coastal terrain.
Technology Deep Dive
Why 48V Architecture Matters
In the electric bicycle industry, battery voltage is a foundational design decision that ripples through every aspect of performance. The FISH HAWK's 48-volt system represents the sweet spot between the affordability of 36V entry-level platforms and the cost-prohibitive complexity of 52V+ specialist builds. Here is why that matters for your daily ride:
▶ Reduced Current, Reduced Heat
Power (watts) equals voltage multiplied by current. For the same 750W output, a 48V system draws approximately 15.6 amps, whereas a 36V system would draw nearly 21 amps. Lower current means less resistive heating in the motor windings and controller, improving overall energy efficiency and extending the operational lifespan of electronic components. This is especially relevant during sustained climbs or long rides in warmer conditions where heat buildup can trigger thermal throttling.
▶ Superior Torque at Low RPM
Higher voltage enables the motor to generate meaningful torque at lower rotational speeds. For a fat tire snow bike, this translates to smoother startups from a standstill in soft, yielding terrain—exactly the scenario where lower-voltage systems can feel sluggish or require excessive pedal input to get moving. The 48V architecture ensures the FISH HAWK responds eagerly to throttle input, even when the tires are buried in several inches of fresh powder.
Winter Riding Knowledge
Fat Tires & Flotation: The Science of Staying on Top
The core principle behind fat tire performance on snow is ground pressure reduction. A standard mountain bike tire with a 2.2-inch width might exert approximately 18–22 PSI of pressure on the ground under a combined bike-and-rider weight of 220 lbs (100 kg). By contrast, the FISH HAWK's 4.0-inch tires—especially when aired down to 6–8 PSI—can reduce ground pressure to as low as 3–5 PSI. This dramatic reduction prevents the tires from cutting through the snow's crust and sinking into the loose substrate beneath. The result is a sensation of floating, where the bike maintains forward momentum with far less resistance than a conventional tire would encounter. This same physics applies to sand, making the FISH HAWK a genuinely versatile four-season machine.
Frequently Asked Questions
Your Questions, Answered
What real-world range can I expect from the 48V 13Ah battery?
Range varies significantly based on several interdependent factors: rider weight, terrain gradient, ambient temperature, pedal-assist level selected, tire pressure, and average speed. Under moderate conditions—flat to rolling terrain, pedal-assist level 2 or 3, rider weight around 180 lbs (82 kg), and temperatures above 40°F (4°C)—riders can expect approximately 30–37 miles (48–60 km). In more demanding scenarios such as soft snow, sustained climbs, or extensive throttle-only use, range trends toward 19–25 miles (31–40 km). Cold weather reduces lithium battery efficiency by 15–25%, so winter riders should plan conservatively and store the battery indoors before rides.
How does the bike perform on steep, snow-covered hills?
The combination of the 750W rear hub motor and the 7-speed gear system provides substantial climbing capability. On grades up to 15–18%, riders can select a lower gear for mechanical advantage while engaging a higher pedal-assist level, allowing the motor to contribute peak torque at lower wheel speeds. The fat tires' enhanced traction prevents rear-wheel slip on packed snow, which is often the limiting factor on steep winter ascents rather than raw power. For extended steep climbs, we recommend using pedal-assist level 4 or 5 and maintaining a steady cadence to optimize motor efficiency and prevent overheating.
Are hydraulic disc brakes difficult to maintain in winter?
Quite the opposite—hydraulic disc brakes generally require less winter maintenance than mechanical alternatives. The sealed hydraulic system prevents moisture, road salt, and grit from entering the actuation mechanism, which is a common cause of cable corrosion and sticking in mechanical brake systems. The hydraulic fluid (typically mineral oil or DOT fluid) maintains consistent viscosity across a wide temperature range, ensuring reliable lever feel even in sub-freezing conditions. Routine care involves periodically checking pad thickness, cleaning the rotors with isopropyl alcohol to remove salt residue, and inspecting brake lines for any signs of abrasion. Bleeding the system every 12–18 months is recommended for optimal performance.
Can I ride this e-bike in rain or wet slushy conditions?
The FISH HAWK is designed with weather-resistant components suitable for riding in rain, slush, and wet snow. The motor housing is sealed against splashing water, and the battery casing includes gaskets that protect the internal cells and BMS (Battery Management System) from moisture ingress. However, the bike should not be fully submerged in water or subjected to high-pressure washing, which could force water past seals. After riding in wet, salty conditions, we recommend wiping down the frame, drivetrain, and electrical contacts with a damp cloth and allowing the bike to dry in a ventilated area. Applying a light lubricant to the chain after wet rides will prevent corrosion and extend drivetrain life.
What tire pressure should I use for snow riding?
Tire pressure is the single most adjustable variable affecting fat bike performance on snow. For soft, deep powder, pressures as low as 5–8 PSI maximize the contact patch and improve flotation. On packed snow trails or groomed singletrack, 8–12 PSI provides a good balance of traction and rolling efficiency. For mixed conditions that include stretches of pavement or hardpack, 12–18 PSI reduces rolling resistance while still offering more compliance than a standard tire. Always use a low-pressure gauge designed for fat tires, as standard automotive gauges lack the precision needed at these low ranges. Experimentation is encouraged—small adjustments of even 1–2 PSI can noticeably change ride feel.
Is the battery removable for indoor charging?
Yes. The 48V 13Ah lithium battery pack is designed for tool-free removal. A key-lock mechanism secures the battery to the frame during rides, and a simple turn of the key releases it for indoor charging or storage. This is a critical feature for winter riders, as lithium-ion cells charge most efficiently and safely at room temperature (60–75°F / 16–24°C). Charging a very cold battery can cause lithium plating on the anode, which permanently reduces capacity. We strongly recommend allowing a cold battery to acclimate to room temperature for 1–2 hours before connecting the charger.
Purchase with Confidence
Customer Protection & Support
Free Shipping on All Orders
Complimentary standard shipping on every FISH HAWK purchase. Delivered directly to your door with full tracking and secure packaging.
180 Days Purchase Protection
Extended protection covers manufacturing defects and component integrity for a full six months, giving you peace of mind through an entire riding season.
30 Days Money-Back Guarantee
If the FISH HAWK does not meet your expectations, return it within 30 days for a full refund. We stand behind the quality of every product we offer.
24 Months Warranty Service
A comprehensive two-year warranty covers the frame, motor, battery, and controller. Responsive after-sales support ensures any issue is resolved promptly.
Nationwide Service Network & Support
With over 3,000 authorized service centers across the United States, we ensure comprehensive after-sales support for your vehicle, giving you complete peace of mind.
We understand that maintenance needs may arise. When you purchase from us, you gain access to our unparalleled service ecosystem designed for maximum convenience and reliability.
1. DIY Repair & Parts Replacement:
For minor repairs or part replacements that can be handled personally, we provide cost-price genuine parts during the warranty period. Each order is accompanied by clear, step-by-step video tutorials to guide you through the self-repair process seamlessly.
2. Professional Servicing:
For issues requiring expert attention, simply contact our support team. We will locate the nearest authorized service center based on your order and location details. You only need to bring your vehicle to the designated center. Once servicing is complete, we will notify you for pickup. All repairs are free during the warranty period; afterward, only cost-based fees apply.
Rest assured—wherever you are, our extensive partner network is ready to keep your ride running smoothly.
Lifetime Limited Powertrain Warranty & Wrap Program
For added long-term security, our Lifetime Limited Powertrain Warranty and Lifetime Wrap Program provide continued mechanical breakdown coverage for as long as you own your vehicle—with no term or mileage restrictions.
Every product on Hekomart.com is expertly curated from thousands, quality tested, and lifestyle approved. Elevate your everyday.
Express Delivery Priority - Where Speed Meets Satisfaction
At Hekomart.com, we understand the anticipation that comes with every online order. While most platforms rely on standard economy shipping, we prioritize your excitement by strategically selecting premium express carriers to accelerate deliveries. Our intelligent logistics system analyzes real-time data to optimize routes, partnering with globally-recognized couriers like DHL, FedEx, and UPS to ensure 30% faster doorstep arrivals* than industry averages.
Every package receives 24/7 tracking visibility and proactive delivery updates, transforming waiting time into confidence. For time-sensitive purchases, our "Expedited Service Guarantee" offers optional priority handling at no extra cost, because your satisfaction isn't just a goal – it's the core of our delivery DNA.
*Based on internal 2025 data comparing standard shipping durations across major platforms. Delivery times vary by destination and customs procedures.
Credit Card 180 Days Purchase Protection
The 180 Days Purchase Protection protects the buyer if an item purchased has not been shipped or if a shipped item is significantly not as described by the seller. The 180 Days Purchase Protection covers all purchases and payments made through our website. We accept Visa, Master Card, American Express, and Discover Card. If you don't receive the item that you ordered, or it shows up significantly different from its description, you may qualify for Purchase Protection, and we'll reimburse you for the full purchase price plus any original shipping costs, subject to terms and limitations. If you are charged for a transaction that you didn't make, let us know within 60 days, and we've got you covered.
30 Days Money-Back Guarantee
We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost. No restocking charges. Any additional fees associated with a purchase transaction will be deducted from the amount of the refund.
24-Month Extended Warranty Service
If you purchase products from our website, you have 24 months to request repairs or replacement if any products turns out to be faulty or are not as advertised. During the warranty period if any product is found to have a manufacturer defect, we will repair or replace the defective part(s). If a product cannot be repaired or replaced within a reasonable time, you can request a refund or price reduction. We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost.
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