Mokwheel Obsidian vs. Trek Powerfly FS 4 Gen 3: Full Suspension Ebike Showdown

share this story :

The allure of electric mountain bikes (eMTBs) with full suspension is undeniable, captivating cycling enthusiasts and adventurers alike. With their unmatched ability to conquer rugged terrains and provide a smoother ride, it's no surprise that they're soaring in popularity. Among the frontrunners in this revolution are two standout models: the Mokwheel Obsidian and the Trek Powerfly FS 4 Gen 3, each promising an unparalleled off-road experience. Let’s dive into what makes these bikes the top choices for trail enthusiasts.

What is a Full Suspension eBike?

Full suspension eBikes feature shock absorbers at both the front and rear, providing a cushioned ride no matter the terrain. This design significantly reduces the impact on the rider, improves traction, and enhances control, making for an altogether more comfortable and enjoyable journey.

Is it Worth Getting a Full Suspension eBike?

Absolutely. The benefits of investing in a full suspension eMTB include superior comfort, increased control, and the ability to tackle a wider range of terrains with ease. Whether navigating rocky paths or descending steep trails, these bikes are built to handle challenges that might intimidate others.

Tech Specs: Mokwheel Obsidian vs. Trek Powerfly FS 4 Gen 3


Mokwheel Obsidian

Trek Powerfly FS 4 Gen 3




Solar charging







60~80 miles



1000W Brushless Rear Hub Motor

Bosch Performance Line CX, smart system, magnesium motor body, 85 Nm




Payload Capacity

400 lbs

300 lbs

Fat Tires

Yes, 26” x 4.0” Puncture Resistant Fat Tire

No, 27.5x2.35''; 29x2.30''

Suspension Fork

130mm adjustable


Bike Frame

6061 Aluminum Alloy

Alpha Platinum Aluminum


Hydraulic Brakes

Hydraulic Brakes


Torque sensor

Integrated speed sensor

Detailed Comparison: Mokwheel Obsidian vs Trek Powerfly FS 4 Gen 3

Price and Value

The Mokwheel Obsidian is priced at an accessible $2,199.00, making it an appealing option for riders seeking value without compromising on features. On the other hand, the Trek Powerfly FS 4 Gen 3 commands a premium price of $4,749.99, reflecting its brand reputation and advanced engineering. The question of value, however, extends beyond the initial purchase price, encompassing aspects like features, performance, and overall riding experience.

Mokwheel Obsidian - full suspension electric mountain bike

Innovation in Charging: Solar Capability

One of the standout features of the Mokwheel Obsidian is its solar charging capability, a pioneering feature that promises enhanced convenience and eco-friendliness for riders. This option is notably absent in the Trek Powerfly FS 4 Gen 3, positioning the Obsidian as a forward-thinking choice for riders who prioritize sustainability and autonomy from traditional charging methods. Mokwheel's innovative series of solar-charged electric bike models also includes the Basalt, Basalt ST, and Scoria.

Power and Performance

The heart of any electric bike is its motor and battery system. The Mokwheel Obsidian boasts a powerful 1000W brushless rear hub motor paired with a 48V19.6Ah battery, enabling it to reach speeds up to 28mph and offer a range of 60 to 80 miles. The Trek Powerfly FS 4 Gen 3, while equipped with the renowned Bosch Performance Line CX motor and a 500Wh battery, offers a lower top speed of 20mph. This difference underscores the Obsidian's emphasis on power and range, making it an attractive option for those seeking to push the limits of their adventures.

Load Capacity and Terrain Adaptability

With a total payload capacity of 400 lbs, the Mokwheel Obsidian is built to accommodate heavier riders or those who like to pack extra gear for long expeditions. The Trek Powerfly, with a 300 lbs capacity, may suit lighter riders or those who prefer less cumbersome loads. Furthermore, the Obsidian's 26” x 4.0” puncture-resistant fat tires provide superior traction and comfort across diverse terrains, compared to the narrower tires on the Powerfly FS 4 Gen 3.

Suspension and Comfort

Both bikes are equipped with hydraulic brakes and offer high-quality suspension forks—130mm adjustable on the Obsidian and 120mm on the Powerfly FS 4 Gen 3. This slight edge in suspension for the Obsidian might translate to a smoother ride on more challenging trails.

Frame and Build Quality

The Mokwheel Obsidian and Trek Powerfly FS 4 Gen 3 both boast durable aluminum alloy frames, though their designs cater to different aesthetic preferences. The choice between the sleek, modern look of the Obsidian and the classic, rugged appeal of the Powerfly will largely depend on personal taste.

What is the Best Full Suspension Electric Mountain Bike?

When choosing the best full suspension electric mountain bike, the Mokwheel Obsidian stands out as an exceptional choice. This bike offers outstanding value, innovative solar charging capabilities, and superior power, making it the perfect option for adventurers seeking performance and versatility. The Mokwheel Obsidian is designed for those who crave thrilling rides and cutting-edge technology.

While the Trek Powerfly FS 4 Gen 3 is backed by a legacy of quality and reliability, it comes at a higher price point. This bike appeals to brand-conscious riders who prioritize craftsmanship and brand reputation. However, when comparing the two, the Mokwheel Obsidian's pioneering spirit and innovative features make it a standout option.

The decision between the Mokwheel Obsidian and Trek Powerfly FS 4 Gen 3 hinges on what you value most in a full suspension electric mountain bike. The Obsidian offers exceptional value, innovative solar charging, and superior power, making it ideal for adventurers seeking performance and versatility. The Trek Powerfly FS 4 Gen 3, while more expensive, is backed by a legacy of quality and reliability, appealing to brand-conscious riders who prioritize craftsmanship and brand reputation. 

Whether you're drawn to the pioneering spirit of the Mokwheel Obsidian or the esteemed pedigree of the Trek Powerfly FS 4 Gen 3, the trails await with promises of exhilaration and freedom.

Mokwheel Obsidian - full suspension ebike

What to Look for When Buying a Full Suspension Ebike

When you're in the market for a full suspension electric mountain bike (eMTB), it’s essential to consider several key factors to ensure you find a bike that matches your needs and preferences. Here are some critical tips to guide you in making an informed decision:

Determine Your Riding Style and Terrain

Riding Style: Are you into aggressive downhill riding, cross-country, or a mix of everything? Your riding style will significantly influence the type of full suspension eMTB that's best for you.

Terrain: Consider the typical terrain you'll be riding on. Bikes designed for steep, rocky trails may have different suspension and geometry requirements than those for smoother, flowy trails.

Motor and Battery

Motor Type: Look into whether the bike has a mid-drive or hub motor. Mid-drive motors are typically better for steep climbs and technical terrain due to their balance and efficient power use.

Battery Capacity: Measured in watt-hours (Wh), battery capacity will dictate how far you can go on a single charge. Consider your typical ride length and elevation gain to ensure the battery meets your needs.

Suspension Quality and Travel

Quality: Higher quality suspension components offer better control, comfort, and durability.

Travel: This refers to how much the suspension can compress. More travel (measured in millimeters) is beneficial for absorbing bigger hits on rough terrain, but less travel can make a bike feel more responsive on smoother trails.

Frame Material and Size

Material: The most common materials are carbon fiber and aluminum. Carbon is lighter and can absorb some trail vibrations but is typically more expensive. Aluminum is more affordable and durable but heavier.

Size: Ensure the bike fits you well. A poorly sized bike can be uncomfortable and hard to control. Test rides are invaluable for finding the right size.


Fat tires can offer better traction and a smoother ride on rough terrain, but they can also make the bike feel slower and more challenging to pedal on hard surfaces.


Hydraulic disc brakes are standard on full suspension eMTBs for their strong and reliable stopping power in various conditions.

Additional Features

Gearing: Look at the gearing options. Some eMTBs come with a traditional multi-gear setup, while others use a single-speed setup optimized for electric motor assistance.

Accessories: Consider what comes standard with the bike and what you might need to add, such as lights, mudguards, or a cargo rack.

Warranty and Support

Warranty: A good warranty can offer peace of mind. Look for coverage on the frame, components, and battery.

Brand Reputation and Support: Consider manufacturers with a good reputation for quality and customer service. Check reviews and ask for recommendations from experienced riders or local bike shops.


Full suspension eMTBs can be expensive, with prices ranging significantly based on features and quality. Determine your budget ahead of time, but remember that investing in a higher-quality bike can save money on maintenance and replacements in the long run.

By keeping these tips in mind, you'll be better equipped to find a full suspension electric mountain bike that meets your expectations and enhances your riding experience.


The Mokwheel Obsidian and Trek Powerfly FS 4 Gen 3 represent the pinnacle of full suspension eMTB design, each with its unique strengths. The Obsidian impresses with its value, power, and innovative features like solar charging, while the Powerfly boasts premium build quality and brand reputation. Your choice depends on what you prioritize: cutting-edge technology and value, or premium craftsmanship and brand trust.

Eager to elevate your trail adventures? Explore the Mokwheel Obsidian and latest deals, diving deeper into the world of full suspension electric mountain bikes. Happy riding!

Always hear it first
Join our newsletter and be the first to hear about our special offers, latest products and all Mokwheel related news.
15-Day Returns
Need help? We're here for you
"Better than the best" - Mokwheel