SKU: 32330325573

Cyrusher Zenith Step-Over All-Terrain Fat-Tyre Electric Bike 250W

$584.55 $649.50
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Description

Cyrusher Zenith Step-Over All-Terrain Fat-Tyre Electric Bike 250WDESCRIPTION WHO THIS BIKE IS FOR confident step over riders mixed road and trail rides gravel paths and parks hilly commutes weekend adventure routes year round rough road riding A capable e bike for riders who want freedom beyond smooth tarmac. ABOUT THIS BIKE The Cyrusher Zenith fat tyre e bike feels steady, adventurous and controlled from the first ride. The step over frame gives it a bold, planted feel. The 250W motor supports riding up to 15. 5

DESCRIPTION


WHO THIS BIKE IS FOR

✅ confident step-over riders

✅ mixed road and trail rides

✅ gravel paths and parks

✅ hilly commutes

✅ weekend adventure routes

✅ year-round rough-road riding

A capable e-bike for riders who want freedom beyond smooth tarmac.

 

ABOUT THIS BIKE

The Cyrusher Zenith fat-tyre e-bike feels steady, adventurous and controlled from the first ride. The step-over frame gives it a bold, planted feel.

The 250W motor supports riding up to 15.5 mph on UK roads. Its 52V 15Ah LG battery helps extend mixed daily and weekend rides.

Fat tyres, hydraulic braking and switchable sensors make the ride feel capable and predictable.

 

WHY RIDERS LOVE THIS BIKE

✅ feels planted on rough surfaces

✅ grips well on gravel and uneven roads

✅ switches between relaxed and responsive riding

✅ helps longer rides feel smoother

✅ gives strong step-over adventure presence

 

KEY FEATURES, REAL BENEFITS

✅ 26 x 4.0 Inch Chaoyang Fat Tyres: add grip and cushioning across rougher surfaces

✅ 52V 250W Motor with 80 Nm Torque: confident support for hills and heavy starts

✅ Front and Rear Suspension: helps smooth gravel, potholes and uneven paths

✅ 21 Inch Aluminium Step-Over Frame: stable handling for confident adventure riding

✅ 52V 15Ah LG Battery: 780Wh capacity for longer mixed-use riding

✅ 180 mm Logan Hydraulic Disc Brakes: controlled stopping with 2-piston calipers

✅ Torque and Cadence Sensor: switch riding feel between responsive and relaxed support

✅ Shimano 7-Speed TY500 Drivetrain: smooth gear changes for varied routes

✅ Front and Rear Lights: improve visibility for road and evening riding

✅ UK Road Legal Electric Bike: no licence or insurance needed, ride on roads and cycle paths

 

VIDEOS

 

SPECIFICATION

PERFORMANCE

  • Range: Up to 60 miles / 97 km *
  • Motor: 52V 250W motor with 80 Nm torque
  • Maximum Assisted Speed: Up to 15.5 mph / 25 km/h
  • UK Road Legal Electric Bike: no licence or insurance needed
  • Power Assist: Pedal assist with 5 assist levels

 

ELECTRICAL COMPONENTS

  • Battery: LG 21700 52V 15Ah 780Wh
  • Charging Time: 7 to 8 hours
  • Charger: 2A
  • Display: mid-mounted colour LCD display
  • Front Light: ultra-bright front light
  • Rear Light: rear brake light

 

BUILD

  • Frame: aluminium step-over frame
  • Frame Size: 21 inch
  • Fork: coil spring front suspension
  • Suspension: front suspension with lockout and rear spring suspension
  • Brakes: 180 mm Logan hydraulic disc brakes with 2-piston calipers
  • Tyres: Chaoyang 26 x 4.0 inch fat tyres
  • Wheelset: 26 inch wheelset
  • Water Resistance: IPX5, with some parts IPX7

     

SIZE & FIT

  • E-bike Weight With Battery: 34.3 kg
  • Battery Weight: 4.5 kg
  • Payload Capacity: 150 kg
  • Recommended Rider Height: 5'1" to 6'2" / 155 to 190 cm
  • Reach: 18.5 inch / 47 cm
  • Head Tube Length: 5.5 inch / 14 cm
  • Head Tube Angle: 68.5 degrees
  • Wheelbase: 47.6 inch / 121 cm
  • Total Length: 76.4 inch / 194 cm
  • Minimum Seat Height: 32.3 inch / 82 cm
  • Maximum Seat Height: 40.4 inch / 102.5 cm
  • Stand Over Height: 30 inch / 75 cm
  • Handlebar Width: 27.6 inch / 70 cm 


TRANSMISSION

  • Number of Gears: 7 speed
  • Rear Derailleur: Shimano TY500

 

* Quoted battery range is an estimate based on riding in medium assist mode. Actual performance will vary depending on factors such as assist level, rider weight, terrain, temperature, wind and riding style.


IN THE BOX

  • Zenith e-bike
  • Battery charger
  • User manual
  • Toolkit box
  • Keys

 

SIZE GUIDE

 

  • Reach: 18.5 in / 47 cm
  • Head Tube Length: 5.5 in / 14 cm
  • Head Tube Angle: 68.5°
  • Wheelbase: 47.6 in / 121 cm
  • Total Length: 76.4 in / 194 cm
  • Min Seat Height: 32.3 in / 82 cm
  • Max Seat Height: 40.4 in / 102.5 cm
  • Stand Over: 16.5 in / 42 cm
  • Handlebar: 27.6 in / 70 cm

DELIVERY

FREE & FAST DELIVERY

Delivery time is between 4-7 working days from the date you placed your order. 

Once your order has been placed, assuming it is in stock and available for dispatch, we will charge your card and your order will be dispatched within 5 working days. We will send you tracking details by email within 48 hours of your order being dispatched. If you have not received tracking details within 6 working days, please reach out to us via email at [email protected] so that we can help.

Please note that deliveries to locations outside the UK mainland may take longer and may be subject to additional charges. Please get in touch with us for a personalised delivery quote.

 

MISSED DELIVERIES

Once your order is ready for dispatch, either we or our designated courier will contact you via email, telephone or SMS with tracking information and where applicable, to arrange a suitable delivery window. Please ensure that someone is present at the specified delivery address to receive and sign for your item. If you need to reschedule your delivery, we kindly ask that you notify us or the courier as soon as possible.

Please be aware that once a delivery slot has been confirmed, we cannot guarantee changes can be accommodated without sufficient notice.

Important: If a delivery attempt fails and a new date or time must be arranged, you may be liable for paying the redelivery cost. For e-bike deliveries to mainland UK, this charge is typically approximately £75 + VAT.

Please see full details of our Shipping & Delivery Policy here

 

ASSEMBLY

Every Cyrusher e-bike arrives securely boxed and 90% assembled and undergoes a thorough pre-delivery inspection (PDI) to ensure it arrives in perfect condition. The brakes, gears, electrics, tyre pressure, and overall assembly are carefully checked.

Any post-delivery assembly requires minimal bicycle knowledge and skills. Detailed instructions and all the necessary assembly tools are included in the box.

Once delivered, simply fit on the handlebars, front headlight, front wheel, and pedals and then you're ready to ride!

Please see the unboxing video here


WARRANTY & SUPPORT

MANUFACTURER'S WARRANTY

Excellent aftercare comes as standard. This electric bike comes with a comprehensive warranty, so you can ride away with complete peace of mind.

  • Frame: 2 years
  • Battery: 1 year
  • Parts: 1 year

 

Please note: This warranty does not cover consumable parts and regular wear and tear, damage from accidents, incidental damages or any usage outside the operational guidelines provided in the user manual. 

This warranty only applies to the original owner of a Cyrusher bike and is limited to the replacement of defective parts. Cyrusher covers the cost of the replacement, the buyer is responsible for the shipping cost.

For more details, please contact us at [email protected]

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32330325573

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Verified Purchase
Harry
Charlottesville, US
★★★★★ 5
Helpful to a beginner...
Format: Paperback
It is very nice to read and the book has a good design. I read it and I just learned some couple things. Thanks Roblox!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2022
A
Amazon Customer
Birmingham, US
★★★★★ 5
Great book
Format: Paperback
Got this for my son and helped him finish coding his game although it takes some time to learn it I definitely recommend this book
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 21, 2024
T
Verified Purchase
Tyler Backus
Battle Creek, US
★★★★★ 1
Out of date and just plain not good instruction
Format: Kindle
This has problems that I have seen from many non-educators when they write an instructional book (so I hope she is not an actual educator). The book makes leaps of faith of knowledge and has a belief that they have shown you well enough to do one thing (which it doesn't) and that you can extrapulate from that knowledge to do something completely different. They makes these leaps of faith in the first couple hours, when people are just getting used to coding in this language. This book also fails to even tell you what different parts of the code are doing, so that you can make those leaps of knowledge. I also find this happens a lot when people write coding books. They know how to code, so they figure if they just show you parts of a code you will figure out why it did what it did, instead of explaining to you what different parts of code actually do when you put them together. I made it almost through hour two before I gave up trying to decipher all the nonsense that was written in this book. In hour two they have you make a sphere, but never actually show you how to make the sphere, but then start telling you how to create dialog for the sphere. Apparently in hour 1, even though it was never explained, I was supposed to understand how to make a lava field with objects.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2024
J
Verified Purchase
Josh D
Charlottesville, US
★★★★★ 5
Must-read book for everyone (not just Ai proponents)
Format: Paperback
I realize I say this about every AI book I read, but this one really is the best (so far), and most important in my view."Atlas of AI" by Kate Crawford is a well-researched work that should appeal to AI enthusiasts and opponents alike; not because it flatters either side, but because it challenges both to think beyond the usual narratives. Whether you see Ai as a revolutionary tool for progress or a dystopian force of unchecked power, there’s no denying that it it is shaped by real-world systems of labor, industry, and politics.This book makes it clear: Ai is not just about algorithms and efficiency. It is about power: who wields it, who profits from it, and who is left to bear its costs. For those who celebrate Ai’s potential (like me), Atlas of AI offers a sobering look at the material and ethical realities behind the inertia and hype.For those who critique AI as a damaging or dystopian force, the book provides a well-researched (eye-opening) foundation for those concerns.What makes it especially compelling is that it doesn’t fall into the trap of alarmism OR blind optimism. Instead, Crawford takes us on a deep, methodical journey through the infrastructures that sustain artificial intelligence, revealing the hidden costs (labor, environmental, political) that come with EVERY so-called innovation.**Deconstructing the Myths of AI**One of the book’s greatest strengths is its ability to cut through the persistent myths surrounding artificial intelligence. Crawford systematically dismantles the notion that AI is a purely immaterial, frictionless technology. She examines the vast mining operations necessary to produce hardware, the exploitative labor practices behind data annotation, and the enormous energy demands of AI training model. Ai, in her analysis, is not an autonomous or inevitable force—it is an industrial system deeply intertwined with capitalism, surveillance, and environmental degradation (much of her research applies to Big Tech, and not just Ai). This perspective is crucial in an era where Ai is often presented as a revolutionary technology that exists outside of history and politics.Crawford makes it clear that Ai is not “just math” but a political tool wielded by those in power, often reinforcing existing inequalities. The Ethics of Extraction and Control: One of Crawford's most compelling arguments is the framing of AI as an extractive industry: one that harvests resources, labor, and data in much the same way as colonial enterprises have in the past.The book traces how Ai development is dependent on resource-intensive practices, from lithium mining for hardware to the invisible armies of low-wage workers tasked with cleaning and labeling data. Crawford argues Ai is a system built on the extraction of value from the most vulnerable populations, whether they be gig workers, Amazon's "Mechanical Turk" laborers, or the communities living in the shadow of server farms that consume enormous amounts of water and energy.Crawfors cites numerous examples of how corporations like Google and Amazon, and even the government, skirt the system to save on taxes, while promising better futures to the resource-rich communities they exploit. The theme of extraction extends beyond the physical to the digital realm.Crawford shows how personal data is commodified under the guise of “training AI,” reinforcing the asymmetrical relationship between those who generate data and those who profit from it.The book’s critique aligns with broader concerns about surveillance capitalism, demonstrating how Ai is often wielded as a means of control rather than liberation. (I learned some sad truths about local community policing and Ai) AI and the Politics of Classification Crawford explores how classification systems, often presented as objective/neutral, are deeply embedded with biases. Ai systems are trained on datasets shaped by human prejudices, yet are frequently deployed as infallible arbiters of truth. Crawford examines how facial recognition, predictive policing, and automated hiring systems encode and reinforce racial, gendered, and socioeconomic biases, often amplifying systemic discrimination. This analysis is particularly relevant in today’s discussions on AI ethics. Crawford’s work underscores that Ai bias is not simply a technical glitch to be fixed, but rather a feature of the broader political and economic structures that Ai is designed to serve. A Necessary and Timely Intervention For those who have followed debates on Ai ethics, surveillance capitalism, and data justice, Atlas of AI provides a well-researched and compelling synthesis of these concerns, free from the noise we commonly hear on social media outlets. It is particularly valuable in challenging the mainstream, corporate-driven narratives that portray Ai as an inevitable and benign technological force. Crawford’s writing is insightful, well-documented, and accessible, making complex ideas understandable without sacrificing depth. While the book is critical in tone, it does not merely scold Ai developers; rather, it offers a crucial intervention in ongoing discussions about how Ai is developed, deployed, and governed.The book had a surprisingly anti-capitalist/anti-technocratic tone, that inspired me to continue learning/aligning under the anti-fascist flag so many of us wield. For artists, researchers, and technologists (especially those working at the intersection of Ai and creative expression) Atlas of Ai serves as a stark and vital reminder that technology is never neutral. It invites us to think critically about the systems we engage with and the ethical implications of our participation in Ai-driven ecosystems (and really, all major technologies). Atlas of AI is an essential read for anyone interested in understanding the broader implications of artificial intelligence beyond the hype. It moves beyond discussions of algorithms and model accuracy to examine the power structures that shape Ai’s impact on society. By reframing AI as a material and political phenomenon rather than a disembodied technological marvel, Crawford provides a necessary course-correction to the dominant narratives surrounding Ai. This book is not just for AI skeptics but for anyone who wants to engage in a deeper, more nuanced conversation about the technology shaping our present and future. If we are to meaningfully confront the challenges AI presents, we need more books that challenge us to think critically, demand accountability, and advocate for more just and equitable technological futures. For those of us who engage with AI,whether as artists, researchers, developers, or critics, Atlas of AI should serve as a wake-up call. Too often, Ai artists defend the technology out of pride or personal investment, dismissing valid ethical concerns as fear-mongering. On the other side, anti-AI voices often resist engagement with nuance, preferring to frame Ai as an existential threat rather than a tool shaped by human systems of power. Both of these stances miss the point. Crawford makes it clear that the real battle isn’t Ai vs. artists or progress vs. tradition, it’s about who controls the technology, who benefits from it, and who is left to suffer the consequences. If we are serious about the future of art, technology, and creative autonomy, we must move beyond our egos and engage critically with the systems that shape Ai. This book gives us all a foundation to unify under, not in opposition to Ai itself, but in opposition to the unchecked power structures that exploit it and us.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2025
J
Verified Purchase
Jeff Jenner
Carnegie, US
★★★★★ 5
I wish Americans could read Kate Crawford’s book
Format: Kindle
It is a sad bit of irony that the “information revolution” has created a society in which the vast majority of Americans don’t know where their food or water come from. “I don’t get all this talk about drought. You just turn on the faucet and get all the water you want.” It’s no wonder that we’ve created an entire generation of Americans who have no idea where their computing resources come from. “I don’t get all this ‘cost of AI’ talk. ChatGPT is free. Just open your iphone and it will answer any question you have.” While Crawford’s Atlas of AI is a bit sesquipedalian, it is a comprehensive, well-organized, impeccably researched story of where all our miraculous computing power actually comes from. For all the Doomer talk of AI someday making humans extinct, Crawford shows that the way the most powerful American corporations are implementing AI is ALREADY causing vast harm to humans globally, and it will only continue to get worse. Not from some mythical science fiction robot suddenly becoming smarter than people, but from mass ignorance of the slow but steady human-driven global natural resource depletion and exploitation of the most vulnerable people. It’s doubly sad that our polarized culture war politics prevents most Americans from asking the critical questions that Crawford explores in her journey through the landscape of AI creation and production. This book is neither Marxist nor anti-capitalist. It simply argues that, just like there are better ways of managing our water and food resources, there is a better way to manage our computing resources—the first step being a common understanding that there is a natural resource and human cost to every floating point operation that a computer performs. I wish that Americans were able to read, understand, and appreciate such an important analysis of the biggest problem that will confront humans in the next few decades.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025

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