Sur Ron Ultra Bee 21KW

2025 Surron Ultra Bee – Next-Generation Electric Dirt Bike

Motor: 18kW high-torque motor (21kW with Turbo Mode)
Top Speed: 59 MPH
Range: Up to 71.5 miles (at ~31 MPH cruising speed)
Battery: 74V 60Ah high-capacity lithium pack
Torque: 377 ft-lbs of wheel torque
Charging Time: 2.5 hours (20%–80%)
Power Modes: Eco / Daily / Sport / Reverse / Turbo
Brakes: DOT-approved four-piston hydraulic brakes
Weight: Slightly increased by 8 lbs for added strength and performance

Key Performance Upgrades:
The Ultra Bee rockets from 0–31 MPH in just 2 seconds, with a dedicated Turbo Button unleashing an incredible 21kW of peak power. Its Crawling Function provides superior control for technical trail riding. A redesigned MTPA/MTPV controller ensures efficient power delivery, while a massive 74V 60Ah battery offers extended range. The new optimized gold front fork improves rigidity by over 50% and damping response by 30% for a smoother ride.

The updated primary transmission features a carbon fiber belt with forged pulleys and tungsten carbide coating, improving belt life by 60% and tripling surface hardness. The new Hairpin motor winding technology provides better efficiency and faster heat dissipation, allowing longer rides under extreme conditions.

Ultra Bee T NA-25 Version Highlights:

• Blazing 0–31 MPH acceleration in 1.1 seconds
• Drive wheel torque of 376.9 ft-lbs
• Optimized front fork for superior stability
• Advanced hydraulic buffer system for enhanced impact resistance
• New custom 18" rear wheel set with gold accents
• Balanced lightweight frame design for improved agility

Electronics & Assistance Functions:

• SRTC and BERS riding assist systems
• Adjustable throttle curve with three levels
• GPS terminal for app connectivity (if available)
• Adjustable charging parameters: L1 (425W), L2 (765W), L3 (1100W)

Performance Specs:

• 0–18.7 MPH: 1.1 sec
• 0–31 MPH: 2.0 sec
• 0–43.5 MPH: 3.1 sec

Warranty Information

14-Day Manufacturer Defect Guarantee
Within 14 days of delivery, we will replace any part found to be defective due to manufacturing issues.

12-Month Limited Warranty

• Power System (motor, controller, display, battery): Covered for 12 months from the delivery date.
• Frame & Chassis Components (chassis, swing arm, and non-wear parts): Also covered for 12 months.
  Wear-and-tear items such as tires, brake pads, and chains are not covered.

Submitting a Warranty Claim

To process a claim, you’ll need to provide:

• Proof of purchase (receipt or order confirmation)
• Photo or video evidence of the defect

Our technicians will assess the issue and, if confirmed, we will send the required replacement part at no cost. Please note:

• Diagnosis may require multiple submissions of documentation.
• No additional compensation or parts beyond the confirmed repair will be issued.
• Lack of adequate documentation may prevent us from fulfilling the claim.
• In some cases, you may need to work with a local technician authorized by Emoto Superstore to complete the repair.

We encourage you to carefully review these terms before completing your purchase.

Warranty Exclusions

Our warranty does not cover the following:

Normal Wear and Tear
Components that naturally degrade over time and use, including but not limited to:

• Tires
• Bearings
• Seals
• Chains
• Brake components
• Suspension components

Damage Due to Misuse or Neglect
We do not cover failures caused by:

• Accidents or collisions
• Improper installation or setup
• Lack of regular maintenance
• Negligent operation
• Use for racing or competitive purposes
• Unauthorized modifications, including wiring alterations or installation of non-genuine parts

Battery Coverage
Battery performance is subject to natural degradation over time. The battery is only covered under warranty if its capacity drops below 65% of original capacity within the warranty period. Any misuse related to charging, discharging, or storage will void warranty coverage.

Service & Assembly Costs

• Assembly costs and labor fees are not covered under warranty.
• Replacement parts are provided at no cost if covered by warranty, but installation is the responsibility of the customer.
• We do not offer reimbursement for third-party repair or assembly services.

Ownership & Transferability
Warranty coverage is non-transferable and only applies to the original purchaser. A valid proof of purchase from Emoto Superstore is required for all warranty claims.

                        Dimensions & Weight 

Length:                                                             81.10"

Width:                                                               34.64"

Height:                                                              46.37"

Min Ground Clearance:                                   12.51" 

Wheelbase:                                                       54.33"

Seat Height:                                                      35.82"

Front Fork Travel:                                              9.44"

Rear Shock Travel:                                        85/9.44

Frame:                                 forged aluminium alloy

Off-road Tires:                       F80/100-19 R100/90-18 

Vehicle Weight:                                                194lb

Max load capacity:                                 320.462lbs

Most of our items are eligible for our 14 day refund policy. If your product is faulty, damaged, or missing parts on arrival, you can send it back to us for a refund or item exchange within 14 days of receiving it. Please note, customers are responsible for the cost of return shipping. The return shipping amount will be deducted from the refund issued. 

An unpacking inspection is required before you sign for it. If you are not able to unpack the goods at the first time, an unboxing video is highly recommended to prove any shipping damage. If a bike has a minor cosmetic issue (such as a scratch, or chip on the paint), we will attempt to come to a reasonable discount but this is not grounds for warranty replacement or for a return once you signed for it.    

Time frame for refunds:

Refunds may take up 3-6 weeks to be shipped back to our supplier and then an additional 5-7 business days to process once we have inspected your product. 

How to contact us for a refund

To start a return, you can send us an email at info@emotosuperstore.com. Please Include pictures and a detailed description of the problems your experiencing with your product. If your return is approved & accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package.

Please note the customer is responsible for all return shipping costs. 

Eligibility for all refunds

You may return most new, unused items within 14 days of delivery for a full or partial refund of product cost (minus shipping and any other fees for restocking or damaged parts). Because the nature of our items we always start return eligibility from the date of delivery.  

To be eligible for a return, your item must be in unused condition, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. Before a return is sent, the customer must have written approval from Emoto SuperstoreIf a customer sends a return without written consent from Emoto Superstore, a refund will not be issued, and the customer will have to pay shipping to get the item returned or sacrifice the item.

You can always contact us for any return question at info@emotosuperstore.com 

* To be eligible for a return, your item must be unused and in the same condition you received it. 

* It must also be in the original packaging. 

* To complete your return, we require a receipt or proof of purchase.

* To be eligible, the item must be faulty or damaged. We do not accept refunds if you change your mind.

* If you did not receive your item/s 90 days after ordering and have your order number and proof of purchase. 

* If you payed full retail price for your item/s. *Sale items are not eligible for refunds. If an item is discounted, it cannot be refunded.*

Shipping & Compliance Notice

Shipping: We ship from the USA within 2–3 business days (excluding holidays). Most orders arrive in 5–7 days. A signature is required at delivery for added security. Transit times are estimates, not guarantees; delays may occur due to severe weather, carrier volume, or high product demand.

Compliance: The SURRON ULTRA BEE  is sold for off-road use only. It is speed- and power-limited to comply with applicable federal, state, and local laws. Do not bypass these restrictions or modify the unit to increase speed or power. The buyer is solely responsible for proper use and for ensuring compliance with all laws in the region where the product is operated.