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Ordering from Engine-Lab

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Engine-Lab is a factory direct company, providing top quality Ebikes straight to consumers from the people who design, manufacture, and know them best.

Engine-Lab assembles and inspects every bike before shipment, with bikes shipped in a pre-assembled condition and the basic required hand tools included. Final assembly is designed to be as easy as possible for the end consumer, with most bikes taking less than 45 minutes to assemble and take on a first test ride. If you are completely unfamiliar with bikes and/or hand tools it may be best to consult a local professional for assembly help. Our online customer support team is here to help with any issues you may encounter with assembly, and provide replacement parts in the most timely manner possible in the event of shipping damage.


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In-stock Engine-Lab bikes ship within 1-3 days from our distribution center, with FedEx tracking numbers provided to keep you informed of shipment progress. Engine-Lab ships direct to consumers in North America only — for sales outside of North America please contact our support team for assistance. Shipping address cannot be changed after ordering to prevent fraud.

Order Cancellation

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Prior to order processing: Cancellations received after order confirmation but before shipping processing will be subject to a 3% processing and restocking fee.

After order processing or shipping: Cancellations received
after bicycle is processed for shipping or returned to sender upon delivery to
specified address will be subject to $250 fee.

If you would like to proceed with an order cancellation,
please contact customer service with your order number. 

Return Policy

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Engine-Lab bikes has a 14-day return policy. If within 14 days after receiving and assembling your bicycle you are not 100% satisfied you may contact our support team and request a return. Buyer is responsible to safely and securely disassemble and pack the bicycle and for return shipping costs and fees. Any damage in return shipping is the responsibility of the buyer. After the bike arrives and has been inspected you will be issued a 100% refund.

Returns are only available for customers ordering in the United States within the contiguous 48 states. Returns are not available on batteries or accessories.

Refound Policy Fine Print

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In order to undertake a valid return, you must obtain written approval for such return from Power Max Bikes Inc., which can be obtained by completing a request form or by contacting us at Any Products sent back to Power Max Bikes Inc. by you without the written consent
of Power Max Bikes Inc. shall be rejected and returned to you at your cost.

Purchased Product that have not yet shipped shall be subject to a ten percent (10%) processing fee.

EBIKES RETURNS. Full refunds within fourteen (14) days of delivery. To return an ebike that is not defective or damaged, you must contact Power Max Bikes Inc. within fourteen (14) days of your receipt of the ebike. The ebike must have less than ten (10) miles on the odometer, be free of any wear and tear, dirt, dust, fragrance, or any other signs of use and must be in the same packaging and condition that you receive it and must include all items that were inside the box (charger, keys, hardware, etc.). You must receive prior authorization and a prepaid return shipping label from Power Max Bikes Inc.. Any warranty issues must be resolved prior to processing a return. Returns are not allowed after fourteen (14) days of the delivery date.

1. Pre-Orders and Backorder and Pre-order/Backorder Cancellations. Our backorder process is for Ebikes that already been available but are temporarily out of stock. For all pre-orders and backorders, your credit/debit card will be charged immediately. There will be no delay in payment collection, regardless of when the item is expected to ship.

2. Accessory and Replacement parts. Any accessory or receipt of a replacement part under the Limited Warranty shall be eligible for return within thirty(30) days of receipt. Any returned accessory or replacement part must be unused, free of any wear and tear, dirt, dust fragrance, or any other signs of use and must be sealed and unopened in the same packaging and condition in which you received it.  You will be responsible for paying for shipping both ways and will be subject to a twenty percent (20%) restocking fee.

3. Non-returnable/non-refundable Items. Used Products, batteries, special orders, sale items, gift cards and gifted orders shall not be returnable except in EXTREME cases of breakage/malfunction covered by our warranty, and then only after receipt of our approval for the return. “Built and Delivered” fees are nonrefundable.

4. Refunds
1. Any item returned with an order that used a discount code will have the entire discount code value subtracted from the refund value, whether you return one ebike or multiple ebikes.

2. Refunds will be made after the Ebike is received and inspected.


Engine-Lab Warranty

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Each new Engine Lab electric bike comes with a limited manufacturer’s warranty for original retail purchaser. This warranty provides original retail purchaser of Engine Lab eBike with a warranty against manufacturer’s defects only.

Warranty claims only for initial faults that were already present at the time when handover. Engine Lab grants a 1-year guarantee for manufacturing defects only for the original owner only.

If your product is shipped to you and arrives damaged, please contact us directly by phone or e-mail within 2 working days from the date of delivery. Please note that any damage caused by shipping is not covered by warranty, however a claim may be filed with the shipping company and we will work together to resolve damaged goods on arrival.

Minor scratches to components don't necessitate replacement or any refund, but for major aesthetic damage a credit may be issued, or replacement sent if the item is functionally damaged. We will not cover any damage caused when owner sets up their own shipping option including using a freight forwarding or similar service.

Engine Lab Bikes reserves the right to determine if the product has been operated in accordance with the products intended use and whether user error and or neglect is the cause for the product damage or failure. We may require video and photographic submissions to review each warranty claim.

Warranty shall be effective only if all the following conditions are met:

If the bike was purchased directly from .

If you are the original owner of the bike (warranty is not transferable)

If the bike has followed all intended use purposes

If the electronics have not been repaired or modified.

It is important to understand that damages caused by improper assembly are not covered by the warranty.

Please watch our assembly video and read about common mistakes on our support page before attempting assembly. These links will always have the most up to date tips:

Commonly occurring mechanical issues due to improper assembly:

Failure to adjust disc brake rotor/calipers correctly

Failure to install pedals onto crank arm properly

Failure to install front wheel correctly

Failure to install handle bar stem with front fork correctly

Failure to install seat post correctly

Failure to reinstall rear wheel correctly (rear wheel comes installed - applicable only in cases of rear wheel removal)

If you self-assemble, you are operating your eBike under the pretense that the mechanical connections were installed/assembled safely and securely. Ride safely under the assumption of risk that all mechanical components have been checked thoroughly.

Rider and purchaser is 18 years of age or over and possesses the legal capacity and authority to purchase and ride an eBike.

The bike is ridden only on paved roads and trails. Using the bike for any other purpose may result in serious injury.

Maximum total weight of rider including any cargo is at all times below 275lbs.

Warranty Exclusions

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The warranty applies only to customers purchasing in the contiguous United States. Engine Lab Bikes may change the terms.

This warranty DOES NOT COVER the following

Normal wear and tear from use or exposure to the elements.

Damage or failure from abuse, neglect, misuse, or accident.

Damage or failure from modification of any of the bikes systems.

Damage or failure of any part of the electrical system resulting from improper storage or charging of the battery.
Improper charging of the battery could cause serious external damage to persons or property.

Installation of any 3rd party parts,
accessories, or electrical components.

Lost or damaged keys to the bike are not covered by warranty.

All warranties are void if used for any purpose other than the reasonable intended use.

How To Handle Warranty Claims

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Engine Lab Bikes will cover labor and parts within the 30-day period after purchase. Our credit for labor is based on a standard fee for bike repair and could be higher or lower than the cost at your local bike shop. You must wait for us to ship warrantied component rather than replacing on your own. Please allow 1-3 weeks for shipping replacement components.

It is the owner’s responsibility
to immediately inspect your bike on receipt, within 3 days. To quickly resolve the issue the owner must send an email with a photo and/or video if appropriate to We will make any necessary repairs to remedy the situation.

After 30-day free repair period Engine Lab Bikes will ship replacement parts within the year at no charge.  The owner will be responsible for labor. Warranty parts will be shipped in the U.S. only at our cost. It will be necessary to send an email with a photo and or video as appropriate to

We reserve the right to make judgement determinations of proper use based on the evidence provided and may require additional photos and or videos of the item or issue in question.


Engine-Lab Bicycle Sizing and Stem Adjustment

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Engine Lab bikes feature different frame sizes and configurations to fit a wide variety of body types, with adjustable touch points to fine tune the final fit. Please consult the fit chart on each
bicycle model page for the recommended height range. The geometry chart on each
model page is designed to help easily understand the size of each bike, with minimum and maximum seat height and standover height (the height of the top-tube in the center of the bike where you would “stand over” the bike) called out. Engine-Lab bikes feature traditional roughly horizontal top-tube
frames and step-thru frames that allow you to mount and dismount without lifting your leg over the bike as high.

Seat Height: For pedaling efficiency and proper fit it is best that the seat height is adjusted so that when the pedal is in the 6 o’clock position (completely down and the bottom of the pedal rotation) that the knee remain only slightly bent.

Stem Adjustment: Engine-Lab E450 models are equipped with an adjustable stem to fine tune your most comfortable fit.

Step 1

1.Use 6mm hex key to loosen side adjusting bolt.

2.Adjust stem angle to the position you desired.

3.Use 6mm hex key tighten side adjusting bolt to required torque of 18Nm.

Step 2

1.After adjusting stem to desired angle , use 4mm hex key to loosen 4 bolts on handle bar stem face plate and rotate handle bar to a comfortable position, recommended as horizontal to the ground or angled slightly down, no more than 5º.

2.Tighten 4 stem face plate bolts with 4mm allen key to required torque of 6Nm. Always tighten bolts in X sequence as shown.

Disc Brake Noise or Rubbing

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Disc brakes are powerful and reliable with minimal maintenance, but can require adjustments after wheel removal/installation and as the brake pads wear. It is important to center the disc rotor in the caliper upon initial installation.

Disc brakes often make noise during normal operation, on long descents, and when momentarily contaminated with water or dirt. Loose calipers or rotors, oil contaminants, or poor caliper alignment may cause noise and poor performance.

If you are in need of assistance please sent us images and videos of the problem at

Rear Wheel Removal / Installation

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When re-installing your rear wheel, make sure it is fully seated in the dropouts and stays in place as you tighten the axle nuts. This is critical for safety.

Once re-installed, please ensure motor cable connector connected and pushed into the female connector completely. Verify your motor cable is routed properly to avoid damage or premature failure.

Belt Drive Maintenance

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The Engine-Lab E450 is equipped with a grease and oil free belt drive that is rated for years of use with proper maintenance.

Rack Weight and Cargo Limits

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The Engine-Lab E450 is equipped with a built in rear rack that can support up to 55 lbs and a front rack that can support XX lbs. These racks re not compatible with child carriers of any kind. Do not use these racks to transport people or animals.

Electrical Motor: Pedal Assist vs Throttle

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Pedal Assist:  Pedal assist utilizes sensors that acknowledge your pedaling to provide motor assist. The Engine-Lab E450 uses a frame mounted cadence sensor to measure pedal speed and adjust motor assist level. Simply spinning the cranks will apply a given amount of assistance.

Throttle: In addition to pedal assist, the E450 features a right hand thumb throttle. Throttle can be applied at any time, from a standstill or while pedaling up to a maximum speed of 20 mph.

Battery Charging

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The Engine-Lab E450 ships with a wall plug fast charger that will provide you will a full charge overnight. You can charge the battery with it either mounted in the frame ready to ride, or on its own outside of the bicycle at your convenience.

Water Resistance

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The Engine-Lab E450 is water
resistant rated IP-65. The bike is not waterproof, and we do not recommend leaving the bicycles out in the rain, but the E450 can handle water exposure during normal use. It is important to check that the charge port cover is closed. Failure to do so will allow water/ moisture to enter the charge port which can then destroy your battery and or cause bodily harm when the charger is plugged in.

Battery Take Off / Put In Instruction

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Twist handle bar 20-30 degrees.

1. Hold bottom of battery with your hands and press against frame. Unlock the battery by rotating counter clockwise with your key.

2. Push and hold the release lever, and the battery will drop down.

3. Hold battery and move downwards first to let battery rotate off frame dock in the front, move forward and pull battery out from slot.

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