To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
The 2020 Trek Powerfly 4 Women’s Electric Hardtail Mountain Bike in Battleship is Trek’s entry level electric mountain bike. It's built with parts that hold up, like a dependable 9-speed Shimano drive train.

2020 Trek Powerfly 4 Women’s Electric Mountain Bike Battleship


With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

You Pre-Order is prioritised (at no additional charge); meaning that, as soon as the product arrives with us, we can wrap it straight back up and get it sent out to you - it often never even hits the stock room shelves!


With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery Dates

Estimated Delivery Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery Dates provided on product pages.

The Current Estimated Delivery Date is Undetermined

Hassle Free Returns


Refunds are processed by the same method of payment used for the original purchase. All debit and credit card refunds can only be made to the card used for the original transaction, cheque payments will be refunded in cash but due to banking and clearance restrictions can only be refunded 14 days after the purchase date.


Store Purchases

Should you be unhappy with a purchase from one of our stores, please return the goods with proof of purchase within 7 days for a full refund, or within 14 days for a credit note. Any items can be returned to any Cycles UK store, providing they are returned in their original condition – unused (unless the goods are faulty). We regret we cannot refund special orders or cycle purchases.


Mail Order Returns

At Cycles UK, we pride ourselves on excellent customer service and aim to ensure our customers are 100% happy with their purchase. In the unlikely event that you are not, please feel free to return your goods within 90 days of receipt of them, with proof of purchase for a full exchange or refund. All items can be returned to us providing they are returned in their original condition – unused (unless the goods are faulty). All Mail order purchases must be returned by the customer to our head office address unless arranged otherwise. Depending on the reasons for returning an item, postal charges could apply.


Returning your order from within the UK 

Return your item(s) to us using the Royal Mail tracked service for free. (Excludes bikes and bulkier items and parcels over 2KG for UK use only)


  • Please print off the Royal Mail label, and attach it onto your parcel. 
  • Click here to print off a label .
  • Note when asking for an *Order ID this need to be preceded with the word "Web" followed by a space. For example Web 1234
  • Complete the returns note that came with your package and pop it into the package with your return.
  • Take your parcel into any Post Office. Remember to ask for a proof of return receipt.
  • The return can be tracked using the tracking reference from your receipt at
  • We aim to complete returns within 7 working days (excluding weekends and bank holidays).
  • We'll send you an email informing you that the refund or exchange is complete. 
  • Any refund will automatically be issued to the payment method you used to place your original order. This typically takes 5 working days in the UK, depending on your payment method issuer.
  • We endevor to accept all returns, and they don't need to be in the original box or bag, as long as they're securely packed. If an item is returned in an unsuitable condition, we will send it back to you.


International Returns

If you wish to return an item that is unsuitable or not required, you will be liable for the return delivery. If you want to try a different size or style, then, delivery will be charged again to post the item back to you.

If you feel the product(s) you have purchased are faulty, please contact our Customer Service team on 44(0)1268 775265.


Disclaimer: Our website contains links to websites owned and operated by third parties; these are provided solely for your convenience. Cycles UK has no control over these sites and is not responsible for their content or availability.

2020 Trek Powerfly 4 Women’s Electric Mountain Bike Battleship

Brand : Trek

Code : THWarESLGpihselttaBTAM020

The 2020 Trek Powerfly 4 Women’s Electric Hardtail Mountain Bike in Battleship is Trek’s entry level electric mountain bike. It's built with parts that hold up, like a dependable 9-speed Shimano drive train, a 120 mm SR Suntour fork and a powerful Bosch Performance CX motor. Plus, it features Trek’s user-friendly Removable Integrated Battery (RIB) system that's fully encased in the frame.

The Powerfly 4 is built around a lightweight and durable Alpha Platinum Aluminium frame that fully encases a long-range 500 Wh battery for sleek looks and protection on the trail. The Bosch Performance CX (250 W, 75 Nm) motor that assists up to 25 km/h. It is the same one found on the more expensive Powerfly 5 and 7 with lots of torque to get you over rocks and roots. The ergonomic Bosch Purion controller makes it easy to switch modes as you ride.

The rest of the spec on the Powerfly 4 is what you would expect to find on a good entry level trail bike. It includes a 9 speed Shimano drive train, a 120 mm SR Suntour XCR fork with lockout and hydraulic disc brakes.


This bike is perfect for

Riders who want to go electric and want the power and range of more expensive bikes but at a super affordable price point.


Key Features

  • Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy remove the battery without tools and lets you mount a water bottle cage
  • This bike expands boundaries: the top-notch Bosch system is equally suited to commuting, recreation and a ridiculously fun time on the trails
  • The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain
  • It's equipped with an external charging port for easy charging on or off the bike
  • It rides like a trail bike because it is one: Powerfly is built according to Trek's trail heritage with mountain bike tech developed over decades of innovation.
  • The size smaller frame features a curved top tube that makes standing over the bike easier. Plus, Smart Wheel Sizing means you'll get the fastest wheel that fits – 29˝ wheels on larger frames, 27.5˝ wheels on smaller frames


  • €2,834.39
  • $3,934.29
  • CAD 3,612.27
  • $4,228.25
  • $2,622.99
  • CHF 2,522.93
  • kr29,736.43
  • ISK 356,701.82
  • kr21,143.79
  • kr25,408.96
  • ¥282,771.82
  • Technical Information
    Frame - Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armour, Boost148, 12 mm thru axle  
    Fork - SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel  
    Front suspension - SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel  
    Front Hub - Formula DC-511, 6-bolt, Boost110, 15 mm thru axle  
    Rear Hub - Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle  
    Rims - Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve  
    Tyres - Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30"  
    Shifters - Shimano Altus M2010, 9-speed  
    Rear derailleur - Shimano Acera M3000, Shadow design, long cage  
    Crank - FSA 310, 36 T w/chain guard  
    Cassette - Shimano HG200, 11-36, 9-speed  
    Chain - KMC E9S, 9-speed  
    Pedals - VP-536 nylon platform  
    Saddle - Bontrager Ajna Women's  
    Seatpost - Bontrager alloy, 31.6 mm, 12 mm offset  
    Handlebar - Bontrager alloy, 31.8 mm, 15 mm rise  
    Stem - Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree  
    Grips - Bontrager XR Endurance Comp  
    Headset - FSA IS-2, 1-1/8" top, 1.5" bottom  
    Brakeset - Tektro HD-M275 hydraulic disc  
    Battery - Bosch PowerTube, vertical, 500 wh  
    Controller - Bosch Purion  
    Motor - Bosch Performance CX, 250 Watt, 75 Nm, 25 km/h max assist  
    Weight - Small - 23.80 kg / 52.47 lbs (with tubes) 
    Sizing Information






    Rider Height Inches

    4’ 5.9” – 5’ 1”

    5’ 0.2” – 5’3.8”

    5’ 3.4” – 5’ 8.9”

    5’ 8.5” – 6’ 2”

    Rider Height CM

    137 - 155

    153 - 162

    161 - 175

    174 - 188


    Professional Opinion
    Product Reviews
    Write a review
    0 As rated by 0 Customers

    Write a review

    Your name
    Your email address
    How would you rate it?
    Would You Recomend this product?
    Let others know your opinion
    Submit Review Close