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Synch Longtail Monkey 2 Seater Electric Bike 250W

£2,199.00

Est. Delivery:

Warranty: 2 Years

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The Ultimate Two-Seater Electric Bike

The Synch Longtail 250W blends retro styling with modern electric performance, offering a class-leading ride experience for both solo adventures and two-person journeys. Designed for versatility, comfort, and power, this extended-seat e-bike is perfect for urban commuting, weekend getaways, or simply sharing the ride.

With its striking design, the Longtail takes inspiration from the popular Super Monkey model, adding extra capacity without sacrificing performance. Whether you're cruising through city streets or tackling scenic countryside routes, this British-built electric bike is engineered for reliability and style.

Hand-Built in the UK with British-Made Batteries 🇬🇧

Each Synch Longtail is designed, built, and assembled in the UK, ensuring the highest standard of craftsmanship. Unlike most e-bikes, Synch is the first electric bike company to use UK-manufactured batteries, supplied by Danecca, a specialist battery manufacturer based in Silverstone.

Powerful, Responsive & Built for Adventure

  • 250W Bafang rear hub motor delivers smooth and consistent power.
  • 48V 16Ah UK-manufactured battery provides up to 40 miles of range with a quick 4-5 hour recharge time.
  • Torque sensor drive system intuitively adjusts power based on your pedaling effort, ensuring a natural and efficient ride.
  • Shimano 7-speed gears allow you to adapt effortlessly to different terrains.
  • Tektro hydraulic disc brakes offer precision stopping power in all conditions.
  • Front suspension forks absorb bumps and enhance ride comfort.
  • Puncture-resistant Synch tyres provide durability and grip on varied surfaces.

Custom Colour & Accessories – Make It Uniquely Yours

With Synch's custom colour option, you can design your Longtail 250W to suit your personal style—simply choose any shade from the RAL chart, and we’ll build it in your selected finish.

Enhance your ride further with optional accessories, including:
✔️ LED headlight & rear light for improved visibility
✔️ Mudguards to keep your ride clean
✔️ Foot pegs for a comfortable two-person setup
✔️ Front rack & caddy for extra cargo space

Designed for Comfort & Stability

With an extended frame for added balance and a step-over design, the Longtail 250W is perfect for riders between 5’4” and 6’3”. Weighing 29kg, with a total length of 175cm and a height of 114cm, it offers a stable, smooth, and comfortable ride every time.

2 Year Warranty & White Glove Delivery

  • 2-year warranty on the frame and forks
  • 1-year warranty on electrics
  • White Glove Delivery – arrives fully assembled, ready to ride, with no setup required.

Built to Order – 2-Week Lead Time

Each Synch Longtail 250W is built to order with a current production lead time of 2 weeks.

🚲 Order today and experience British-built electric biking at its finest! 🇬🇧

Please note the LED front headlamp is not included in the price and is an optional extra. 

Built to Order in the UK

Every Synch e-bike is hand-built to order at the Synch factory in Devon, ensuring exceptional craftsmanship and attention to detail.

Torque Sensor Drive System

The upgraded torque sensor system delivers instant power the moment you apply pressure to the pedals, offering a smooth, responsive, and efficient ride.

Comfortable 2 Seater

Specifically designed with an extended seat, providing comfortable seating for two people. Whether you're enjoying a leisurely ride with a friend or sharing the adventure with a loved one, the extended seat ensures that both passengers can relax and enjoy the journey together.

UK-Manufactured Batteries 🇬🇧

Powering your ride is a high-quality battery manufactured in the UK by Danecca, a leading custom battery manufacturer based in Silverstone.

Customisable Bike

Make it truly yours! Choose everything, from accessory add-ons to the frame colour—simply pick any shade from the RAL colour chart.

Ready-to-Ride White Glove Delivery

No assembly required! Our expert delivery team ensures your bike is fully built and ready to ride the moment it arrives.

specifications

Battery and Range
Torque Sensor - 48v 16ah (up to 40 mile range) ** Range according to battery capacity. It is also dependent on the different riding conditions - pedal assist level, terrain, rider weight, tyre pressure, headwind etc.
Motor
Bafang rear hub motor 250W
Dimensions
Bike Height 114cm, Bike Length 175cm.
Display
Light up LCD display, 5 levels of assist plus walk mode
Lights
(optional add on) LED front headlamp & Rear LED brake and tail light.
Brakes
Tektro hydraulic disc brakes
Tyres
Synch (by Innova) puncture resistant tyres - 20" x 4"
Gears
Shimano 7 speed gears
Max Speed
15.5MPH
Rider Height
5'2" - 6'3" Max Rider Weight
Bike Weight
29kg (including battery)
Warranty
Motor and battery 1 year, frame and forks 2 years
Delivery and Returns
FREE DELIVERY ON ALL ORDERS. Delivery 2-3 weeks. Delivered fully assembled and ready to ride - inclusive in the price. Cancelling your order: If you would like to cancel your order, please contact us immediately at info@ecobikecompany.com or on 0333 050 3189. Please include your order number when contacting us. If your order has not yet left the manufacturer's warehouse, we should be able to stop it shipping, and issue you a refund immediately. Please note –  when returning a product, it must be returned in ‘as new’ condition, with all components included, in their original packaging. There will be a charge for the return. Returns - Changed your mind If you change your mind after buying from us and want a refund, you have up to 14 days to let us know and have the goods returned to us. You will need to return the product to us before we can provide a refund. Eco Bike Co. can help arrange the return for a charge of £50 - a courier will be sent to pick it up from you & return it to the manufacturer.   Please note –  the 14 days return period is to allow you to examine the goods as you would in a shop. To obtain a full refund, the goods must be returned in an “as new” condition with all components included in their original packaging. “As new” condition is defined as unridden. Returns - Damages & Faulty We ask that you thoroughly inspect all items at the point of delivery. We advise you not to accept delivery of any damaged items. If you discover that an item has been damaged, please send clear photos of the damaged items to info@ecobikecompany.com so that we can open an insurance claim on your behalf. If your bike develops a fault through normal use (as outlined in the manufacturer's manual) you could be entitled to a repair or replacement as covered with the warranty. Please send through details of the fault to info@ecobikecompany.com and we will arrange the repair or replacement with the manufacturer. Please note –  any fault caused due to misuse of the bike is not covered by this policy. Please ensure you read the manufacturer's manual in detail before using your electric bike to avoid voiding your warranty.
Synch Electric Bikes

Customer Reviews

Based on 3 reviews
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D
Damien
My favourite bike so far

Love the fact you set the speed up to what you feel.Love the retro look.The options are there so you can set gear assist and battery resistance to your desire.Overall delightful experience,Thanks Synch.

Damien review photo
P
Philippa Grant
Great urban cruiser as long as your city has no hills!

Lovely to look at, comfortable ride but hill performance is lacking. Only to be expected as this is a hub motor. Manages 18 miles on a single charge but don't expect to be able to go more than a snails pace without pedal assist. Having said all that it is thing of beauty and ideal for urban environment (as long as there are no hills). My kids love riding on the back. We use a kids motorcycle harness to make sure they don't wobble off.

J
Jordan
Synchgo Super monkey Longtail

Excellent purchase. Got it within two weeks. Love cruising around on it, even with someone on the back it is effortless. Haven't moved the car for weeks!

Jordan review photo