Tern BYB P8 Folding Bike

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Cars, buses, trains. Shops, escalators, elevators. Lockers, cabinets, checked-in luggage. The Tern BYB P8 Folding Bike lets you bring you bike just about everywhere.

Our take on the Tern BYB P8 Folding Bike
  1. Folding
  2. Lightweight
  3. Derailleur Gears
  4. Comfort

We know that buying your dream bike or electric bike isn't a snap decision - that's why we offer free test rides in each of our four London bike shops.

We've made booking a test ride easy with our online system. Start by choosing a date and time that suits you, followed by your preferred location and finally, the model or bike type that interests you.

Book Now

Once you have purchased your new bike from us, it will be put into the build queue for one of our workshops. Your bike will be built and will undergo a Pre Delivery Inspection (PDI) by one of our expert mechanics. A PDI is a checklist that the mechanic follows to confirm that all parts of your new bike are up to our high standards.

Next, your bike will be prepared for shipping. Padding is used on all the necessary areas and your bike is loaded into a sturdy cardboard bike box. All the necessary paperwork and accessories will be packed inside too. Most of our cardboard and packaging are recycled from incoming deliveries. Bikes are usually delivered by DPD within the UK.

In order to package your bike safely, you will need to do a small amount of assembly when it arrives. It can vary from bike to bike, but usually you’ll need to: fit the front wheel, install the handlebars and fit the pedals. Please note that not all bikes come with pedals - please check the specification on each bike, we’ll include it on there.

More Information
Frame Tern BYB, Aluminum, TriFold patented technology, EFBE tested: ISO 4210
Fork Tern Tarsus, 6061-AL, hydroformed
Wheels Rims: Double wall Aluminum. Front hub: Kinetix Neutron Mini 74, sealed cartridge bearing Opt: BioLogic Joule 3 dynamo . Rear hub: Novatec, sealed cartridge bearing
Tyres Schwalbe Citizen, 42-406, puncture protection, Reflex
Shifters Shimano, 1 x 8 spd
Front Derailleur N/A
Rear Derailleur Shimano Acera, Shadow RD
Crank Forged 6061-AL, 52T
Cassette Shimano 11-32T 8 speed
Chain KMC, 8 speed
Brakes Kinetix SpeedStop V-brakes, stainless hardware
Saddle Tern Porter, patented GripPad design
Seatpost Tern Telescope, 34.9/30.9 mm, 2014-AL
Handlebar Flat bar, 6061-AL, Andros adapted
Stem Tern Andros (G2), adjustable, forged construction, patented technology
Pedals MKS EZY
Accessories Bell, chainguard, mudguards, pannier rack, kickstand

Accessories delivery

We ship accessories Monday - Friday and aim to dispatch all orders within 2 days of receiving them. Free shipping orders are sent with Royal Mail and for bulky items, we may use DPD (at no extra cost).

Bikes delivery

In stock bikes are usually shipped within 14 days of you ordering as they undergo a Pre Delivery Inspection before dispatch. Bikes are delivered by DPD who provide a delivery window via text message on the day. Delivery of electric cargo bikes costs £40. This service is available to all mainland UK postcodes. Click and collect for electric cargo bikes is free.

Click & Collect

We can arrange for all items to be collected from store. For items other than bikes this usually takes 2 - 4 working days. Bikes can take up to 14 working days to be available. We’ll let you know when items are ready for collection. Please bring a form of ID and a bank card with you when you pick up your order.


We accept returns on orders up to 14 days after the items arrive with you. All accessory returns should be in saleable condition and be sent to our Hackney address with a note which has your name and order number on it. Refunds are processed within five working days.

International Shipping

International delivery charges are estimates and are subject to change. Please contact us for more information. Please note that international accessory deliveries will be handled via Royal Mail and sent ‘Delivered Duties Unpaid’ (DDU). You may have to pay import VAT (and customs duties, if payable) as well as a handling fee.

Product Description

As soon as you stop riding, why leave your bike behind? That was Tern's design basis when they dreamt up the BYB range. The P8 has a tri-fold system, rather than the traditional double-fold - two hinges in the frame and one on the handlebar help the bike fold down as small as 35×81×52 cm (13.8×31.9×20.5 in). When folded, anchor bolts keep the two wheels locked together, ensuring the bike remains as one complete package - no flopping about when hopping on the 07:55! 

In most circumstances, the bike takes around 30 seconds to fold and once folded, caster wheels integrated into the rear pannier pack offer the chance to wheel the bike along rather than lift it. A neat idea if you're travelling with other luggage or bags.

When it comes to unfolding the BYB P8, the hinges use strong aluminium pins which lock in place when unfolded with the security of a deadbolt. Two main frame tubes offer extra rigidity, helping the bike feel like a normal bike when ridden. 

The BYB P8 adds extra versatility with its luggage carrying potential. Use the included rear rack to add an Ortlieb pannier or add a luggage truss upfront and there's an eye-boggling number of baskets, bags and trays available to purchase. 

  • 30% smaller than traditional 20” folding bikes
  • Fits conveniently into lockers, closets, or any narrow space
  • Metro Transit Rack with built-in spinner wheels for easier trolleying
  • Fits riders from 147 to 195 cm (4’10” – 6’5”)
  • New TFL Joint with 3D interface, DeadBolt design and SpringLock technology
  • New 3D-forged Physis RF Handlepost
  • Tern Porter saddle with patented GripPad design
  • 8-speed Shimano Acera, Shadow RD derailleur

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