Tern BYB S11 2020 - Folding Bike
- ShowProduct Information Cars, buses, trains. Shops, escalators, elevators. Lockers, cabinets, checked-in luggage.The BYB let... read more
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- Show Folding Bike Size Guide
- Show Folding Bikes Guide
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Cars, buses, trains. Shops, escalators, elevators. Lockers, cabinets, checked-in luggage.
The BYB lets you bring you bike just about everywhere.
- 35% smaller than traditional 20" Tern folding bikes
- Fits conveniently into lockers, closets, or any narrow space
- Metro Transit Rack with built-in spinner wheels for easier trolleying
- New TFL Joint with 3D interface, DeadBolt design and SpringLock technology
- New 3D-forged Physis RF Handlepost
- Kinetix Pro X wheels with paired spoke technology
- 11-speed Shimano Ultegra, Shadow RD derailleur
Gear Inches / Metres of Development: 32" - 94" (2.57 - 7.48 m)
Folded Dimensions: 33 x 81 x 51 cm (13.0" x 31.9" x 20.1")
Max Load Weight (Rider & Cargo): 105 kg (231 lb)
Occasionally, without notice, manufacturers change product design and/or specifications.
|Frame:||Tern BYB, Aluminium, TriFold patented technology, EFBE tested: ISO 4210|
|Fork:||Tarsus, 6061-AL, Hydroformed|
|Stem:||Tern Andros (G2), Adjustable, Forged Construction, Patented Technology|
|Bars:||Physis RF, 3D forged, 5 Patented Technologies|
|Front Brake:||Tektro V, Swivel Link, Race Pad|
|Rear Brake:||Tektro V, Swivel Link, Race Pad|
|Rear Mech:||Shimano Ultegra, Shadow|
|Shifters:||Shimano Ultegra, 1 x 11 spd|
|Front Tyre:||Kinetix Pro X, Paired Spoke Technology, Straight-Pull Design, 16H|
|Rear Tyre:||Kinetix Pro X, Paired Spoke Technology, Straight-Pull Design, 16H|
|Seat Post:||Telescope, 34.9/30.9 mm, 2014-AL|
|Saddle:||Ergon SMC30 Pro, TiNox Rails|
|Chainset:||FSA Gossamer Pro, 54T MegaEVO BB386|
|Bottom Bracket:||FSA, BB-EVO8681|
|Chain:||Shimano, 11 spd|
|Cassette:||Shimano 105, 11-32T|
|Pedals:||MKS UB-LITE EZY|
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Folding Bike Size Guide
Folding Bike size guide
Folding bikes are made to a “one size fits all” size.
Generally speaking, this should suit riders between 4’9” and 6’3” (145 to 191cm)
Brompton bikes sizing
Brompton size by inside leag measurement, they offer different seatpost lengths to suit. There are three different seatpost options.
Standard Seatpost – Inside leg measurement up to 33”
Extended Seatpost – Inside leg measurement of 33” – 35”
Telescopic Seatpost – Inside leg measurement greater than 35”
Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!
Folding Bikes Guide
How do I apply for finance?
Spend £99 or more at Tredz and you can spread the cost. Pay monthly over 6-48 months, interest free (dependent on repayment terms and amount).
1Fill your basket with everything you want from Tredz and go to the checkout.
2During checkout, select the finance option you want as your method of payment.
3You will be sent to our finance provider's secure server to complete your application.
4Finance providers PayPal & V12 will use the information provided to make a decision and complete checkout if you are approved.Read more about buying on finance
Flexible finance options
Choose your deposit.
Choose your term.
Lowest monthly cost
for 48 months
Best £0 deposit / 0% interest
for 24 months
Delivery & Guarantee
UK Delivery Information
Courier Delivery update: Due to the COVID19 situation, we are currently experiencing some delays with deliveries. Our couriers are working around the clock to get your order to you as soon as possible but there is a potential delay of up to 48 hours . Please check your tracking on track your order here.
Please note on the TNT tracking app it may show your delivery status as ‘Collecting’ (as per image below). This means your delivery has left our warehouse and is currently held at TNT main depot and there could be up to a 48 hour delay.
Please keep checking the TNT tracking for further updates. On behalf of TNT we apologise for any delay and inconvenience this may cause.
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
Returns & Warranty
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.
What's In The Box
What's In The Box
As cyclists ourselves, we know you will be keen to get out on your new bike as soon as possible. That's why we provide you with all the essential kit you need to get your shiny new bike rolling for the first time.
Most bikes don't come with pedals as standard so we include a set of basic pedals, free of charge with every bike we send out. We will also provide you with a pedal spanner to fit them and a 9-key trail tool, along with full instructions for setting your bike up out of the box. Each bike is sent out with a 16 point, quality control check sheet so you can be confident that your bike has been fully checked by our qualified mechanics.
- Basic setup instructions
- 16 point quality control checklist
- Free tredz multitool
- Free tred pedal spanner
- Free basic pedals
- Free drawstring kit bag
- Free bike insurance voucher
All these items are provided at no extra charge and are packed into a Tredz drawstring bag that doubles up as a handy backpack for carrying your ride essentials.
- Basic bike setup instructions
- Free ‘basic’ pedals
- Free Tredz pedal spanner
- Free Tredz 9-key trail tool
- Free Tredz drawstring bag
- Free 8 weeks insurance voucher
- 16 point, quality control check sheet
Read our bike setup guide.
- Tredz bikes are fully checked & tested by Cytech qualified mechanics
- 0% APR finance available on any basket over £99
- 365 day 'no hassle' returns
- Free UK delivery, on a date that suits you
Finance provider options available