Name: Tern BYB P8 Folding Bike
Brand: Tern
SKU: 12-7-03
Price: 999.0 USD
Availability: InStock

$999.00

Shipping calculated at checkout.

In stock, ready to ship
Backordered, shipping soon

Special Order Item
We special order all Tern bikes. Please allow a few days for your bike to arrive.

✓ Assembled & safety-checked in our Havertown, PA shop before it ships — not a warehouse.
✓ Real mechanics on the phone. Questions about fit or compatibility? Call us before you buy.

Items must be returned unused and in original, undamaged packaging with receipt.
Cash/credit card refund within 14 days of original sale.
Store Credit only, after 14 days.
NO returns or exchanges after 30 days.
NO returns or exchanges on special orders or clearance items.
Bikes and wheels purchased online and shipped are not eligible for return or exchange.

Send returns to:
MECHANIC Bicycle Pro Shop:
ATTN: Returns, (Your Order #)
1327 Darby Road
Havertown, Pennsylvania, 19083

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BYB P8 Overview

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 Alivio, Shadow RD derailleur
Color: Satin Silver-Blue

Component Specifications

Sourced from Tern's published specifications for the BYB P8. Data note: Tern's published spec sheet for the BYB P8 lists no motor, battery, or display component — this is a manual (non-electric) folding bike, despite being grouped with Vektron e-bikes in this batch. Built in one universal frame size.

Frame & Build

Frame	Tern BYB, aluminum, TriFold patented technology, EFBE tested to ISO 4210
Fork	Tern Tarsus, 6061-AL, hydroformed
Frame Size	One size, fits riders 147–195 cm (4′10″–6′5″)
Color	Satin Silver-Blue

Drivetrain

Shifter	Shimano, 1 x 8-speed
Rear Derailleur	Shimano Alivio, Shadow RD
Crankset	Forged 6061-AL, 52T
Cassette	Shimano, 11–32T, 8-speed
Chain	KMC, 8-speed

Brakes

Front & Rear Brake

Kinetix SpeedStop V-brakes, stainless hardware

Wheels & Tires

Wheel Size	20-inch (406 mm)
Rims	Doublewall aluminum
Tires	Schwalbe Citizen, 42-406, puncture protection, Reflex

Cockpit

Handlepost	Tern Physis RF, 3D forged (5 patented technologies)
Stem	Tern Andros (G2), adjustable, forged construction
Headset	Flux, cartridge bearings, Physis-integrated
Handlebar	Flat bar, 6061-AL, Andros adapted
Saddle	Tern Porter, patented GripPad design
Seatpost	Tern Telescope, 34.9/30.9 mm
Rack	Metro Transit Rack with built-in spinner wheels for trolleying

Folded Dimensions

Folded Size (L x W x H)	35 x 81 x 52 cm (13.8 x 31.9 x 20.5 in)
Folding Time	30 seconds
Weight	14.3 kg (31.5 lb)

Geometry

The BYB P8 is built in a single universal frame size with an adjustable handlepost/seatpost rather than multiple frame sizes. Tern does not publish a stack/reach/tube-angle geometry chart for this model — folded dimensions and rider height range above are the published fit data.

Tern BYB P8 Folding Bike