Tern has just introduced their new folding bike series called BYB (Bring Your Bike) in May 2019. There are two new bikes, which are BYB S11 and BYB P8, and both of them are launched in July 2019.

New Features

Tern is a Taiwanese company founded in 2011 by Josh Hon whose father is Dahon’s founder. Therefore, a lot of Tern bikes have the same middle hinge as found on Dahon folders. The new Tern BYB bikes have made a breakthrough by introducing TriFold technology with 2 hinges on the main frame and 1 more hinge on the handlepost.

Tern BYB S11
Tern BYB P8

Tern describes these as their smallest folding bikes ever as they are 30% smaller than typical 20-inch folding bikes. They use 20-inch wheels, therefore, the folded size is not as compact and the folding mechanism is a little more complex than a Brompton. Otherwise, they feature rack-integrated spinner wheels for easier trolleying, a stiff and durable DoubleDeck frame design, and a comfortably long cockpit.

Tern BYB P8 vs BYB S11

Wheel Size20″20″
Weight14.3 Kg (31.4 lb)12.7 kg (27.9 lb)
Folding Size35 x 81 x 52 cm (13.8″ x 31.9″ x 20.5″)33 x 81 x 51 cm (13.0″ x 31.9″ x 20.1″)
Gear Inches31″ – 91″ (2.50 – 7.28 m)32″ – 94″ (2.57 – 7.48 m)
Suggested Rider Height147 – 195 cm (4’10” – 6’5″)147 – 195 cm (4’10” – 6’5″)
Maximum Load Weight105 kg (231 lb)105 kg (231 lb)
FrameTern BYB, Aluminum, TriFold patented technology, EFBE tested: ISO 4210Tern BYB, Aluminum, TriFold patented technology, EFBE tested: ISO 4210
ForkTern Tarsus, 6061-AL, hydroformedTern Tarsus, 6061-AL, hydroformed
HandlepostTern Physis RF, 3D forgedTern Physis RF, 3D forged
StemTern Andros (G2), adjustable, forged constructionTern Andros (G2), adjustable, forged construction
HeadsetFlux, cartridge bearings, Physis integratedFlux Pro, angular contact bearings, Physis integrated
HandlebarFlat bar, 6061-AL, Andros adaptedKinetix Pro X, double-butted 7050-AL, Andros adapted
GripsVelo ergonomic, lock-onErgon GS1 Leichtbau
SaddleTern Porter, patented GripPad designErgon SMC30 Pro, TiNox Rails
BrakesKinetix SpeedStop V-brakes, stainless hardwareTektro V, swivel link, race pad
Front WheelKinetix Neutron Mini 74, sealed cartridge bearing Opt: BioLogic Joule 3 dynamoKinetix Pro X, Paired Spoke technology, straight-pull design, 16H
Rear WheelNovatec, sealed cartridge bearingKinetix Pro X, Paired Spoke technology, straight-pull design, 16H

TiresSchwalbe Citizen, 42-406, puncture protection, ReflexSchwalbe Marathon Racer, 40-406, puncture protection, Reflex

Shifter Shimano, 1 x 8 spdShimano Ultegra, 1 x 11 spd
Rear DerailleurShimano Acera, Shadow RDShimano Ultegra, Shadow RD
CranksetForged 6061-AL, 52TFSA Gossamer Pro, 54T MegaEVO BB386

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