Tern Eclipse D16

Product Description

The Eclipse D16 delivers the best price-to-performance ratio of any bike in our lineup. Designed with full-sized 26” wheels, a height adjustable stem, hydraulic disc brakes, and a massively stiff hydroformed Eclipse frame, it ticks all the boxes. Somehow, we managed to get it all in there at an amazing price.

  • Best-riding introductory bike in our lineup, thanks to large 26” wheels and our unique folding technology
  • Folds in 10 seconds or less—store it indoors or transport it in your car
  • Resizes in seconds to fit a wide range of riders
  • Tool-free adjustable handlebar stem lets you change riding positions on the fly
  • Optional fenders for rainy days

Tech Specs


WHEEL SIZE: 26" wheels

SPEEDS: 2 x 8

WEIGHT: 14.8 kg (32.6 lb)

FOLDING SIZE: 44 x 91 x 75 cm (17.3" x 35.8" x 29.5")

FOLDING TIME: 10 seconds


GEAR INCHES: 29" - 115" (2.28 - 9.14 m)

DISTANCE: SEATPOST TO HANDLEBAR: Min: 630 mm (24.8"); Max: 700 mm (27.6")

DISTANCE: SADDLE TO PEDAL: Min: 795 mm (31.3"); Max: 1050 mm (41.3")

SUGGESTED RIDER HEIGHT: 148 - 195 cm (4'10" - 6'5")

MAX LOAD WEIGHT: 105 kg (230 lb)


FRAME: Tern Eclipse, hydroformed aluminum, 3 patented technologies

FORK: Integrated, hi-tensile steel


HANDLEPOST: Tern Physis 3D, 3D forged, 5 patented technologies

STEM: Tern Andros, adjustable, forged construction, patented technology

HEADSET: Flux, cartridge bearings, Physis integrated

HANDLEBAR: Flat bar, 6061-Al

GRIPS/BAR TAPE: Velo ergonomic, lock-on

SADDLE: Tern Porter, patented GripPad design

SEATPOST: SuperOversize, 6061-Al, micro-adjust clamp

SEATPOST CLAMP: SuperOversize, 6061-Al


FRONT BRAKE: Shimano, hydraulic disc

REAR BRAKE: Shimano, hydraulic disc

BRAKE LEVERS: Shimano, hydraulic disc


WHEELS FRONT HUB: Shimano, Centerlock disc

REAR HUB: Shimano, Centerlock disc

SPOKES AND NIPPLES: Stainless steel

RIMS: Doublewall aluminum, disc only

TIRES: Schwalbe Spicer, 40-559, puncture protection, Reflex


SHIFTER(S): Shimano, trigger, 2 x 8 spd



CRANKSET: Forged 6061 aluminum crank, 50/34T

CASSETTE/FREEWHEEL: Shimano, 11-30T, 8 spd

BOTTOM BRACKET: Cartridge, sealed bearings

CHAIN: KMC 8 spd

PEDALS: Folding, alloy body



BELL: Aluminum

KICKSTAND: Deluxe center mount

CLIP SYSTEM: Magnetix 2.0


FENDERS: RP Chromeplastic, stainless hardware


*Note: These are our standard model specifications. The bike's weight and folded dimension may not include racks and fenders. The specifications for your country may differ slightly. We do our best to ensure that the specifications listed here accurately reflect the exact parts found on our production bikes. However, component changes do occur for various reasons and there may be brief delays on site updates. We reserve the right to make component changes without prior notification, which may cause discrepancies with the information listed on the web.



With N-Fold Technology, Tern bikes fold small and fast—in three easy steps. It’s simple enough for anybody to master. And with the handlepost folded to the outside of the package, Tern bikes can also roll when folded for easy transport.


The key to any folding bicycle is the frame, and specifically, the folding joint at the heart of the frame. Done well, it locks the two halves of the frame together without any hint of movement or sound. It should be easy to operate and work flawlessly year after year. The OCL Joint does all of these things and is a new reference in folding frame technology.

Stronger by Design:

Making the hinge taller and moving the pivoting surfaces outward from the center axis more than doubles overall strength and stiffness. It’s a difference you’ll feel from your very first ride.

Smooth Operation:

The patented design puts four igus® bearings between the aluminum and stainless steel moving parts so the folding action is always smooth and friction-free.

Interlocking Joint:

The front and rear joint surfaces lock together to eliminate torsional movement.

Easy to Use:

Large rounded surfaces on the lever and joint bodies are easy on your hands and allow good leverage for easy operation.

Doubly Safe:

Close the lever and the AutoLok automatically locks in place, for extra, easy security.

Floating Point Technology:

Patented technology allows the lever to fold flat and brace against the joint for protection in transit.


Good things are built to last and that’s why the OCL Joint is designed to be dealer serviceable. We keep every part in stock and if your bearings ever wear out, your dealer can replace them in a few minutes.


A machining tolerance of only 50 microns ensures a tight fit and eliminates looseness and rattling.

Stainless Steel Hardware:

Cold-worked stainless delivers the durability and reliability needed for daily riding in all weather conditions.


The rear half of Tern frames use a patented 3D structure we call DoubleTruss to build in extra stiffness. It helps resist torsional forces so our bikes flex less. That means increased stiffness and much better power transfer from the pedals to the rear wheel. The proof’s in the ride.


Five patented technologies and unique manufacturing technology add up to the strongest, stiffest folding handlepost available. The Physis uses a special manufacturing process called 3D forging, which forms the post from a single piece of aluminum, eliminating all welds.

No Flex:

To eliminate flex, the Physis uses a massive joint knuckle and a post that gradually tapers from thick at the base to thin. Moreover, it has 150% more clamping height between the fork steerer and the handlepost than common designs.

Flux Technology:

The base of the Physis is machined so it functions as the upper race of the headset. This patented direct integration contributes to the incredible stiffness of the design.

Interlocking Halves:

Joint surfaces lock together to improve torsional stiffness. We've fine-tuned the shape to virtually eliminate squeaks.

Redundant Double Bolts:

Two bolts clamp the Physis to the fork steerer for improved safety.

igus® Bearings:

The patented design puts sliding bearings between the moving parts so the folding action is always smooth and friction-free.

Large, Smooth Lever:

Large rounded surfaces are easy on your hands and provide good leverage for easy operation.

AutoLok Technology:

Close the lever and it automatically locks in place, for extra, easy security—using an aluminum pin.

Floating Point Technology:

Patented technology allows the lever to fold flat and brace against the joint for protection in transit.

SpringLock Technology:

Patented SpringLock technology holds the adjustment rod firmly in place so the locking lever is always properly tensioned and can never vibrate loose.


Good things are built to last and that’s why the Physis is designed to be fully dealer serviceable. We keep every part in stock and replacing the bearings can be done in minutes.

TriSeal Design:

Three rubber seals keep weather out and the headset bearings functioning smoothly.


A machining tolerance of only 50 microns ensures a tight fit and eliminates looseness and rattling.


The Andros is our patented adjustable stem that lets you set your handlebars where you want—no tools, no fuss. In just seconds, you can set your riding position to long and low in a tough headwind, or upright and comfy for riding around town. You decide how you want to ride and the Andros makes your bike fit.

Quick Release:

Patented quick-release, tool-free design is easy to operate.

TwinStem Design:

The Andros design uses two stems, spaced widely apart for excellent torsional stiffness.

Fits the Family:

Accommodates riders of all sizes so one bike can be shared by multiple riders.

Forged Construction:

The patented design is FEA optimized and fully forged for maximum strength with minimum weight.

Built to Last:

Stainless hardware and brass bushings for long-term durability.


ErgoLock grips are nice and wide for excellent palm support so your hands can relax during the ride. They also lock in place on the handlebars so they’re always in the correct position, unlike non-locking grips which tend to rotate out of position.


One of our favorite ways to get a Tern bike up a set of stairs is to hook the nose of the saddle over a shoulder. It’s fast and easy, but the nose of the saddle can be hard. We solved this pain-point by re-engineering the underside of the saddle into a comfortable shoulder pad. It cushions and “grips” your shoulder so your hands are free to carry other things—like a backpack or the weekend’s groceries.


Shimano hydraulic disc brakes deliver powerful stopping power in all weather conditions with the touch of a finger.


A nice, smooth tread makes for easy rolling yet you’ll still have enough grip for wet road conditions. Rest easy thanks to puncture protection, and reflective accents to keep you safe at night.


The Magnetix 2.0 uses powerful magnets to keep your bike folded for situations like carrying your bike up and down stairs. With a pull force 10-15 Kgf, the Magnetix 2.0 will keep your bike folded even when being jostled and moved about.


Fix the Tern Luggage Truss to the Luggage Socket and you can plug in your choice of front luggage: rack, basket, or bag. If it’s KlickFix compatible, it’ll work.

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