A closer look at the Eclipse P20

N-Fold™ Technology

The faster fold

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.

OCL™ Frame Joint

Advanced folding technology

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.
Serviceable
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.
Precision-Machined
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.

DoubleTruss™ Technology

Stiffer by design

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.

Tarsus™ Fork

Hydroform meets function

Utilizing a single hydroformed tube mated to a precision-machined steerer, the Tarsus delivers superior strength in a shape that matches the sophisticated lines of the Verge and Eclipse frames.
Hydroformed Tubing
The process of hydroforming aligns the grain structure and strengthens the aluminum material. It also minimizes welding in the most highly stressed area of the fork.
Internal Wire Routing
If you decide to equip your Tarsus with a dynamo hub, it’s ready for internal cable routing, keeping the profile of your bike clean.

Physis™ 3D Handlepost

The new benchmark

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

Syntace VRO Stem

Find your fit

Your bike should adapt to fit you―not the other way around. This adjustable stem allows you to position your handlebars further, for a more stretched and aggressive riding position, or up higher for increased comfort.
Adjustable
Stems are 47mm in length and infinitely adjustable so you can find your perfect fit.
Syntace quality
Syntace is a boutique German company renowned for their best-in-class bicycle components that are selected by many champion professional riders. They are perhaps best known for their manic attention to detail and brutal testing standards.
Light
Only 120 grams. 100% CNC machined from 6066 aluminum.
Strong
Two stems spaced widely apart means excellent torsional stiffness so go ahead and crank hard on your bars with confidence.

BioLogic Arx™ Grips with T-Tool

There when you need it

BioLogic Arx grips are quality, ergonomic grips designed to put your hands and wrists in a comfortable position. But they have a hidden secret—a 4/5/6 mm Allen tool hides in the right grip. It’s there when you need it, out of the way when you don’t.

Tektro Hydraulic Disk Brakes

Stopping power

When you’re going fast, in all sorts of weather conditions, you need brakes that work, and work well. Tektro hydraulics fit the bill with sure, single-finger stopping power.

Kinetix Pro Disc Wheels

Speed alert

A paired-spoke design allows us to build a strong wheel with fewer spokes—resulting in a lightweight, aerodynamic wheel for fast riding.
Rolf Paired Spoke™ Technology
Paired Spoke lacing allows us to use fewer spokes at higher tensions, resulting in a wheel that is lighter, stronger, and more aerodynamic.
Double-Butted Spokes
To reduce weight on your bike, we use nice thin spokes. We build-in strength by making them thicker at the ends where stresses are higher.
Resistance to the Elements
Our custom-built wheel hubs use sealed cartridge bearings to resist to dirt and water.

Schwalbe Kojak Tires

Fast and light

Light and fast tires with enough volume to keep things comfy. Kojak’s are ideal for fast commutes or longish weekend rides.

Shimano Tiagra 2 x 10 Drivetrain

Do it all

To give you awesome climbing gears while maintaining downhill speed, we pair an 11-32T cassette, compact double 50/34T crankset, and Shimano Tiagra derailleurs.

Magnetix™ 2.0

Keep it together

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.