Tern GSD S10 Ex-Fleet Certified

The Exfleet Tern GSD is built to replace most car trips, featuring a unique design that delivers stable riding and the power to carry two kids plus groceries, or an adult passenger and a whole lot of cargo. The Bosch motor provides a seamless ride for riders of all sizes and experience levels. The pre-loved GSD e-bike is a perfect alternative for families or anyone who still needs a lot of space but doesn't want the downsides of owning a car.

Adjustable seat height supports many riders
The long rear rack can carry 2 little ones or an adult passenger
Extra powerful Bosch Cargo Line motor to support long trips and heavy loads
Pedal Assist Speed: 20 MPH - Class 1 - 400 Wh Battery E-Bike

Starting From:

$4,095.00

New RRP:

$4,999.00

Location

SoCal

Seattle

Bay Area

Condition

Grade A

Grade B

Grade C

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What's Included in my Exfleet e-Bike Purchase?

Our Exfleet Package is designed to give every rider peace of mind with every pedal, and every bike that "new ride" feel.

Every Exfleet Purchase Includes:

1-Year Extended Warranty: Ride with peace of mind knowing our 12-month warranty protects your investment (T&Cs apply).

Comprehensive Exfleet Certification Check: Every e-bike undergoes a rigorous multi-point inspection and refresh to ensure it feels and rides like a new bike.

Personalized Handover: Our experts will walk you through your bike’s features. From battery care to shifting gears, we’ll make sure you feel 100% comfortable before you hit the road.

Complete Key Set: You’ll receive all original spare keys for your battery and frame locks—no locksmith required.

Official Manuals: All the essential reading and technical guides for your specific model, right at your fingertips.

Wombi's Exfleet Certification Check

Every Wombi Exfleet e-bike undergoes a comprehensive certification check that includes:

New Parts: We replace the chain and brake pads on every Exfleet e-bike with brand-new parts.

Expert Check & Tune: Our expert mechanics check and tune all components, from the gears to the wheels, to ensure a smooth ride.

Safety Audit: A "nut and bolt" check ensures every fastener is tightened to spec for maximum safety and reliability.

Polish & Touch-Up: Every bike receives a professional-grade scrub, polish, and touch-up to restore that showroom shine.

Tern GSD Specifications

The Tern GSD Gen2 S10 is a heavy-duty, compact utility e-bike designed to carry two kids, a week's groceries, or 440 lbs of cargo without breaking a sweat.

Pedal Assist Speed: 20 MPH – Class 1

Motor: Bosch Cargo Line (Gen 4), 85 Nm, 400% support

Brakes: Magura MT5 eSTOP, 4-piston, hydraulic disc

Total Weight Capacity: 440 lbs

Rear Rack: Fits two Thule Yepp Maxi Child Seats or Seatpads

Bike Weight: 82 lbs

Fits Riders: Adjustable cockpit to fit most (4'11" – 6'5")

Suspension: Front Fork

Storage: Stands vertically for small-footprint storage; foldable handlebars

Handling: Ultra-stable

Bike Frame: Step-through with a low center of gravity; EFBE Prüftechnik GmbH Tested

Battery Range: Up to 60 miles on a single charge; Bosch battery certified to UL 2849 standards

Motor Wattage: 750W of peak power

Length: ~70"

Get in touch for expert advice, book a test ride, or drop by your local store

Popular Accessory Bundles

School Runner

$479.95

Thule Yepp Child Seat: Secures up to. 48.5lbs.
Tern Mad Pad: Comfort seat for ages 5-10.
Tern Clubhouse: Secure, enclosed cabin.

Commute Crusher

$405.00

Tern Hauler Rack: Front rack handles up to 44lbs.
Tern 52 Panniers: 104L of rain-resistant storage.
Tern Sidekick Wide Decks: Rock-splid cargo support.

FAQS

What does "Exfleet Certified" mean?

A Wombi Exfleet bike is a pre-loved e-bike (from our subscription fleet) that has undergone a comprehensive 50-point professional inspection. Our expert mechanics replace any components with more than 50% wear, including chains, brake pads, and tyres, ensuring the electric bike performs like new.

How is an Exfleet Certified bike different from a "used" e-bike?

Buying a "used" electric from a private seller is a gamble. Wombi Exfleet takes the risk out of the equation. Every bike we sell:

Includes a professional battery health report.
Has been deep-cleaned and safety-certified.
Comes with a limited warranty (unlike most private sales).
Was maintained by Wombi professionals throughout its entire life.

What is the cosmetic condition of these pre-owned e-bikes?

We categorize our bikes based on their visual inspection. While all bikes are mechanically 100% sound, some may have minor scratches or paint chips from their previous "subscription life". We provide clear, high-resolution photos of any specific cosmetic imperfections on each listing so there are no surprises.

How do I know the battry is still good?

The battery is the heart of any e-bike. We test every Bosch PowerPack using official diagnostic tools. We only list bikes that retain at least 80-90% of their original capacity. You will receive a diagnostic printout confirming the battery's health with your purchase.

Are the electrical systems safe?

Yes. Wombi exclusively uses Bosch e-bike systems, which are UL 2349 certified. This is the gold standard for electrical and fire safety in the US, providing peace of mind for you and your family.

Does my Certified ExFleet e-bike come with a warranty?

Yes! Every Wombi Refurbished bike includes a 1-year limited warranty on the motor, battery, and frame. We stand behind our refurbishment process and want you to ride with confidence.

Can I still get service from Wombi after I buy?

Absolutely. Even after you transition from a subscriber to an owner, you remain part of the Wombi family. You can book maintenance at our local hubs (Seattle, SoCal, or Bay Area) and access our "Rider Success" team for any questions.

Ownership & "Flex-to-Own"

Can I use my past subscription payments towards an Exfleet bike?

If you are a current Wombi subscriber, you may be eligible for Flex-to-Own credits. Check your lease agreement or contact our team to learn how your "subscription equity" can be applied toward the purchase of an Exfleet model.