What is the Difference Between the Tern HSD and GSD Ebike?

Tern recently revealed a new HSD ebike capable of going 28 mph. Although the aforementioned speed is rather impressive for an ebike, acceleration is not the only factor to evaluate when shopping for an electric bike. Taking this into consideration, let’s compare the HSD model with older Tern variations, known as GSD.


Features of Tern Ebikes


Tern electric bicycles are made for those who want to replace traditional automobiles with eco-friendly e bikes. To achieve this somewhat daunting feat, the ebike manufacturer included the features below.


  • Keep cargo and rider weight low to the ground to make transport easier
  • Abus frame lock makes unsupervised quick stops more secure
  • Adjustable cockpit fits riders with heights ranging from 4’11” to 6’5″
  • Provides wobble free hauling
  • Foot rest for passengers
  • Designed to help riders put their feet on the ground at stops
  • Atlas Lockstand keeps bike steady when unloading the device
  • Bosch Cargo Line motor provides up to 85 Nm of torque 400% support on hills
  • Can be parked vertically 
  • Strong, sturdy, easy-step frame
  • Rear stop brake light
  • Front and back fenders
  • Folds flat
  • Rechargeable battery


It is important to note that both the HSD and GSD share the aforementioned attributes. Due to this, electric bike enthusiasts may be curious as to what the differences are between the two models.


Benefits of Tern GSD Electric Bikes


Tern GSD ebikes weigh significantly more than its counterpart. Nevertheless, those extra pounds make GSD e bikes more versatile than HSDs in regards to hauling and riding potential. 

Here is how it works. 


Since the back rack is integrated into the ebike frame, cyclists can safely haul 440 lbs. To put that into perspective, GSDs make it possible for cyclists to safely transport two children, whereas the HSD can only handle one. In addition, the GSD has a built-in component for an extra battery. As a result, cyclists can traverse over 150 miles without needing to recharge. Other noteworthy features are listed below.


  • Dedicated trailer mount
  • Custom suspension fork
  • Suspension seatpost for comfy ride
  • Chainguard
  • Magura MT-5 4-Piston Disc Brakes


Now that we know what the Tern GSD has to offer, let’s compare the e bike to the HSD model.


Differences Between the Tern HSD and GSD


As we mentioned above, the HSD is lighter than the GSD. To achieve the weight difference, Tern made the HSD frame shorter than the GSD and added the cargo rack on after the frame was created. Due to these distinct differences, the HSD can only handle transporting 370 lbs total, which is the equivalent of one child or an adult. 


Furthermore, without the extra battery, trip distance between charges is a paltry 48 miles. To make up for the downsized hauling and riding potential, Tern added the items below.


  • Front-fork suspension
  • Fully upright riding position
  • Reflective tires and decals
  • Hydraulic disc brakes
  • Puncture resistant tires


Be sure to weigh the pros and cons of both models before committing to a purchase.


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