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Jasion

Jasion Thunder Pro Fat Tire Electric Bike 2000W

  • Lithium Battery Energy Content: 624 Wh
  • Electric Assist Type: pedal assist
  • Bicycle Drivetrain Type: Chain Drive
  • Bicycle Gear Shifter Type: Twist Grip

Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

Strong spec sheet on paper, including a 1040Wh battery and 2000W peak motor, but the only review reports a bike arriving damaged with no working brakes, so this is not a purchase to make on specs alone.

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ASIN: B0G14CLZHVCategory: Electric Bicycles

More from this brandAll Jasion electric bicycles

Overview

The Jasion Thunder Pro is a 26 inch fat tire electric bike built around a 2000W peak motor and a 1040Wh (52V 20Ah) removable battery, aimed at adult riders wanting higher power and a rated 500 lb load capacity.

The spec sheet leans toward performance, with a claimed 0-20mph time under 5 seconds and a 35mph top speed, but the only review on file describes a bike that arrived damaged with brakes not working, which is worth weighing heavily against the marketing claims.

  • 2000W peak brushless motor
  • 52V 20Ah (1040Wh) removable battery
  • 24-month protection plan on motor, battery, and controller
  • Ships mostly pre-assembled per the listing

Who it's for

Aimed at larger or taller adult riders, 5.5 to 7.2 feet per the listing, who want high peak power and long PAS range. Given the sole review reporting shipping damage and brake trouble, cautious buyers may want to confirm current fulfillment quality before ordering.

Pros and cons

Pros
  • 1040Wh battery for long PAS range
  • Full suspension and hydraulic disc brakes specified
  • 500 lb rated load capacity
  • Fast charge to 80 percent in 5 hours claimed
Cons
  • Sole review reports bike arrived damaged, brakes not working
  • Reviewer called customer service unhelpful with the claim

Performance notes

Jasion lists 115 newton-meters of torque from the 2000W peak brushless motor, a 64-signal pedal sensor for smoother assist, 7-speed gearing, and 5 PAS levels. Full suspension and hydraulic oil disc brakes are specified for control on climbs and descents.

Specifications

BrandJasion
Capacity & performance
Bicycle Drivetrain TypeChain Drive
Bicycle Gear Shifter TypeTwist Grip
Power & efficiency
Lithium Battery Energy Content624 Whlower than 60% of 221 electric bicycles
Power SourceElectric Motor
Construction & materials
Wheel MaterialRubber
Warranty & support
Warranty TypeFull
Other details
Electric Assist Typepedal assist

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Frequently asked questions

What is the top speed of the Jasion Thunder Pro?

The listing states a top speed up to 35mph from the 2000W peak motor.

How far can the Jasion Thunder Pro travel on a charge?

Jasion lists up to 90 miles in PAS mode and 35 miles on pure electric power from the 1040Wh battery.

What did the one review on the Jasion Thunder Pro report?

The reviewer said the bike arrived damaged and missing parts, with brakes not working, and described customer service as unresponsive to the issue.