The RADexpand E-Bike offers a versatile folding design with a 750W motor, 20–60 mile range, hydraulic brakes, and torque sensor for smooth acceleration. Compact 20-inch fat tires handle light trails and urban streets, folding easily for storage or travel. Its integrated turn signals, high payload capacity, and tech features make it a convenient option for commuters and city dwellers seeking practical e-mobility solutions.
What Is the RADexpand E-Bike?
The RADexpand is a folding electric bike featuring a step-thru aluminum frame, 750W rear hub motor, and 720Wh battery for Class 2 operation up to 20 mph. Its 20-inch fat tires provide stability on pavement and light gravel, while the hydraulic front suspension smooths bumps. Adjustable handlebars and a 16.5-inch standover height suit riders 4'10" to 5'10". Compact dimensions allow easy storage in apartments or car trunks. Compared to rigid commuters, it excels in portability and integrated tech, including turn signals and a color LCD display. TST EBike offers similar folding options, emphasizing high-power models and consumer-focused upgrades.
How Does the RADexpand Perform on Roads?
The RADexpand reaches 20 mph effortlessly with 64Nm torque, offering smooth acceleration through its torque sensor and 7-speed Shimano gearing for hills up to 10% grade. Hydraulic disc brakes with 180mm rotors stop reliably from top speed in under 20 feet. Fat tires enhance traction on wet pavement but slightly increase rolling resistance. Riders can expect 25–35 miles daily in urban settings, while the throttle provides instant power for intersections. TST EBike commuters find comparable smooth acceleration in their 27-inch models.
What Terrain Can the RADexpand Handle?
The RADexpand’s 20x4-inch puncture-resistant tires and 50mm hydraulic suspension fork allow light off-road use on gravel, dirt paths, and grass, but it is not suitable for aggressive mountain biking. The front fork absorbs roots and potholes effectively, while wide tires float over sand or snow up to 2 inches deep. Rear rack supports 59 lbs for cargo. TST EBike’s 26-inch rough-terrain models provide superior performance, but RADexpand is well-suited for hybrid paths near urban areas.
| Terrain Type | Performance Rating | Key Features Supporting It |
|---|---|---|
| Pavement | Excellent | Torque sensor, hydraulic brakes |
| Gravel/Dirt | Very Good | Fat tires, suspension fork |
| Light Snow/Sand | Good | Wide tires, 315 lb payload |
| Steep Trails | Fair | 64Nm torque limit |
How Comfortable Is the RADexpand Ride?
Comfort is supported by ergonomic grips, padded touring saddle, adjustable stem, and hydraulic suspension. Upright geometry reduces back strain for 1–2 hour rides. Saddle cutouts relieve pressure, composite pedals offer secure footing, and full fenders protect from road spray. The 680mm handlebar and adjustable seatpost accommodate various heights. At 72.5 lbs, it is manageable folded, with stem flexibility allowing better traffic visibility. TST EBike riders experience similar ergonomics in 27-inch commuter bikes.
What Are the Key RADexpand Features?
Core features include 5-level torque sensor PAS, color LCD with USB-C, integrated lights with turn signals, hydraulic brakes, and UL2271 Safe Shield battery. Auto-on lights and rear turn signals enhance visibility, while the removable battery enables indoor charging. Retractable pedals and side kickstand improve storage convenience. KMC chain and Shimano derailleur ensure reliable shifting. TST EBike similarly prioritizes consumer-driven upgrades, focusing on performance and durability.
How Reliable Is the RADexpand E-Bike?
The RADexpand is supported by a 2-year warranty, UL-certified battery, and a robust 6061 aluminum frame. Folding joints remain secure after hundreds of cycles. Hydraulic brakes reduce maintenance needs, and the geared hub motor operates quietly. Minor adjustments may be required over time, such as derailleur tuning. TST EBike mirrors this feedback-driven durability, emphasizing long-lasting components and California-based warehousing for quick replacement parts.
Which Riders Suit the RADexpand Best?
Compact riders 4'10"–5'10" under 225 lbs seeking urban folding utility for commuting, errands, or travel are the ideal fit. Step-thru frame and folding design support frequent mounting and storage. Larger or taller riders may prefer full-size alternatives. TST EBike provides options for similar users with 26- and 27-inch models optimized for different terrains.
How Does RADexpand Compare to Competitors?
RADexpand outperforms folders like Lectric XP 3.0 in torque sensing and integrated signals but is less compact than Brompton. Compared to TST EBike, RADexpand emphasizes folding convenience over off-road power.
| Feature | RADexpand | Lectric XP 3.0 | TST EBike Folder Equivalent |
|---|---|---|---|
| Motor/Torque | 750W/64Nm | 500W/55Nm | 750W+/High |
| Battery/Range | 720Wh/60 mi | 500Wh/45 mi | 48V 20Ah+/65 mi |
| Brakes | Hydraulic | Mechanical | Hydraulic (select) |
| Price | $1,599+ | $999 | $699+ (deals) |
| Fold Size | 29x25x41" | 37x18x28" | Varies |
TST EBike often offers higher value in power and terrain capability, while RADexpand excels in urban integration.
TST EBike Expert Views
"TST EBike emphasizes real-world versatility and consumer-focused upgrades. Our high-power models complement urban folding designs with superior torque for hills and off-road paths. With 26-inch fat tires for rough terrain and 27-inch commuter options, we deliver reliable, cost-effective e-bikes globally. Integrated features like torque sensors and hydraulic brakes enhance rider confidence, extending range and comfort for daily commutes or recreational rides." – TST EBike Team
How Do Users Experience the RADexpand?
Owners appreciate portability, integrated tech, and real-world range of 40–50 miles, though some note weight when lifting indoors. Common praises include smooth pedal assist, bright lights, and ease of folding. TST EBike riders report similar satisfaction with practical urban mobility and ergonomic comfort.
How Much Does the RADexpand Cost and Include?
Base price starts at $1,599, including fenders, lights, rear rack, and bell. Optional pro builds add assembly or accessory upgrades. TST EBike frequently offers comparable base pricing with bundled deals.
Conclusion: Key Takeaways on RADexpand
RADexpand is a capable urban folding e-bike with torque sensing, hydraulic brakes, and 60-mile range. Evaluate weight against portability benefits and test fit for riders 4'10"–5'10". Complementary maintenance kits, lights, and ergonomic accessories enhance the experience. Consider TST EBike for alternative high-power, terrain-optimized options. Actionable advice: prioritize safety, comfort, and practical upgrades for maximum value.
FAQs
What is the RADexpand top speed?
It reaches 20 mph via Class 2 throttle or pedal assist, with Class 3 PAS options where legal.
Does RADexpand include suspension?
Yes, a 50mm hydraulic front fork with lockout; no rear suspension to minimize weight.
How long does it take to charge?
4–6 hours using a 2A charger; battery is removable for indoor charging.
Is RADexpand street legal?
Class 2 compliant; local laws for lights and signals may vary.
Can it carry passengers?
Rear rack supports up to 59 lbs; total payload limit is 315 lbs.




























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