Rattan LM Ultra Overview
The Rattan LM Ultra is a long-range folding fat tire electric bike built around a specification that stands out in its category: a 48V 40.5Ah lithium battery delivering up to 120 miles of pedal-assist range on a single charge. This is not a modest claim. The 40.5Ah capacity is among the largest available on any folding electric bike at any price point, and it fundamentally changes how you plan and use the bike. Instead of checking the battery indicator every few miles, you ride with confidence that the power will be there when you need it, however far you go.
Powered by a 1000W sustained, 1800W peak brushless rear hub motor, the LM Ultra reaches 32 MPH and handles hills, trails, and mixed terrain with confident, sustained power. The CST 20 x 4.0 inch fat tires provide all-terrain traction on pavement, gravel, sand, and snow. A full suspension setup combining a front fork and rear seat suspension smooths out rough terrain for comfortable riding on long days. Dual 180mm hydraulic disc brakes with automatic power cutoff deliver short, confident stops in all conditions.
The LM Ultra folds in 10 seconds to a 38.2 x 18 x 33.5 inch compact footprint, making it practical for car trunks, RV storage, and apartment living. It comes standard with a rear passenger seat, backrest, and footrest for carrying a second rider within the 300 lb total payload capacity. Available in Black and Gray with a choice of accessories including trailer, extra battery, front basket, back basket, and combined front and back baskets, the LM Ultra is a genuinely versatile platform for any rider who prioritizes range above everything else.
Key Features and Benefits
- 1000W Motor, 1800W Peak: The sustained 1000W brushless rear hub motor delivers powerful, consistent performance at 32 MPH across flat terrain, hills, and mixed off-road surfaces. The 1800W peak handles demanding acceleration and steep climbs without motor strain, providing a performance reserve that lower-peak motors cannot match in demanding situations.
- 48V 40.5Ah Long-Range Battery: The industry-leading 40.5Ah capacity at 48V stores approximately 1944Wh of energy, enabling up to 120 miles of pedal-assist range. This capacity level removes range as a practical constraint for nearly any riding scenario, from long-distance commuting to full-day adventure rides. The removable design allows indoor charging without bringing the entire bike inside.
- Dual 180mm Hydraulic Disc Brakes: Front and rear 180mm hydraulic disc brakes with automatic motor power cutoff provide consistent, powerful stopping in all weather conditions. The hydraulic system delivers superior modulation and performance compared to mechanical disc brakes, with the automatic cutoff preventing motor resistance during braking for shorter stops.
- Full Suspension: The combination of a front suspension fork and rear suspension seatpost absorbs shocks from rough terrain, road irregularities, and trail obstacles. Full suspension significantly reduces rider fatigue on longer rides and improves control on unpredictable surfaces.
- CST 20 x 4.0 Fat Tires: Puncture-resistant CST fat tires provide stable, confident traction across pavement, gravel, sand, and snow. The 4.0-inch width distributes weight over a wider contact patch for grip on surfaces where narrower tires lose traction.
- Folds in 10 Seconds: The compact folding mechanism collapses the frame to 38.2 x 18 x 33.5 inches in seconds without tools. This makes the LM Ultra practical for multi-modal commuting, road trip storage, and apartment living where a full-size bike would be impractical.
- Rear Passenger Seat Included: A standard rear seat, backrest, and footrest allow carrying a second rider within the 300 lb total payload, adding practical utility for couples, parents, and anyone who regularly rides with a companion.
- Shimano 7-Speed Gearing: Seven gears provide a useful range for optimizing pedaling efficiency across flat roads, hills, and off-road terrain alongside the motor assist.
Who Is This For?
The Rattan LM Ultra is built for riders who have been frustrated by inadequate range on other electric bikes and want the freedom to ride without planning around charging stops. If your typical riding includes long commutes, full-day recreational rides, or multi-stop daily trips where stopping to charge is impractical, the 120-mile range changes the entire experience. You stop thinking about the battery and start thinking about where you want to ride.
Multi-modal commuters who combine cycling with other transit will find the folding format and 32 MPH top speed a practical daily transport tool. Adventure riders who explore varied terrain including trails, gravel paths, and city streets will find the fat tires and full suspension a capable platform for mixed riding. Couples and riders who regularly carry a passenger will appreciate the standard rear seat that makes tandem riding available from the first day of ownership.
Riders upgrading from shorter-range electric bikes who have experienced range anxiety and want to eliminate it entirely will find the LM Ultra’s 40.5Ah battery a transformative upgrade. For anyone who has ever cut a ride short because of a low battery, or planned a route specifically to avoid running out of power, the LM Ultra removes that constraint completely.
Performance and Ride Quality
The 1800W peak motor delivers a riding experience that is noticeably more powerful than typical 750W to 1000W alternatives. Acceleration from a stop is quick and confident, and the motor maintains its output on sustained climbs without the fade that lower-power motors exhibit under extended load. At 32 MPH, the LM Ultra is among the faster fat tire folding bikes available, covering commute distances efficiently and keeping pace with light traffic on roads where cycling is permitted.
The full suspension system works particularly well for a folding bike. Many folding e-bikes sacrifice suspension entirely or use a basic front fork. The LM Ultra’s combined front fork and rear seatpost suspension provides genuine comfort improvement on rough pavement, gravel, and light trail terrain. The fat tires add a natural cushioning effect from their high air volume, complementing the mechanical suspension for a comfortable ride on varied surfaces.
Design and Build Quality
The LM Ultra uses a high-step aluminum folding frame engineered for the stresses of daily use with a powerful motor and a large, heavy battery. The 40.5Ah battery is substantial in size and weight, integrated into the frame to keep the center of gravity as low and centered as possible. Available in Black and Gray, both colorways present a clean, purposeful aesthetic suited to the bike’s performance positioning. The component quality throughout reflects the LM Ultra’s position as Rattan’s premium folding model.
Choosing a Long-Range Folding Fat Tire Electric Bike
The defining specification of a long-range folding electric bike is battery capacity measured in watt-hours. Most folding e-bikes use batteries in the 500 to 700Wh range, providing 30 to 50 miles of typical range. The LM Ultra’s 1944Wh (48V 40.5Ah) battery triples or quadruples this, which is the difference between a bike that requires daily charging and one that goes a week between charges for typical daily use. For riders who use their bike intensively or over long distances, this capacity advantage directly translates to operational freedom.
Folding mechanism quality matters as much as the fold size. A fold that takes 60 seconds and requires tools is practically useless for multi-modal commuting. The LM Ultra’s 10-second tool-free fold is fast enough to be genuinely practical at a transit station, in a parking garage, or beside a desk. When combined with the 120-mile range, it creates a bike that removes almost every practical barrier to daily electric bike use.
Full Technical Specifications
| Motor | 1000W Sustained, 1800W Peak Brushless Rear Hub |
|---|---|
| Battery | 48V 40.5Ah Lithium-Ion, Removable |
| Range | Up to 120 miles per charge (pedal-assist) |
| Top Speed | 32 MPH |
| Wheel Size | 20 x 4.0 inches (CST Fat Tires) |
| Gears | Shimano 7-Speed |
| Brakes | 180mm Hydraulic Disc Brakes, Front and Rear, with Auto Power Cutoff |
| Suspension | Front Fork + Rear Suspension Seatpost |
| Max Payload | 300 lbs |
| Folded Size | 38.2 x 18 x 33.5 inches |
| Fold Time | 10 seconds |
| Passenger Seat | Included (Rear Seat, Backrest, Footrest) |
| Available Colors | Black, Gray |
| Available Accessories | Trailer, Extra Battery 40.5Ah, Front Basket, Back Basket, Front and Back Baskets |
Frequently Asked Questions
What is the range of the Rattan LM Ultra?
The Rattan LM Ultra delivers up to 120 miles per charge in pedal-assist mode using the 48V 40.5Ah battery. This is the rated range under favorable conditions at moderate assist levels. Real-world range depends on terrain, rider weight, assist level, riding speed, and temperature. Even in demanding conditions, most riders will see 70 to 90 miles of practical range per charge, making it one of the longest-range folding electric bikes available.
Is the Rattan LM Ultra suitable for hills?
Yes. The 1000W sustained motor with 1800W peak provides strong, confident hill-climbing performance. Moderate to steep urban grades are handled without difficulty, and the Shimano 7-speed gearing allows additional cadence optimization for sustained climbing efficiency. This is one of the more capable folding fat tire bikes available for hilly terrain.
Does the Rattan LM Ultra come assembled?
The bike ships partially assembled. Final assembly takes approximately 20 to 30 minutes using the included tools and instructions. Most riders complete setup without technical experience.
What is the weight limit for the Rattan LM Ultra?
The total payload capacity is 300 lbs, covering the combined weight of the rider, passenger, and any cargo. With the rear passenger seat included, this allows two riders within the total weight limit.
Does Electric Bikes Paradise offer financing for the Rattan LM Ultra?
Yes. Flexible financing options are available. Visit our financing page for current terms and options.
What accessories are available for the Rattan LM Ultra?
The LM Ultra is available with a trailer, an extra 40.5Ah battery (effectively doubling range), front basket, back basket, and combined front and back baskets. These are selected at purchase. Contact our team at +1 (307) 429-0021 to discuss which configuration best suits your intended use.
Can I ride the Rattan LM Ultra in the rain?
Yes. The LM Ultra has standard weatherproofing suitable for riding in rain and wet conditions. The hydraulic disc brakes maintain performance in wet weather, which is one of their key advantages over mechanical alternatives. Avoid submerging the electrical components and store the bike indoors when not in use.
How does the extra battery option work?
The extra 40.5Ah battery option provides a second battery unit that mounts to the bike and effectively doubles your available range from 120 to approximately 240 miles. The batteries can be used sequentially, switching to the second when the first is depleted. This is the right choice for riders who need maximum range for long-distance touring, multi-day adventures, or extended daily use without charging access.
Assembly and Maintenance
Rattan electric bikes ship partially assembled with the major components factory-installed. Final assembly involves attaching the handlebar, front wheel, and pedals using the included tools and instructions. Most riders complete setup in 20 to 30 minutes. Before your first ride, verify all bolts are tightened, confirm brakes engage firmly, and charge the battery to full. If your model includes a torque sensor, take a few minutes on a low-traffic route to get familiar with how the sensor responds to your pedaling input before riding in demanding conditions.
For long-term performance, keep the chain clean and lubricated every 100 to 200 miles or after wet rides. Check tire pressure before every significant ride. Inspect brake pads periodically and replace when worn. Have the drivetrain and suspension serviced annually at a qualified bike shop. The motor and battery require no user maintenance beyond keeping electrical connections clean and dry. Store the battery at 40 to 80 percent charge when not riding for extended periods, and keep it indoors in cold weather to maintain performance and extend its service life.
Warranty Information
All products sold at Electric Bikes Paradise come backed by the manufacturer warranty. We also stand behind every purchase with our customer-first support team. If you experience any issues, contact us at +1 (307) 429-0021 or visit our Warranty Policy page for full details.
Why Buy from Electric Bikes Paradise?
At Electric Bikes Paradise, we specialize exclusively in electric bikes and carry the full Rattan lineup as an authorized dealer. Every purchase comes with full manufacturer warranty support, genuine Rattan accessories, and dedicated customer service from our team. We know these products thoroughly and can help you choose the right model and configuration for your specific riding needs.
Every order ships free to the continental United States with no sales tax added at checkout. Our Low Price Guarantee ensures you always get the best available price, and our hassle-free returns policy means you shop with complete confidence. Flexible financing options make premium electric bikes accessible without a large upfront payment. Our support team is available Monday through Friday, 9am to 5pm MST at +1 (307) 429-0021.
At Electric Bikes Paradise, we make it easy to get the best electric bike at the best price. Every order ships free with no sales tax, and our Low Price Guarantee means you never overpay. Shop with confidence knowing our expert team is available Mon-Fri 9am-5pm MST to answer your questions. Ready to ride? Explore financing options or contact us today.