Rattan LF Ultra Overview
The Rattan LF Ultra is the step-through version of the LM Ultra long-range folding fat tire electric bike, sharing the same 48V 40.5Ah battery, 1000W sustained motor, and 120-mile range in a low step-through frame that makes mounting and dismounting effortless for all riders. The step-through design is the primary practical difference: instead of swinging your leg over a high top tube, you step through the open frame from the side, which is faster, more comfortable in any clothing, and significantly more accessible for riders with limited flexibility.
Everything that makes the LM Ultra exceptional transfers directly to the LF Ultra: the 1800W peak motor for confident hill-climbing, dual 180mm hydraulic disc brakes with automatic cutoff, full suspension combining front fork and rear seatpost, CST 20 x 4.0 fat tires, and a 10-second fold to a compact 38.2 x 18 x 33.5 inch footprint. Available in Black and Red with accessory bundle options including trailer, extra battery, and baskets, the LF Ultra suits any rider who wants long-range folding fat tire capability with the most accessible frame design available.
At Electric Bikes Paradise, we carry the full Rattan lineup as an authorized dealer. Every Rattan purchase comes with full manufacturer warranty support, free shipping, no sales tax, and our Low Price Guarantee. Our team is available Monday through Friday, 9am to 5pm MST at +1 (307) 429-0021 to help you choose the right configuration.
Key Features and Benefits
- Step-Through Frame: The low, open step-through design lets you mount by stepping through the frame from the side rather than swinging your leg over a high top tube. This is faster and more comfortable in all clothing and significantly more accessible for older riders, those with limited flexibility, and anyone who dismounts frequently throughout the day.
- 1000W Motor, 1800W Peak: The same 1000W sustained, 1800W peak brushless rear hub motor as the LM Ultra delivers 32 MPH and confident hill-climbing on any terrain. The step-through frame does not limit motor performance in any way.
- 48V 40.5Ah Battery, 120-Mile Range: The industry-leading 40.5Ah battery provides up to 120 miles of pedal-assist range, removing range as a practical constraint for virtually any daily or recreational riding scenario.
- Dual 180mm Hydraulic Disc Brakes: Front and rear hydraulic disc brakes with automatic motor power cutoff deliver consistent, powerful stopping in all weather conditions with minimal lever effort required.
- Full Suspension: Front fork and rear suspension seatpost work together to absorb road and trail impacts for comfortable, controlled riding on varied surfaces throughout long rides.
- CST 20 x 4.0 Fat Tires: Puncture-resistant CST fat tires provide all-terrain traction on pavement, gravel, sand, and snow in a compact 20-inch wheel format that folds efficiently with the frame.
- Folds in 10 Seconds: The frame collapses tool-free in 10 seconds to 38.2 x 18 x 33.5 inches for practical storage in cars, RVs, and apartments.
- Rear Passenger Seat Included: Standard rear seat, backrest, and footrest allow carrying a second rider within the 300 lb total payload capacity.
Who Is This For?
The Rattan LF Ultra suits every rider who wants the LM Ultra’s exceptional range and performance in a more accessible frame configuration. Older riders who find high-step frames difficult to mount, riders who commute in professional clothing or skirts, and anyone who values quick, easy mounting and dismounting throughout a day of riding will find the step-through design a genuine daily convenience. The frame design choice does not involve any performance trade-off on a folding fat tire bike of this specification.
Couples and riding partners who share a bike will find the step-through format universally accommodating across different body types and flexibility levels. Available in Black and Red, the LF Ultra offers color options that provide genuine visual variety alongside the practical step-through advantage. Riders who have avoided step-through bikes because of concerns about frame rigidity can be reassured: on a folding fat tire e-bike of this design, the step-through frame provides equivalent real-world stiffness for all typical riding loads.
Performance and Ride Quality
The LF Ultra’s motor, battery, and suspension performance is identical to the LM Ultra. The 1800W peak motor handles hills and acceleration with authority, the 40.5Ah battery provides the same 120-mile range capability, and the full suspension system delivers the same comfort on rough terrain. The step-through frame does not affect any of these performance characteristics for typical riding loads.
Design and Build Quality
The LF Ultra uses the same high-quality aluminum construction as the LM Ultra in the step-through frame configuration. The visual difference is immediately apparent: the open, low frame creates a more accessible, inviting aesthetic compared to the high-step alternative. Available in Black and Red, both colors work well for a commuter and recreational bike that riders encounter in a variety of settings.
Step-Through vs High-Step Folding Electric Bikes
The choice between step-through and high-step frames on a folding electric bike is entirely about mounting preference and daily convenience. Step-through frames are better for riders who mount and dismount frequently, wear restrictive clothing, have limited flexibility, or simply prefer the ease of stepping through the frame. High-step frames offer marginally more structural stiffness at their highest stress points under maximum load, which is detectable in dedicated performance testing but generally not noticeable in everyday folding e-bike use. For the riding loads and terrain these bikes are designed for, choose based on which mounting style you prefer for your daily routine.
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 |
| Top Speed | 32 MPH |
| Max Payload | 300 lbs |
| 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 |
| Folded Size / Fold Time | 38.2 x 18 x 33.5 inches / 10 seconds |
| Available Colors | Black, Red |
| Available Accessories | Trailer, Extra Battery 40.5Ah, Front Basket, Back Basket, Front and Back Baskets |
The LF Ultra and LM Ultra share every specification: 48V 40.5Ah battery, 1000W sustained motor with 1800W peak, dual 180mm hydraulic disc brakes with automatic power cutoff, full suspension combining front fork and rear seatpost, CST 20 x 4.0 fat tires, 10-second fold, and standard rear passenger seat. The step-through frame is the only difference. For riders who stop frequently throughout a day, wear professional clothing or gear, or simply prefer the ease of stepping through the frame from the side, the LF Ultra provides the complete Ultra specification in a more accessible format. Neither model compromises on any performance metric relative to the other.
Battery care for the large 40.5Ah pack is worth understanding upfront. Charge to 80 to 90 percent for regular daily use rather than to 100 percent unless maximum range is needed for a specific long ride. Avoid storing below 20 percent charge for extended periods. Keep the battery indoors when temperatures drop below freezing to maintain cell performance. The hydraulic disc brakes require pad inspection every few months and an occasional bleed service every one to two years depending on use frequency. Both are straightforward tasks at any qualified bike shop. The motor and electrical system are sealed and require no user maintenance. Electric Bikes Paradise stocks genuine Rattan accessories and can advise on compatible add-ons for the LF Ultra throughout your ownership. Contact us at +1 (307) 429-0021 Monday through Friday, 9am to 5pm MST.
Frequently Asked Questions
What is the range of the Rattan LF Ultra?
Up to 120 miles per charge in pedal-assist mode. Actual range varies based on terrain, rider weight, assist level, and riding speed.
Is the Rattan LF Ultra suitable for hills?
Yes. The 1000W Sustained, 1800W Peak Brushless Rear Hub provides confident hill-climbing performance. Higher assist levels maintain comfortable speed on grades, and the gearing adds further climbing support.
Does the Rattan LF Ultra come assembled?
The bike ships partially assembled. Final assembly takes approximately 20 to 30 minutes with the included tools and instructions.
What is the weight limit for the Rattan LF Ultra?
The maximum payload capacity is 300 lbs. Contact our team at +1 (307) 429-0021 for any additional capacity questions.
Does Electric Bikes Paradise offer financing for the Rattan LF Ultra?
Yes. Flexible financing options are available. Visit our financing page for current terms and options.
Can I ride the Rattan LF Ultra in the rain?
Yes. The bike has standard weatherproofing for light to moderate rain. Hydraulic disc brakes maintain performance in wet conditions. Avoid submerging electrical components and store the bike indoors when not in use.
What accessories are available?
Available options vary by configuration. See the product listing for the full range of accessory bundles, or contact our team at +1 (307) 429-0021 to discuss the right configuration for your use case.
How does long-term battery care affect range?
Storing the battery at 40 to 80 percent charge for extended non-riding periods, keeping it indoors in cold weather, and avoiding regular full depletion all preserve capacity over hundreds of charge cycles. Following these practices significantly extends the usable life of the battery compared to ignoring them.
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. Our team is available Monday through Friday, 9am to 5pm MST at +1 (307) 429-0021 to answer questions and support your LF Ultra ownership from day one. The LF Ultra is one of the longest-range folding step-through electric bikes available in 2026 and represents genuine value for riders who want to eliminate range and charging concerns from their daily electric bike use.