Rattan LF Ultra 1000W Folding Fat Tire Electric Bike – 48V 40.5Ah, Step-Thru, 20" Fat Tire, 2-Seater Long-Range
Buy today and pay in 4 or more payments starting at 0% APR with Shop Pay Installments.
Rates from 0–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers: affirm.com/licenses.
Will this bike fit me?
Made for riders 5'3" to 6'4" tall.
Near the top or bottom of that range? That's where fit matters most, so check with us before you order.
Still not sure? Call the Ride Desk at (855) 970-3574 with your height and inseam and we'll tell you straight.
Your Park & Ride Kit: $71 of gear, on us.
Two things most riders end up buying in the first month. With this bike, you won't have to.
Rattan Bike LockCoiled steel cable lock with a key. Loop it through the frame and wheel for quick stops.
$31FREE
Rattan Mirrors (Pair)See traffic behind you without turning your head.
$40FREE
How do I get my kit?
It ships with your bike automatically. Nothing to add, no code to enter, and it never adds a cent to your total. You'll see "Free Park & Ride Kit: Included" under your bike in the cart and on your order confirmation. It ships free and may come in its own box, so it can arrive a day or two apart from your bike.
One kit per bike, while kit supplies last.
Authorized Rattan dealerGenuine, brand-new bikes with full factory warranty
Every bike we sell is new and factory-sealed, from brands we're authorized to carry. You get the complete manufacturer warranty, exactly as intended.
Price match guaranteeFind it lower at another authorized dealer? We'll match it.
If another authorized Rattan dealer advertises this exact bike for less, send us the link and we'll match the price. Ask before you order, or within 7 days after your order and we'll refund the difference. See how price match works
1YR 1-year manufacturer warrantyIf something goes wrong, we handle the claim for you
Send the Ride Desk a message and a short video. We'll help figure out what's wrong and take the warranty claim from there, so you're never left sorting it out alone.
This bike is covered by a 1-year manufacturer warranty. Wear items aren't covered.
14-day returnsTime to make sure it's the right bike
Start a return within 14 days of delivery. The bike should have under 10 miles on it and be in its original box. See full return terms. If it arrives damaged or with a defect, contact us right away and we'll work it out with you.
Free delivery in 7–10 daysSignature required. Damaged in transit? We handle it.
Your bike ships FedEx or UPS to the lower 48, and a signature is required so it's never left on the porch. Before you sign, check the box. If it's torn or crushed, note it on the delivery slip and send us photos the same day. We'll take it from there with the carrier, and you can add Shipping Protection at checkout for full coverage.
Pay over timePay in 4 or more payments, starting at 0% APR
Choose Shop Pay Installments at checkout to see your options and rate before you commit. Checking your eligibility won't affect your credit score, and your card details are never shared with us.
Rates from 0–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required.
Ride it the day it arrivesArrives mostly assembled with step-by-step video
No bike shop needed. Most of the job is attaching the handlebar, front wheel, pedals, and seat, and the manufacturer's step-by-step video walks you through it. Charge the battery fully, set the riding mode for where you'll ride, and you're out the door. Stuck on a step? Send the Ride Desk a photo and we'll talk you through it.
Rattan LF Ultra 1000W Folding Fat Tire Electric Bike – 48V 40.5Ah, Step-Thru, 20" Fat Tire, 2-Seater Long-Range
See it in action
Real rides, field tests, and full reviews. Tap a video to play it right here.
Up to 120 Miles. Room for Two. Folds Into the RV.
Most e-bikes make you pick one thing.
Long range, or easy storage. A seat for a passenger, or a frame that folds. The Rattan LF Ultra refuses to choose. It carries one of the biggest batteries you'll find on any e-bike, seats two, and then folds down to fit a trunk, an RV bay, or boat storage. It's one bike for commuting, camping trips, and weekend rides with your partner on the back.
Here's what makes that possible.
The Battery: Why 40.5Ah Is a Big Deal
Battery size is measured in watt-hours, the size of the gas tank. A typical commuter e-bike carries 500 to 720 watt-hours. The LF Ultra's 48V 40.5Ah battery holds about 1,940 watt-hours, nearly three times that. Rattan rates it at up to 120 miles, with about 100 miles as an average, and the battery is removable so you can charge it indoors.
The trade-off is charging time: about 8 to 9 hours on the included 4A charger, so plan on plugging it in overnight. For most riders, though, that means charging once a week instead of every day or two.
Built for Two
The LF Ultra comes with a rear seat backrest and footrest for a passenger, and it's rated for 400 pounds of total payload. The step-thru frame makes it easy to get on and off, even with someone sitting behind you.
Power to Move Two People
The 1,000W rear hub motor peaks at 1,800 watts. Peak watts are the burst of power you feel when you accelerate or start up a hill, and that headroom matters when you're carrying a passenger. Use 5 levels of pedal assist through a Shimano 7-speed drivetrain, or the half-twist throttle. There's also a cruise control you can switch on for long, steady stretches.
Comfort, Folding, and Safety
- CST 20" × 4.0" fat tires with a puncture-resistant liner, about twice as wide as a normal bike tire, for cushion and grip on pavement, gravel, and light off-road.
- Rattan describes it as full suspension, with a suspension seat post that adds extra cushion under you.
- The frame and pedals fold for a trunk, RV bay, closet, or boat.
- Dual hydraulic disc brakes: strong, consistent stops with a light squeeze, even with two aboard.
- An automatic front light and a taillight with brake indicator.
- UL 2849 certified, the electrical safety standard that matters most for a battery this size charging in your home.
The Honest Part
- "Will I really get 120 miles?" That's the best case: one rider, flat ground, steady pedal assist. A passenger, hills, and heavy throttle use bring it down considerably.
- "How heavy is it?" 64 pounds for the bike plus a 22-pound battery, about 86 pounds total. It folds small, but lifting it into a trunk is a real lift. Take the battery out first.
- "How fast does it go?" Rattan lists a top speed of 32 MPH, above the 28 MPH limit for Class 3 e-bikes. Speeds above your local e-bike class limits are for private property only, so ride within the rules where you are.
- "Can two adults ride it?" Keep both riders plus any cargo under 400 pounds, and expect slower handling with two aboard.
Is This Your Bike?
The LF Ultra fits riders 5'3" to 6'4" and comes in Red and Black. Pick it if you want maximum range, room for a passenger, and a bike that folds for travel and storage.
Prefer a traditional step-over frame with the same giant battery? See the Rattan LM Ultra.
What Shows Up at Your Door
A factory-sealed Rattan LF Ultra, mostly assembled, with the 40.5Ah battery, 4A charger, fenders, rear backrest and footrest, front light, taillight, bell, and pedals. The free kit shown above ships with it. Rattan's 1-year warranty covers the bike, and our Ride Desk handles any claim for you. Shipping is free to the lower 48, delivery takes about 7–10 business days, and you have 14 days to return it if it isn't right.
Pick your color above, and bring someone along.
LF Ultra Questions
Is it safe to carry a passenger?
It's designed for two, with a rear backrest, footrest, and a 400-lb payload. Keep the combined weight within that rating, ride a little slower with two aboard, and check local rules on carrying passengers.
Will it fit in my RV?
It folds for RV bays, trunks, and boat storage. If you have a specific space in mind, send us the measurements and we'll help you check.
Why ride with VortexCycles
Buying an e-bike online takes trust. Here's exactly what you get when you buy from us.
Authorized dealer for Revi Bikes, EUNORAU, Rattan, HappyRun, and Yamee. Every bike is new, factory-sealed, and backed by the full manufacturer warranty.
Coverage, spelled out. Manufacturer warranties run 12 to 24 months depending on the brand, with EUNORAU frames covered for 10 years. They cover manufacturing defects, not wear parts like tires, brake pads, and chains. Each bike's exact coverage is listed on its page, and optional Product Protection adds accidental-damage coverage.
Help from start to finish. Get straight answers on fit, power, and setup before you order, and support with warranty claims after it arrives.
Ships free from a U.S. warehouse. Most bikes arrive in 7–10 business days by FedEx or UPS to the lower 48. Tracking is emailed as soon as your bike ships, and a signature is required on delivery.
The two minutes that protect your purchase. Before you sign, walk around the box. If it's torn, crushed, or punctured, write it on the delivery slip and photograph it before you open it. A clean signature makes a damage claim much harder to win. Some brands require damage reports right away, so open the box the day it arrives. We'll work the claim with you.
14-day returns. Start a return within 14 days of delivery. See full return terms.
Pay over time. Shop Pay Installments shows your options at checkout, and checking won't affect your credit.
Secure checkout. Payments run through Shopify's encrypted checkout, and we never see or store your full card number.
Questions? Chat with us, call (855) 970-3574, or email info@vortexcycles.bike, Monday–Friday, 9am–5pm CT. We reply to every email within one business day.
Quick answers
The questions riders ask us most, answered up front. Want to talk it through? The Ride Desk is glad to help by chat or at (855) 970-3574.
Is it safe to carry a passenger?
It's designed for two, with a rear backrest, footrest, and a 400-lb payload. Keep the combined weight within that rating, ride a little slower with two aboard, and check local rules on carrying passengers.
Will it fit in my RV?
It folds for RV bays, trunks, and boat storage. If you have a specific space in mind, send us the measurements and we'll help you check.
Why buy from Vortex instead of somewhere else?
It's the same factory-sealed Rattan bike with the full manufacturer warranty. What you get on top: the free gear kit shown above, our price match (find it lower at another authorized dealer and we'll match it), and the Ride Desk. If anything goes wrong, you send us a message and a short video and we handle the warranty claim with Rattan for you, so you're never stuck in a support queue alone.
When will it arrive?
Usually in 7–10 days. Shipping is free to the lower 48 by FedEx or UPS, and a signature is required so your bike is never left on the porch. You'll get tracking by email as soon as it ships.
How much assembly is there?
The bike arrives mostly assembled. You'll typically attach the handlebar, front wheel, pedals, and seat, and the manufacturer's step-by-step video walks you through it. Get stuck? Send the Ride Desk a photo and we'll talk you through it.
Will it fit me, and can I handle it?
Check the specs above and the size chart in the photos. If you're near the edge of the height range, between frame sizes, or unsure about the weight, send us your height and inseam. We'll tell you straight, even if the answer is a different bike.
How far will it really go?
The range in the specs is the manufacturer's test number, usually measured with a light rider in a low assist level on flat ground. Heavier riders, hills, wind, cold, and throttle use all shorten it. Tell us your weight and your usual route, and we'll give you a realistic estimate.
Is it legal where I ride?
The class rating and top speed are in the specs below. In most states, an e-bike ridden within its Class 1, 2, or 3 limits doesn't need a license, registration, or insurance, but trail and town rules vary, so check yours. Any higher-speed modes are for private property only.
How should I charge and store it?
Use the included charger, charge on a hard surface away from anything flammable, and unplug once it's full. For longer storage, keep the battery partly charged in a cool, dry place and top it up now and then. Your owner's manual has the exact guidance for your model.
Can I pay over time?
Yes. Choose Shop Pay Installments at checkout: buy today and pay in 4 or more payments starting at 0% APR. Checking your eligibility won't affect your credit score. Rates from 0–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required.
Talk to the Ride Desk. Real people who know these bikes. Tap the chat bubble or call (855) 970-3574, Monday–Friday, 9am–5pm CT.
