Riding home on a fat-tire e-bike with a dead battery pack gets a person thinking about a hub kit in a way no spec sheet prepares them for.
The bike itself is fine. Frame, brakes, tires, all of that already exists. What they need is a wheel that pushes.
That is the market a kit like this LARIDEN 20-inch unit lives in, and at 189.69 it sits in the cheap half of it.
The listing promises 1500 watts, a PAS sensor, an LCD and brake levers in the box, and a rating of 4.5 from a whole three people. Three. Every review on the page is short, every one carries the same helpful-vote count, and none of them mentions the things a buyer actually needs to know before a box this heavy lands on their porch.
So the questions this page leaves open are the ones worth asking first. What is really in the box, what the wattage claim can and cannot tell you, and how to check a kit whose reviews will not do it for you. That is the walk-through here.
The LARIDEN 20-inch 48V 1500W kit is a sensible box of parts at a checked price of 189.69: a rear wheel with the motor built in, a 48V controller, a PAS sensor, an LCD display and two brake levers, sized for a fat-tire 20-inch build.
The record behind it is another matter. The 4.5 stars come from three global ratings and three texts, two of them confirmed purchases and one not, and every text on the page carries the identical line that 2 people found it helpful. Nobody who wrote about this kit says a word about install time, range, top speed, controller heat, or how the pedal assist engages.
The honest verdict, then: the box list and the price make sense, and nothing else about the listing has been tested in public. It sits close to the middle of the 191 conversion kits we price, and the live figure renders in the specs box below.
What comes in the box, and the two things that do not
The kit includes a rear wheel with a built-in motor, a 48V controller with its full package, a PAS sensor, an LCD screen, and two brake levers, but it leaves out the battery and the tire. One owner, whose purchase-confirmed text carries the most endorsements in the record, says the box provides everything needed besides the frame. That matches the parts list line for line.
Because this kit uses a PAS sensor instead of a throttle, the motor only starts when you turn the pedals rather than when you twist a handle. Cadence sensors like this one read pedal rotation, not force, so the assist arrives as an on-and-off push rather than a ramp.
You should check whether your frame can take a 20-inch rear wheel with a 4-inch rim width, because that size belongs to fat-tire snow kits. The dropouts need room for a rear hub motor, and the chainstays need clearance for a 4-inch tire. A frame that cannot pass both checks is the wrong bike for this kit, whatever the wattage.
The wattage claim the page gives you no way to check
The listing claims a 1500W brushless motor that runs at over 82 percent efficiency, but the page never states a continuous amp rating for the controller, so there is no figure on it to check that claim against.
The arithmetic you can do runs the other way: 1500 divided by 48 is about 31 amps, which is the current the battery side has to feed to keep the wheel turning. That is the pairing trap.
Since these kits ship without a battery, your existing 48V pack or the budget pack you buy separately is usually the weak link if its BMS can't hold 31 amps continuous. You're betting that your gear can handle the draw this motor demands on a climb, and the listing gives you no controller label to read before you bet.
The hub motor design itself is the simple part: a motor inside the wheel drops the chains and belts, which makes the drive cheap and durable, at the cost of extra unsprung weight in the wheel and exposure to curb strikes, as the hub motor article puts it. Street legality is the other half.
Most US states cap a street-legal e-bike motor at 750 watts under the three-class framework, so a 1500W kit is a private-land or off-road product almost everywhere, per the electric bicycle laws page.
Weight, warranty, and the noise in the details table
The details table lists 330 lb in one row and 30 lb in another. A 30 lb box makes sense for a 20-inch rear hub motor, a controller, a display and hardware, while the bigger number reads like a maximum-load figure rendered into the wrong field.
Either way the listing contradicts itself and never explains which row to believe, which tells you the page was assembled for volume rather than by an engineer.
The warranty row just says "90" without a unit, so the page never actually states how long the coverage lasts. The part number reads "Motor Wheel" and the load index is 1, both auto-filled noise rather than specs. You're buying from a listing that did not check its own fields, so assume support runs the same way and photograph the box on arrival.
On visibility, the kit sits at number 380 in Bike Hubs, deep in a long tail where few buyers ever scroll.
How to check this kit when the reviews will not check it for you
When the box arrives, weigh it against the 30 lb claim before the return window closes, so a mismatch still gives you a way out. Count the parts against the Included Components row, because a kit with two brake levers, a PAS sensor and a controller package has enough pieces to count twice. Read the controller's label for its real continuous amp rating, which is the number the page omits.
You need a 48V battery with a BMS that handles about thirty-one amps continuous, otherwise a weaker pack will limit the throttle before it limits your range. The page leaves out that rating, so the check happens at your end, not the seller's.
Since every review shows the same helpful vote count, treat the votes as noise and read the words, because nothing on the page proves those votes came from readers. On price, this kit sits near the middle of the 191 kits we track, and the same table lists 1500W units below it, so call the price fair rather than a bargain. The live figure sits in the specs box.
Frequently Asked Questions
Does this kit come with a battery?
No, the kit doesn't include a battery because the listed components are only the wheel, controller, PAS sensor, LCD screen, and the two brake levers. You will need to purchase a separate power source to make the motor run.
Is this 1500W motor legal for public roads?
Since most US states cap street-legal e-bike motors at 750 watts, this kit is intended for private land or off-road use. Check the electric bicycle laws for the specific rules in your state.
What kind of battery do I need for this motor?
You need a 48V pack with a battery management system that supplies roughly 31 amps continuous, which is 1500 divided by 48. The page never states the controller's own amp rating, so match the battery to the arithmetic, not to a listing claim.
Should I worry about the vote counts on the reviews?
Treat the vote counts as noise and read the text, since all three reviews carry the same helpful count, including the one that isn't a confirmed purchase. Two of the three texts are confirmed purchases, and the most-endorsed one is positive about the box list.
Why are there two different weights listed for this?
The listing shows 330 pounds in one spot and 30 pounds in another. The 30 lb row is plausible for a 20-inch hub motor kit, and the 330 row reads like a maximum-load figure rendered into the wrong field, with no explanation anywhere on the page.