Description
What is included in the 1500W conversion kit
Complete 1500W conversion kit — 9 components, torque arms included. Fitting takes 2–3 hours.
Battery and charger are not included — you add them when ordering, from this kit's optional batteries: see the batteries. For fitting you only need ordinary tools (2.5 / 3 / 5 mm hex keys, an adjustable spanner and a screwdriver).
The 1500W kit is the step at which a conversion becomes a serious project: up to 50 N·m of torque delivered straight into the wheel hub, speeds of up to 60 km/h and a 35A controller that holds the load without giving up on long climbs. The brushless gearless direct-drive motor has no gears and no brushes, so there is practically nothing to wear out mechanically. This is the kit for heavy cargo, long climbs and high loads, with constant torque.
1500W technical specifications
Motor parameters
Electrical components
Fitting and compatibility
Torque and power at 1500W
The 1500W kit gives you 50 N·m of torque straight into the wheel hub, speeds of up to 60 km/h and a 35A controller that sustains the effort without losing power on long climbs.
It feels best when you carry heavy loads, pull away often under weight or climb long, steep gradients. If you do not need this much power, 500W and 1000W are the intermediate steps in the range.
Why the torque arm is mandatory at 1500W
At 1500W the motor's torque exceeds the capacity of any standard bicycle dropout, whatever the frame material – steel and aluminium alike. Unlike the smaller kits, where a torque arm is recommended or all but mandatory depending on the frame, at this power it becomes mandatory without exception, fitted on both sides of the axle.
Without one, the risk of a spun axle (the axle turning in the dropout) is no longer a matter of long-term wear but of weeks of intensive use – especially if the kit is used constantly at high load, the typical case for heavy cargo at this power. Both torque arms are included in the kit, not sold as a separate accessory, and they fit in 10–15 minutes per side.
35A controller with 18 MOSFETs
The 35A is the difference between a kit that delivers power in bursts and one that sustains it. The controller normally works with the motor's Hall sensors, and if a sensor fails it switches automatically to non-Hall mode so you are not left out on the trail. The brake levers cut power to the motor instantly at the first touch.
What the 1500W kit does best
Heavy cargo
Constant transport of heavy loads, where 50 N·m of torque and the 35A controller do not choke when pulling away.
Long, steep climbs
50 N·m of torque and a 35A controller for extended climbs and variable loads.
Power in reserve
Up to 60 km/h and a 35A controller with 18 MOSFETs, built for repeated starts under load.
Choosing the battery
The kit ships without a battery. When ordering you can add one of the batteries below, chosen for this kit, all with a key lock and charger included. You can see more in the e-bike batteries category.
Recommended batteries for this kit
48V 17.5Ah Downtube Battery
48V 22.5Ah Downtube Battery
52V 24Ah Downtube Battery
52V 20Ah Triangle Battery
48V 20Ah Triangle Battery
1500W or 2000W? When it is worth going up
1500W covers heavy cargo and extended climbs under load. If you want even more torque for extreme loads or repeated starts under weight, the 2000W kit is the next step — but it also calls for a battery to match, so work out the whole budget first.
Warranty and spare parts
The motor carries a 24-month warranty and the electronic components 12 months. Spare parts and accessories are available in the eBike parts section. Compare every power option in the conversion kits category, from 250W up to 3000W.
Frequently asked questions about the 1500W kit
Is the battery included in the kit?
Do you offer kit installation in Bucharest?
Are the torque arms included or sold separately?
How much torque does the 1500W kit give compared with the smaller ones?
Is it compatible with a fat bike frame?
Does it work just as well on a steep climb after an hour of use?
Can I use this kit for heavy cargo transport?
What top speed does the 1500W kit reach?
Details
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What customers are saying
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