YOSE POWER 36V 350W E-Bike Conversion Kit Review: What to Check Before You Convert

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A good conversion kit lets you turn a bike you already own into an e-bike for far less than buying a new one. The YOSE POWER 36V 350W 26″ Rear Motor Kit is the store’s featured all-in-one package: a geared rear hub motor already laced into a 26-inch wheel, a 36V 13Ah downtube battery, a charger, controller, display, pedal sensor, throttle and brake levers. It costs €419 with free shipping, and it was in stock when we checked.

For this YOSE POWER conversion kit review, we went through the full product listing, packing list and spec images, checked the compatibility notes that are easy to miss, and compared it with the other kits YOSE POWER sells. Here’s what you need to know before you order one.

Quick Specs

Price: €419, free shipping
Motor: 36V 350W brushless geared rear hub, 47Nm max torque
Wheel: 26″ double-wall rim with 12G spokes
Drivetrain fit: 6/7/8/9-speed freewheel (thread-on), not cassette
Dropout width: 138mm between the rear dropouts
Brakes: Works with V-brakes and disc brakes; mechanical brake levers included
Battery: 36V 13Ah downtube battery (481Wh on the spec image) with 42V 2A charger
Range: About 40–50km, according to YOSE POWER
Top speed: 30–32km/h (can be limited lower in the display)
Controls: LCD display with 5 assist levels, 12-signal PAS sensor, thumb throttle
Shipping weight: About 11.65kg for the full kit

What’s in the Box

The kit covers everything you need for a basic conversion: the motor wheel, downtube battery with charger, integrated controller with a controller bag, LCD display, PAS (pedal assist) sensor, thumb throttle, a 4-into-1 cable, two brake levers with motor cut-off, and basic tools. You’ll need your own freewheel (or move the one from your current wheel), tyre, tube and rim tape.

YOSE POWER Conversion Kit Review: Key Features

Geared rear hub motor

A geared hub is lighter and has more low-end pull than a direct-drive hub of similar power, and it freewheels with little drag when the motor is off. With 47Nm of torque, this motor is aimed at commuting and moderate hills rather than steep off-road climbs. A rear motor also keeps traction better than a front motor on loose surfaces and leaves your front fork untouched.

Downtube battery

The 36V 13Ah battery mounts on the downtube where a bottle cage would go, which keeps the weight low and central. YOSE POWER’s spec image lists it at 481Wh, about 3.2kg with the holder, 1,000+ charge cycles and around 7 hours to charge with the included 2A charger. The quoted 40–50km range is realistic for mixed assist on flat to rolling roads; heavy throttle use and hills will cut that.

Pedal assist plus throttle

You get both a 12-signal PAS sensor, which responds quickly when you start pedaling, and a thumb throttle. The display offers 5 assist levels and lets you set the speed limit lower, though YOSE POWER notes the limit can’t be removed entirely.

One thing to note: the written listing names a 36V 18A Lishui controller and a Dashi C500 display, while the product images show a JYT-branded sine wave controller and a 3.5-inch LCD. Both setups do the same job, but if a specific brand matters to you, confirm with YOSE POWER before ordering.

Compatibility Checks You Shouldn’t Skip

Freewheel, not cassette: this version only fits thread-on 6–9-speed freewheels. If your bike has a cassette, choose YOSE POWER’s cassette version instead (€429).
Rear dropout width: the motor needs 138mm between the dropouts. Most older 26″ mountain bikes are 135mm, which usually spreads slightly on steel frames but needs care on aluminum ones. Measure first.
Bottom bracket: the PAS sensor doesn’t fit Hollowtech II or Octalink bottom brackets. YOSE POWER sells a separate sensor for those.
Hydraulic brakes: the included levers are for mechanical brakes. With hydraulic brakes, you’ll need YOSE POWER’s separate brake sensors.
Wheel size: this kit is for 26″ bikes. 27.5″ and 28″/700c versions are available.

Check the Rules Where You Ride

This is important if you’re in the EU or UK. Standard pedelecs that can be ridden like a normal bicycle are generally limited to 250W rated power and 25km/h of motor assistance, and throttles are restricted. A 350W kit with a 30–32km/h top speed and a throttle can fall outside those limits, which may mean registration, insurance or restrictions on where you can ride. If you want to stay within pedelec rules, set the speed limit in the display and look at YOSE POWER’s 250W kits, or check your local regulations before buying.

How It Compares With Other YOSE POWER Kits

Kit	Price	Motor	Battery	Notes
26″ rear, freewheel (this one)	€419	36V 350W rear	13Ah downtube	Cheapest complete kit, freewheel bikes
26″ rear, cassette	€429	36V 350W rear	13Ah downtube	Same kit for cassette drivetrains
26″ rear, cassette, 18Ah	€459	36V 350W rear	18Ah	More range for longer commutes
26″ rear, cassette, 250W	€429	36V 250W rear	13Ah downtube	Closer to EU pedelec power limits
27.5″ or 28″ rear, freewheel	€429	36V 350W rear	13Ah downtube	For larger wheel sizes

Across every YOSE POWER conversion kit we looked at for this review, the freewheel 26″ kit is the entry point. If you ride long distances, the 18Ah battery version adds range for €40 more. If legal compliance matters, the 250W version is the more sensible choice.

Who It’s For

Owners of older 26″ mountain or trekking bikes with freewheel gearing.
Commuters who want assistance for 40–50km round trips without buying a new e-bike.
Home mechanics comfortable swapping a rear wheel, routing cables and mounting a battery.
Budget-focused riders who want a complete kit, battery included, for around €400.

Who It’s Not For

Bikes with cassettes, hydraulic brakes or Hollowtech II, unless you buy the right version or extra parts.
Riders who need strict pedelec compliance without adjusting settings.
Anyone not comfortable with DIY: you’ll need to fit the wheel, sensor and wiring yourself or pay a bike shop.
Steep off-road riding: 47Nm is fine for commuting but modest for hard climbs.

Pricing, Shipping, Returns and Warranty

The kit costs €419 on the YOSE POWER store with free shipping. YOSE POWER says delivery takes 2–4 working days in Germany and 4–8 working days to other countries, with orders shipped within 48 hours on weekdays and insured against loss, damage and delays. The store offers a 30-day return policy.

The motor and battery carry an 18-month warranty, and the other parts in the kit are covered for 12 months. Because this kit includes a lithium battery, remember that old batteries must go to proper recycling, not household waste.

Pros and Cons

Pros

Complete kit with battery and charger for €419
Pre-built 26″ wheel with geared hub motor
Downtube battery keeps the weight low
Both PAS and throttle, 5 assist levels
Free, insured shipping with 2–8 working day delivery in Europe
18-month warranty on motor and battery

Cons

Freewheel only; cassette bikes need a different version
Needs 138mm dropout spacing
No support for hydraulic brakes or Hollowtech II without extra parts
350W and 30–32km/h may exceed EU pedelec limits
Minor spec inconsistencies between the text and product images

FAQ

Does the YOSE POWER kit include a battery?

Yes. This version includes a 36V 13Ah downtube battery and a 42V 2A charger.

Will it fit my bike?

It fits 26″ bikes with a 6–9-speed freewheel, 138mm between the rear dropouts, and V-brakes or mechanical disc brakes. Check your bottom bracket type too.

How fast does it go?

The motor tops out at about 30–32km/h. You can set a lower limit in the display.

What range can I expect?

YOSE POWER quotes about 40–50km. Actual range depends on assist level, throttle use, rider weight and terrain.

Is it street legal in the EU?

That depends on your settings and country. Standard pedelecs are usually limited to 250W and 25km/h, so check local rules or consider the 250W kit.

YOSE POWER Conversion Kit Review: Bottom Line

The YOSE POWER 36V 350W 26″ rear kit is a straightforward way to electrify an older freewheel bike, with the battery, charger and all the controls included for €419. The geared motor and downtube battery are sensible choices for commuting, and fast, insured European shipping plus an 18-month warranty on the main parts make it easy to buy. The catch is fit and regulations: confirm your freewheel, dropout width, brakes and bottom bracket, and think about whether the 250W version suits your local rules better.

That wraps up our YOSE POWER conversion kit review. See all wheel sizes, battery options and current stock on the official YOSE POWER store.

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