Set the market first, not the motor
Electric mountain bikes rank well on most comparison lists, so the first cut is rarely torque. Start with where the bike is legal to ride. KALKHOFF sells into DE and its machines carry assist class EU 25. HK BEIRUI TRADE CO. ships into US with assist class us class 2. Those classes are not interchangeable, and a bike built for a single market can be a different legal object in the other, so read the class on the frame and in the manual before you read a single spec.
The bike type lists overlap in only one place. KALKHOFF builds city, hybrid and step through. HK BEIRUI TRADE CO. builds commuter, folding and fat tire. The electric mountain bike category is the only shared entry, which is why these two turn up next to each other on our Electric mountain bikes ranking, and why a commuter, folding or fat-tire model from the second maker is a different purchase decision rather than a cheaper mountain bike.
Price: one listed range, one quote to chase
HK BEIRUI TRADE CO. publishes purchase prices of $399 and $899.99 across its e-bike catalogue, and it offers finance. Comparable entries in the price data start at €175.38 to €7,774.27 and reach €599.99 to €14,644.39, so the published band is not an outlier but it is not the full market either.
KALKHOFF lists no purchase price, so the comparison has to be done on a written quote for the specific model, battery included. Ask whether the plan is a loan, a lease or a hire purchase, what the term runs for, what the total payable is and what happens to the bike if you stop paying. These are purchase prices for the bike itself rather than subscription payments, so set them beside a finance quote rather than adding them to a monthly figure. KALKHOFF also offers finance, so the honest comparison is quote against quote, not sticker against sticker.
Motor, throttle and drivetrain
KALKHOFF pairs a mid motor from bosch with belt drive, and names IMAGE 3 MOVE, Endeavour 5+ Move, Entice 7+ Advance ABS as reference machines. HK BEIRUI TRADE CO. uses a hub motor, includes a throttle, and lists F26, F30, GT30, GT16Plus as its reference models. A hub motor with a throttle feels and behaves differently from a mid-drive without one, and the throttle also changes the legal reading of the bike, so settle that before comparing power figures.
Chassis and braking data is where published specifications thin out. HK BEIRUI TRADE CO. lists hydraulic disc brakes, suspension, a removable battery and a folding frame. KALKHOFF's published specifications cover the motor and the belt drivetrain rather than brake type, so ask the dealer for the brake and suspension specification of the exact frame in front of you, and for written confirmation of the belt drive. Keep the full model name from IMAGE 3 MOVE, Endeavour 5+ Move, Entice 7+ Advance ABS and F26, F30, GT30, GT16Plus to hand when you order parts or book service.
Range, battery and load limits
Range figures deserve careful reading. HK BEIRUI TRADE CO. states a claimed range of 129 on one of its dirt-bike models, and the word claimed does real work: it is a published figure, not a measured ride. Use it as a ceiling and discount it for rider weight, gradient, tyre pressure, cargo and cold weather.
Battery and load numbers are stated on different vehicles inside the same catalogue. Battery capacity tops out at 1,800 and stated payload reaches 174.6. A load rating of 136 to 166 and speeds of 40 to 56 are listed against a kick scooter, not a mountain bike, so treat them as sizing guidance rather than as the limits of the trail models. Ask for the range, battery capacity and total weight of the specific mountain bike, and for the conditions the claim was measured in. Nominal power across the comparison set spans 250 to 2,000, which is a screening number covering many listings and says nothing about any single bike.
Support, warranty and reliability
Reliability is mostly a servicing question, and the two companies answer it very differently. KALKHOFF was founded in 1919, operates as Kalkhoff Werke GmbH in DE, and services bikes through a partner network. Support runs through email, phone and help centre, so a phone call and a help centre are both open to you.
HK BEIRUI TRADE CO. is registered as HK BEIRUI TRADE CO., LIMITED in HK, sells through direct channels where KALKHOFF lists both, and supports customers through email and help centre. Return windows are close: 14 days for KALKHOFF against 14 days for HK BEIRUI TRADE CO. KALKHOFF adds 10-year frame warranty coverage. A long warranty only helps if a local shop will honour it, so check that a dealer near you exists before the purchase rather than after the first fault.
Putting the comparison together
A workable order of checks: assist class and market, then published price or written finance quote, then motor placement and whether you want a throttle, then battery and load figures for the exact model, then warranty and local servicing. Work through the KALKHOFF review and the HK BEIRUI TRADE CO. review with that order in hand, and scan the Electric mountain bikes ranking to see how both sit against brands such as Ecotric, iSinwheel and ANCHEER.
Some questions stay open after any desk comparison: what the quoted mountain bike actually weighs with its battery, and how it behaves on loose ground with the motor and tyre combination you are buying. Both need a test ride, and the published numbers above will not answer either.