This detailed review was written by me, but since it was too long, it was shortened by an AI.

Unboxing & Assembly
The RX80 ships in a huge box and is about 95% pre-assembled. You still fit saddle, front wheel, mudguards, rack and handlebar; the quick-start sheet explains everything. Important: mount the headlight above the two fork bumpers with roughly 10 mm extra gap, or it will hit the mudguard when the fork bottoms out.

First Ride & Feel
As a total e- and fat-bike newcomer the first ride was a wow: four-inch knobbies float over roots, gravel and fields yet track straight on asphalt and even allow hands-free riding.

Motor & Range
The 48 V hub motor kicks in after roughly three-quarters of a crank turn, but the Shimano 7-speed makes first-gear starts easy. German rules forbid the throttle, so I removed it. First charge: 51 km across three days, last of five bars at 48 km. Full recharge: five hours. In steady 25 km/h mode today the battery still showed 4/5 bars after 27 km, so real-world range looks promising.

Brakes & Handling
Hydraulic discs needed 20 km to bed in; now they bite hard yet stay controllable, even at 45 km/h. In corners the bike feels planted; on sideways slopes the fat tires grip unevenly, so hold the bar firmly—normal for four-inch rubber.

Everyday Use & Off-Road
Off paved roads the RX80 is in its element, but it also hums happily on tarmac. Without assist the 33 kg mass is tough, with assist it disappears. Rack and fenders make shopping trips or tours easy; all tools are in the box.

Manufacturer & Support
Two paint scuffs on the rack showed bare metal. My mail host blocks China, so Burchda reached me via WhatsApp, explained, and sent a touch-up pen plus tracking. A fast, friendly fix; the rack itself is structurally fine.

Display & Motor Control
The YL81F display shows speed, PAS level, trip, total and a five-bar battery icon. Buttons switch PAS (0/1-3 or 0/1-5) and raise the limit from 25 to 45 km/h, swap km/miles, etc. It is bright in sun, back-lit in dusk, and the manual matches the menus one-to-one.

Room for Improvement
Other bikes using the same display unlock up to nine PAS levels and let you set motor power percent per level; on the RX80 these menus are hidden. Result: little boost in PAS 1-2, a sudden surge from 3 up. Opening these options via firmware would smooth the ride.

Overall
After 1.5 weeks the RX80 still makes me grin. Range, power, brakes and fun factor outweigh the quirks, and Burchda’s eager support inspires confidence. If you want an affordable yet solid fat-tyre e-bike for forest lanes, farm tracks and city commutes, give the RX80 a try.

Bella e-bike, arrivata nei tempi previsti e in perfette condizioni. Bicicletta molto robusta. Ho contattato per chiarimenti sul display ed ho avuto subito le informazioni chieste. L'ammortizzatore posteriore risulta un po' rigido.

perfekt

Ottima e-bike, robusta ed elegante. Arrivata in perfette condizioni ed nei temi previsti. Solo un po' rigido l'ammortizzatore posteriore.

Ich bin begeistert von dem Bike und dem Support. Zuerst einmal zum Artikel, das Rad ist ein Monster, quasi ein SUV unter den Fahrrädern. Es kam gut verpackt in 2 Paketen. Ein kleineres Paket mit dem Vorderrad und ein großes mit dem Rest. Enthalten war zusätzlich eine kleine Luftpumpe die wirklich nur für Notfälle da ist, da man ansonsten ewig pumpen muss, 2 Rückspiegel die am Lenker befestigt werden können, ein Handyhalter, ein Frontschutzblech und der Gepäckträger. Der Gepäckträger hat einige Probleme gemacht bei der Endmontage aber dank des Supports und seinen Ideen konnte ich ihn letztendlich montieren. Der Rest war problemlos. Es macht sehr viel Spaß mit dem Rad zu fahren und ich freue mich schon auf den Frühling hier. Eine Sache möchte ich aber noch anmerken, gerade für den deutschen Markt, hier ist es notwendig dass an jeder Felge 2 Reflektoren auf gegenüberliegenden Seiten montiert sind (Auf meinen Bildern bereits selbst ergänzt). Eventuell kann man da nachbessern.

Super rower

Erg mooie fiets, fiets erg goed.Ik heb een langere zadelpen gemonteerd in verband met mijn lengte 2 meter. Fiets past zo goed. Andere banden gemonteerd voor hoofd gebruik op verharde weg.

fiets zeer snel aangekomen 4 dagen in België. goed verpakt.monteren van fiets geen probleem. fiets getest.momenteel valt de actieradius tegen,53km met ondersteuning 5 gereden rond 25kmu.(5 graden buiten)battery word binnen bewaard.zeer goed kontakt met verkoper.afgesproken wacht op warmer weer om de actieradius nog eens te bekijken. verder mooie fiets rijd zalig.geen achterlicht maar dat werd vermeld bij de info. dus top fietsals de actieradius hoger word.

very good electric bike %100) 😁

I was a little scared of it, but it's a wonderful Bicycle and definitely worth its money. Definitely recommended. Did immediately enter code 25 Display what abnormal surveillance means according to manual. Just figuring out how to fix this. Has just been mounted.

the bike was delivered to me within 2 weeks, everything is fine without damage, it seems to be a quality product, the package also included a helmet, a pump, a lock and a phone holder as gifts 👍

Super! Heel jammer dat er geen achterlicht op zit. Maar ja. Kwaliteit is super. Stevige fiets met goede werking. Keurig verpakt. Zeer snelle levering (4 dagen Nederland)

Easy assembly, good for a woman.
I also bought for man Burchda R5 pro (very well) but unfortunately the connectors batteries 48v are different (U8: XLR 18mm and R5: Unknown 3 pins 8-9mm) how to find connectors to be able to use the same charger to Knife 2 bikes?

ben imballata, bicicletta molto bella, ha moltissime cose, la consiglio

Много съм доволен