{"id":26670,"date":"2026-10-07T07:48:32","date_gmt":"2026-10-07T05:48:32","guid":{"rendered":"https:\/\/www.power-e-bike.fr\/blog\/du-vae-250w-au-kit-moteur-arriere-puissant-en\/"},"modified":"2026-10-07T07:48:32","modified_gmt":"2026-10-07T05:48:32","slug":"from-the-250w-e-bike-to-the-powerful-rear-motor-kit","status":"publish","type":"post","link":"https:\/\/www.power-e-bike.fr\/blog\/en\/from-the-250w-e-bike-to-the-powerful-rear-motor-kit\/","title":{"rendered":"From the 250W e-bike to the powerful rear motor kit"},"content":{"rendered":"<p>Already owning a 250W e-bike with front motor and a 36v battery, a road accident sent that bike to the scrapyard.<br \/>\nRefunded by the insurance, I wanted to switch to a powerful rear motor kit because the 250W had trouble on significant climbs and did not exceed 30 km\/h.<br \/>\nI stumbled by chance upon the power ebike website.<br \/>\nThe hardware looked good quality and cheaper, but above all it allowed choosing your battery unlike competitors.<br \/>\nAnd by pure chance, power ebike was organising a group buy on the 205rh&#8230;<\/p>\n<p>That sale precipitated my purchase decision&#8230;.order placed, received a few days later but no bike to install it on&#8230;.<br \/>\nSo I toured the bike shops with a budget of \u20ac600-700 and safety requirements: hydraulic disc brakes mandatory and I wanted to get under 11kg weight&#8230;.plus I wanted it black and red&#8230;. As you can imagine all the shops I visited failed: either I could not find it, or it was the colour, or the brakes, or the price&#8230; In short I decided to build it myself&#8230;. Not being much of a handyman and having absolutely no knowledge of cycling (I only use the bike to go to work to save petrol), in fact I hate that sport&#8230;.but the savings made for my daily 20km decided me on this means of transport.<\/p>\n<p>So I figured it couldn&rsquo;t be that complicated to assemble a bike (in fact it is complicated)&#8230; I look on the internet, I find a bare frame to paint at \u20ac99&#8230;<br \/>\n&#8211; 6 cans of Ferrari-black car spray paint bought on sale at \u20ac10.90 a can<br \/>\n&#8211; 5 cans of gloss varnish at \u20ac10 a can<br \/>\n&#8211; 1 can of primer at \u20ac11<\/p>\n<p>I find on the net a bike sticker manufacturer and I decide to take the GT brand simply because I like the design&#8230;<\/p>\n<p>Stickers ordered for \u20ac15<br \/>\nOnce all that was received, painting the bike was very simple&#8230;.<\/p>\n<p>I started looking for parts: front and rear Shimano Altus derailleurs&#8230;at a good price on the net&#8230;.square classic Shimano crankset at \u20ac50&#8230;Suntour front fork at \u20ac90&#8230;and bottom bracket at \u20ac35&#8230;<br \/>\nI found a Chinese site where you find everything for bikes..<\/p>\n<p>Result: I fill up&#8230;. Carbon bar, red ergonomic grips, red mirror, comfort saddle, carbon seatpost, handlebar bag rack, lighting, pedals, cables, watch, ties, bottle holder, bell..<\/p>\n<p>But you have to be patient: one month of waiting to receive everything&#8230;<\/p>\n<p>But given the price, about \u20ac150 for everything &#8230;.I did not hesitate&#8230;.<\/p>\n<p>The problem: I could not find my hydraulic brakes, the discs and the magnesium front wheel&#8230; Products found on another Chinese site for \u20ac120&#8230;.the lot. Once everything was received,<\/p>\n<p>I was still missing the tyres ordered for \u20ac30 with anti-puncture inner tubes, the shifters found at \u20ac20 and the rear bag for \u20ac25&#8230;.but the most important thing was missing: the battery&#8230;.<\/p>\n<p>I wanted to buy it on the Chinese site but I was too afraid of losing my money if the battery never arrived&#8230; I asked advice from power ebike&#8230;who did not give me a site because of non-compete clauses but who steered my choice.<\/p>\n<p>I found a 48v 17.5ah battery for \u20ac749 on a French site and it took me about 15 hours to assemble the whole bike&#8230;.<\/p>\n<p>Then a quick trip to the shop to adjust the brakes and derailleurs&#8230; Final result for \u20ac1,875.00, a brand-new bike to my taste&#8230;.<br \/>\nAfter the first trials, top speed 42km\/h (a bit disappointed, I expected 48-50km\/h with the 280\/380 8&#215;8 motor),<br \/>\nAs power-e-bike says, the table is given for a 48v nominal battery which, at end of charge, would show 58v or even 60v, which apparently is not my case, since mine shows 54v.<br \/>\nThe bike weighs 35kg&#8230; in short I am happy to have pulled it off&#8230; (Project started end of February and finished on 8 May)<br \/>\nDo not hesitate: the investment is substantial but the pleasure is there&#8230;.<\/p>","protected":false},"excerpt":{"rendered":"<p>Already owning a 250W front-motor e-bike with a 36V battery, a road accident sent that bike to the scrapyard. Refunded by the insurance, I wanted to move to a powerful rear motor kit, because the 250W struggled on big climbs and did not exceed 30 km\/h.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[127],"tags":[],"class_list":["post-26670","post","type-post","status-publish","format-standard","hentry","category-user-experience"],"_links":{"self":[{"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/posts\/26670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/comments?post=26670"}],"version-history":[{"count":0,"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/posts\/26670\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/media?parent=26670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/categories?post=26670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.power-e-bike.fr\/blog\/wp-json\/wp\/v2\/tags?post=26670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}