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In this Cyrusher XF800 review, I’ll be sharing my thoughts on one of the best selling electric fat bikes in recent years. I’ve been sent this latest 2022 model for a long-term test, and I’ll be putting it through its paces in the coming weeks. This post contains my initial thoughts, and a detailed breakdown of the components.
Unboxing, Assembly and First Impressions
Cyrusher contacted me to see if I’d be interested in testing their popular XF800 fat tyre electric bike, so I jumped at the chance! Cyrusher are a global brand and have fulfillment warehouses on all the continents – this review bike was sent from within the UK.
I received my XF800 within 24 hours of the order being placed. This is impressive, as the delivery time stated on their website is 3-5 working days. I’m not sure if my delivery was an exception or they usually deliver this fast. I would imagine it depends on the courier (mine was delivered by DPD).
Package weight (handling)
The Cyrusher XF800 weighs in at around 32kg but with packaging and accessories, the box weighs close to 40kg. Mine was a 2-person delivery and they kindly took the box into my house. If you live in a flat or up stairs, I would advise letting them know when you place the order. I had to take my box down stairs to access my back yard and it was a fair struggle!
I’m very impressed with the level of packaging on the XF800, they haven’t left anything to chance and the bike was incredibly well protected all over.
What’s in the box?
Apart from the e-bike, other items include the charger (supplied with UK or EU plug), some very concise instructions, stickers, floor pump and some very nice tools – very impressive!
The whole assembly process took me nearly 40 minutes from start to finish – this time includes unpacking and removing at the packaging material from the bike.
Paintwork and general finish
Once all the packaging was removed, I had a look over the Cyrusher to check for any marks or defects on the paintwork. I’m pleased to say, the finish was flawless with no marks or blemishes. This extends to all the finishing kit – I couldn’t find any marks or scratches anywhere. Full marks here!
Cyrusher XF800 Specs
- Motor: Bafang 48v 750w continuous, 1500w peak power
- Battery: 48v 13Ah (624Wh) LG or Samsung cells
- Battery Range: 30-50 miles depending on assist level used
- Charge time: 4-6 hours
- Top Speed: 28 mph on the flat (up to 32 mph with pedalling)
- Weight: 32kg
- Maximum load 150kg
- Gearing: Shimano Tourney 7-speed with TX50 thumb shifter
- Brakes: Union-Star hydraulic with cut-off sensors
- Suspension: Front and rear coil sprung
- Accessories: Kick stand, pannier rack, headlights
- Bafang hub motor: The Cyrusher XF800 uses the dependable 48v 750w Bafang rear hub motor. This motor uses a planetary gear system, which improves torque and efficiency. Plus, this motor will handle up to 1500w of peak power.
- Battery 48v 13Ah: Power is provided by a 624Wh (watt hour) Hailong case battery. Cyrusher use branded cells in their batteries (LG, Samsung or Panasonic) although there’s no indication of the exact cells used in this battery. Range is claimed to be around 50 miles (maximum) – this should be achievable with frugal use of the pedal assist. **The battery should be fully charged before use.
- Controller: Going by the displayed power output, I reckon it’s a 48v 25A controller. I will remove the controller box cover in the near future to confirm this (and manufacturer). It’s likely to be a KT controller (to match the display) which is one of the better brands.
- Display: My old favorite the KT3-LCD display is used. I installed loads of these back when I used to convert bikes for a living. It’s dependable, easy to configure. And, despite its age, still provides more info than some modern e-bike displays.
- Pedal sensor: The PAS sensor is neatly tucked away on the drive side (behind the chainring), and works very well. Pedal assist is instantaneous and comes on very smooth and progressive – no sudden jolt or on/off feeling. These PAS sensors are definitely better than a few years ago!
- Throttle: I would say the throttle is less responsive – this is more than likely a safety feature, but some riders may find the lag slightly annoying. Personally, it didn’t bother me as I prefer to use pedal assist, but it’s worth mentioning.
- Brake sensors: With such a powerful e-bike, brake cut-off sensors are an important safety feature. These are integrated into the hydraulic brake levers and work as expected.
Full marks to Cyrusher for using quality electric components. Bafang are a well established brand in the e-bike motor world and their motors a generally very reliable. The fact that branded lithium cells are used in the battery is another big plus for me.
- Gearing: Shimano Tourney 7-speed gearing is reliable and easy to service / maintain. With a 14-28 freewheel and Prowheel single chainring, there’s a good spread of gears. Shifting is provided by a Shimano TX50 thumb shifter.
- Brakes: Star-Union are not a brand I’m familiar with, but they work very well. These hydraulic brakes also have built-in motor cut-off sensors which is an important safety feature on an e-bike this powerful. It’s nice to see good sized brake rotors as well – 180mm front and 203mm rear.
- Wheels and tyres: Both wheels look well-built. The front wheel has a quick-release mechanism and the motor is in the rear hub. The tyres used vary, but my bike had expensive Panaracer Fat B Nimble 26 x 4″ fitted.
- Suspension: There’s front and rear suspension. The Cyrusher branded front forks look decent enough, with a nice anodised gold finish on the stanchions. These forks can be locked out if required and there is adjustment dial – I turned this clockwise as far as I could and didn’t really notice any difference. The rear shock seems quite firm – I’m 102kg and it worked just fine.
- Saddle: The Cyrusher branded saddle has plenty of padding and a pressure relief channel. It’s a nice looking saddle and is comfortable.
- Finishing kit: All the finishing kit (seat post, stem and handlebars) are alloy and look / feel good quality.
- Accessories: There’s a few useful accessories on the Cyrusher – Kickstand, front headlight. Plus, a rack and mudguards are also included. I chose not to fit the mudguards as they looked like they would flap about.
The Cyrusher XF800 is well equipped for the price. The Shimano gearing is very common on e-bikes at this price. I’m not a big fan of the TX50 thumb shifter and it would’ve been nice to have a trigger shifter instead. I haven’t heard of the brake brand (Star-Union) before, but they do work well.
I was pleasantly surprised to see the Panaracer tyres – a very well-known Japanese brand and high quality. Although the tyres fitted to your bike maybe different (CST or similar).
I’m always a bit skeptical about full suspension on a fat tyre e-bike. Personally, I don’t think it’s necessary as the tyres provide plenty of cushioning. Having said that, the suspension does work well and gives the bike a ‘magic carpet’ feel.
Cyrusher XF800 – First Test Ride
My usual test route is around 6 miles and involves a couple of very steep climbs (20%) and a longer less steep climb (6% over 2 miles). Below, I’ve broken down my opinion on the performance into different categories.
Pedal assist performance
I started off in assist level 3 – the motor kicked in very quickly, but not with a jolt, more of a smooth progressive build of power – full marks here! For a cadence pedal assist it works very well, although still nowhere near as good as torque-sensing assist (in my opinion).
Level 1 offered a little assist which would be fine for riding on the flat and conserving battery power, but useless for hills. The Cyrusher felt noticably harder to pedal in level 1 than my unassisted gravel bike (which only weighs 10.5kg). Level 2 was a little better, but it wasn’t until level 3 that things really started to happen.
I would say the reason for this is that the XF800 is a heavy bike (32kg). Plus, you have the extra rolling resistance of the tyres – a massive 55 watts according to the Bicycle Rolling Resistance website. I reckon level 2 cancels this out and in level 3 you really feel the assist helping.
Moving on to level 4 and I didn’t feel much difference from 3, but in level 5 it really starts to feel quick and the power builds rapidly. With some spirited pedalling I was able to get just over 30mph on the flat in level 5, although I reckon my pedalling cadence was well over 100rpm by this time!
My only criticism here is the twist throttle lagged a bit – this may well be a safety feature, as I’ve used e-bike throttles before which are like an on/off switch and can be quite disconcerting. Personally, I don’t think throttles are necessary on e-bikes, but some riders may benefit from using a throttle, particularly if they have a health condition.
After the initial lag in throttle response, the power came in very smoothly and the bike quickly gathered pace. Once up to speed on the flat, you could easily cruise at around 25mph, with a top speed approaching 30mph.
When using throttle only, the bike would slow down on smaller hills. On steeper hills (8% and above) you needed to pedal to keep the bike going – this is typical of a hub motor of this power output with a heavier rider.
Starting with a fully charged battery and a ride of 6 miles with roughly 1000ft (300m) of elevation gain, I used up one bar on the battery (out of five). This was mainly using assist level 3 to 5 with about a mile of using the throttle only. This would equate to about 30 miles. But, I live in a very hilly area.
Update 15/09/22 – I took the Cyrusher out for a longer ride today and the battery was down to 1 bar after 22 miles. The ride was very hilly and I didn’t go below level 3 assist, and used level 5 for about 20% of the ride. This seems about right for a 48v 13Ah battery with a heavy bike, heavy rider and hilly terrain.
The average rider shouldn’t need to use level 5 much, and in my opinion, leaving it on 3 is going to be more than enough for most riders. I reckon range of 30-35 miles is going to be realistic, with 40-45 miles possible with a light rider using low assist on flatter terrain. Read my article on ways to increase the battery range of your e-bike.
I was pleasantly surprised in the braking department. My route included a couple of very steep descents, and when you consider combined bike and rider weight of nearly 140kg, the brakes worked fine for me. I didn’t notice any brake fade on the descents, but I have always favoured the cadence braking method, where you come on and off the brakes (as opposed to just keeping the brakes applied).
Compared to what I’m used to (road and gravel bikes) the Cyrusher XF800 feels like a tank! This isn’t a criticism, it’s just massive compared to my regular road bike and weighs over three times as much. If you haven’t ridden a fat tyre bike before, it does take a bit of getting used to.
Once up to cruising speed, it actually handles very well and turns in to bends nicely. You only really notice the tyres on slower, tighter bends. But, if you’re expecting snappy, responsive handling, I would recommend a lighter e-bike with skinnier tyres.
The is the ace in the pack of the XF800! Magic carpet ride is the best analogy I can think of – it really does glide over the road surface, even on the less than perfect country lanes. With the saddle set level, and seat height adjusted correctly, it’s a very comfortable bike to ride. The suspension does a great job of muting the jarring effect of potholes.
At the current price of £1899, the Cyrusher XF800 is a hell of a lot of e-bike for the money. Out of all the Chinese electric bike brands, Cyrusher are one of the more established, and have been around for a few years. The XF800 is the best-selling e-bike in the Cyrusher range and is incredibly popular on both sides of the Atlantic.
What do I think of the Cyrusher XF800?
I personally think it’s a fun e-bike to ride. It’s very comfortable, provides loads of power (too much some may argue) and looks the business with those fat tyres.
Who is the Cyrusher XF800 best suited for?
If you’re looking for a great way to commute to work in comfort without worrying about rising fuel costs and traffic, then it would be a great option. Plus, with the power this bike offers, you can keep up with the roadies without breaking into a sweat!
Another great thing about the Cyrusher is versatility – with those fat tyres you’re not limited to just tarmac. You can ride on snow, sand or any rough terrain. Things like tree roots and rocks aren’t a problem. If you want a leisure bike for putting on the back of your camper van, the XF800 is a great way to get around and see the sights.
Would I actually buy one?
For me the answer would be no. And that’s got nothing to do with the bike, but more my own personal preferences. I like e-bikes to be more like road bikes – lightweight, nimble and easy to pedal with or without the assist. The Cyrusher XF800 is quite the opposite. It’s big, brash and heavy. But, like I’ve said above it is great fun to ride!
It’s early days yet and as we move into the Autumn, I plan on putting in a lot of miles and doing a YouTube video. I will also be doing a comparison article with the Engwe Engine Pro 750w folding fat tyre e-bike. If you want something a bit different and an e-bike that’s comfortable, powerful and can handle different surface, then Cyrusher XF800 is definitely worth considering. If you want something that can be folded for ease of transport, check out my article featuring 8 of the best folding electric fat bikes.
- Powerful Bafang hub motor
- Smooth and responsive pedal assist
- Hydraulic disc brakes
- Front and rear suspension
- Decent range from the 48v 13Ah battery
- Very, very heavy
- High rolling resistance from the fat tyres
- Not road legal in some countries