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🚴♂️ Elevate your home cardio game—ride smarter, train harder, and never miss a beat!
The Sunny Health & Fitness SF-B1709 Indoor Cycling Bike combines a 13-level magnetic resistance system with a quiet belt drive for smooth, stable rides. Its multifunctional digital monitor tracks key workout stats including cadence and pulse via ergonomic sensors. Designed for durability and comfort, it supports up to 300 lbs and features adjustable seat and handlebars plus a convenient bottle holder. Ideal for professional-level cardio training at home with optional Bluetooth app connectivity.


















| ASIN | B07HL5RHXY |
| Best Sellers Rank | #245,394 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #213 in Exercise Bikes |
| Brand | Sunny Health & Fitness |
| Brand Name | Sunny Health & Fitness |
| Color | Magnetic |
| Customer Reviews | 4.2 out of 5 stars 930 Reviews |
| Drive System | Belt |
| Global Trade Identification Number | 00815749011862 |
| Handle Material | Alloy Steel |
| Included Components | Exercise Bike, User Manual, Hardware, Tool, (2) AAA Batteries |
| Item Dimensions D x W x H | 23.6"D x 53.2"W x 54.3"H |
| Item Type Name | Stationary Cycle Bikes |
| Item Weight | 89.3 pounds |
| Manufacturer | Sunny Health & Fitness |
| Material | Alloy Steel |
| Maximum Weight Recommendation | 300 pounds |
| Model Name | SF-B1709 |
| Model Number | SF-B1709 |
| Number of Resistance Levels | 13 |
| Part Number | SF-B1709 |
| Power Source | Battery Powered |
| Recommended Uses For Product | Indoor |
| Resistance Mechanism | Magnetic |
| Special Feature | Adjustable Seat |
| Special Features | Adjustable Seat |
| UPC | 815749011862 |
| Warranty Description | 3yr / 180 day Manufacturer Warranty |
R**E
Smooth, quiet and sturdy.
Yes, I mulled over several spin bikes, so I'm aware of how important these reviews can be in the decision process. Looked for new and on Craigslist, refurbished, etc. Almost got either the Peloton, Echelon, Bowflex C6 a refurbished Keiser and the Schwinn ic4. But, during my constant obsessed reviewing process, and having taken several spin classes, I narrowed my desires to 5 things: Sturdiness. Noise level. Price. Price. Speed of delivery. Sturdiness was based on the weight the machine could hold. I'm 5'10, 200lbs, but I know I can be gentle and then gorilla-is so the bike had to be strong. Noise Level. Although I have it on my patio, and where I live is a bit noise isolated already, I dont like to hear any fitness machine Im working on. Price. I wanted to feel like what I was paying for was a bargain and comparable to many higher end bikes. Price. I didn't want to spend money on something I'd also use in a gym and Amazon had a special monthly payment thingy that made it a cool way to pay for the bike. Speed of delivery: Although when I initially ordered it, it was supposed to get to me in five days which changed to two weeks due to Covid-19 issues, it was still faster than any other of those bikes outside of the refurbished ones off Craigslist. And I was really impatient. Had Bowflex or Schwinn said I can have it in less than a week, I'd prob went with one of them. Conclusion: This bike is really cool. It's only been a month so keep that in mind when reading this. But it is sturdy, really really quiet, and you can sway left to right without worry. I not sure if I'd get this if I were taller than 6'2" with long legs because I think it may be a leg issue problem. Not sure. The bike was really easy and simple to assemble (less than 45 mins) and it took longer taking it out of the packaging than assembling. I place my iPad on the bars (bars have a nice, soft yet sturdy feel) as you can see and the case has a strap that holds it around the bar. I tried a clamp/ipad holder but didnt like placement. Prob easier to just watch tv or something. There is good resistance although changing levels is ehhh especially when in climbing mode because it takes a bit dexterity to lean down and increase or decrease tension. The pedals are cool (only used cages so far) and will prob get shoes with clips soon. The ones I have need SPD to fit and I dont like em anyway so Im not gonna use em. The monitor is ok. I use the it for cadence and compared my Heart rate to my Apple Watch. The magnetic resistance is smooth and I dig it. The bike could use a brake though but since the pedals are so fluid, stopping is simple. The bike is actually nicer and more professional looking in person. I know its hard to tell buying online, and if you haven't rode the one youre reviewing, its hard to know. I had never heard of Sunny until I start looking for a bike and I was biased towards Schwinn, Spinning, and all the other name brands. I still am, but after purchasing this, I'm glad I was open to it. I started using the Peloton app, but now use other spin cycle youtube videos. Since I am a trainer, I kinda can create my own workout, and some of the coaches on those workout apps talk way too much (for my taste) but I'm sure many will find that helpful and motivational. All in all, I say do it and if you are gonna get a bike for use 2-4 times per week, invest in one that can accommodate at least 50lbs above your weight, is quiet, and you'll get your money's worth (2x/week x $20 spin class)=$1920yr. Imagine that.
E**O
BUY THIS BIKE!!! IT'S PERFECT. GREAT IF YOU'RE TALL. THE BEST RESISTANCE MECHANISM.
I love this stationary bike. I would absolutely recommend that this is the one that you purchase. Even if you're looking for an entry-level price-tag, spend a bit more and get this bike. You won't be sorry. Let me tell you why. 1) It rides incredibly smoothly, silently and is very comfortable. It accommodates tall, big people. I am 5'9" tall and weigh 200 lbs. My daughter is 5" 11" tall with ridiculously long arms and legs and weighs 120 lbs. My husband is 6'3" tall and weighs about 220, with enormous size 13 feet. All of us fit this bike properly. There are lots of ways to adjust it to your comfort level and for what you will be doing. I love to do The Trip by Les Mills. This has a lot of standing and I want my handlebars to be in a very specific position. Absolutely no problem. My daughter likes to work on her singing as she rides the bike by singing along to videos. Her adjustment needs to be different from mine. No problem. My husband just likes to get on the bike while watching TV and get some exercise. Absolutely no problem. This bike adjusts just as well as, if not better, than the bike I used at the gym, which I really liked. I'm sure that, even if you are short, the adjustment will be no problem. 2) THIS IS THE RESISTANCE MECHANISM YOU WANT!!! Why on earth would anyone use one of those stupid turning knobs for the resistance, when you can just use this perfect lever??? I honestly just don't get it. The bikes that they had at the gym that I used to go to had levers and I wanted a lever as well. However, I initially cheaped out and got a horrible bike that had the knob that you turn. It was awful. All the turning and twisting when you want to go from a light resistance to a heavy resistance. Ridiculous. On this bike you just push down the lever to the resistance level that you want. It's instant. It's smooth and it gives you great incremented resistance. When you do The Trip, they want you to go from heavy climbs, right into fast downhills. I would miss part of the workout while spending all that time, energy and attention twisting the stupid knob. Forget that! I just push the lever up or down. It's fantastic! 3) This bike is STURDY (and easy to assemble). This bike weighs right around 100 lbs. About 25 pounds more than the crappy bike I first purchased. This thing feels good and sturdy. Hubby and I aren't light-weights, but the bike feels perfectly capable of handling whatever we dish out to it. Also, it was very easy to assemble. You're given all of the tools you need and the instructions are pretty clear. Also, it's not all that complicated. I could have figured it out without any instructions at all. I wasn't rushing when I put it together, just taking my time, and I put it together, by myself, in about 45 minutes. Most of that time was spent unboxing the thing, which is REALLY well packed. The health monitor on this bike is functional, if rudimentary. I might look into a better monitor. Or maybe not. I really am just interested in the calories burned and the results that it has given me have seemed to be accurate. Someone mentioned that they didn't like where the water bottle bracket sits between the handlebars. I found it to be very convenient, and, again, sturdy. I'm watching the TV which is mounted on the wall in front of the bike, so I don't need an iPad mount or anything of that sort. I did not use the seat that came with the bike, as we had purchased a much better seat for the other crappy bike, to replace it's horribly painful seat (I purchased the TONBUX oversized seat, which is great). I will say, though, that the seat provided with the bike looked very good and comfortable, and probably would have worked without being painful. I just have an extra seat when needed. I have only had this bike for 3 days, so I can not attest to how well it holds up over time. The other crappy bike broke within 45 days (the stupid turning knob froze up), ONE DAY BEFORE I COULD NO LONGER RETURN IT. This one feels very well made, however, and I will update this review after we've had it for a while. I did purchase the extended warranty, however, just because the warranty isn't that great and boxing this thing up would be a nightmare to box up and return. Overall, I would challenge you to find a better bike for any price. This is the one you want to buy. BTW, the crappy bike that I purchased first and returned was the "pooboo Magnetic Exercise Bikes Stationary Bike Belt Drive Indoor Cycling Bike Fitness Bike for Home Cardio Workout Bike Training with LCD Monitor". DON'T BUY THAT ONE.
D**S
Excellent bike, not without issues.
For several months I've been scouring Craiglist looking for a used Schwinn IC4 indoor exercise bike, but they tend to get snapped up as soon as they are listed. I wanted a bike whose LCD computer tracked cadence. I also wanted a bike featuring magnetic resistance with levels of resistance that could be easily set and tracked. I didn't want to count twists on a resistance knob. So when I saw reviews for the Sunny SF-B1709 that described the clicky resistance lever, it seemed like precisely what I was looking for. So I put in an order. Assembling the bike wasn't too much of an issue for me. If you can assemble Ikea furniture you can probably assemble this bike. Once assembled I was impressed with the quality. This thing is solid and well built. The resistance lever works as described. Honestly, it's great. While I would like to see actual resistance numbers or a scale displayed somewhere, it's not really all that necessary. Moreover, the resistance itself is plenty for a good workout. There's nothing more disappointing than a machine that doesn't provide enough resistance even on the highest setting, but that's not an issue here. You'll get a good workout even 2/3 of the way up. This machine is about one third the price of an IC4, and for that kind of money it's a screaming deal. However, it is not without its issues. The heart rate monitor, for instance, seems a little inaccurate to me, at least based on what the bikes at the gym tend to tell me. I think this one reads low. The second issue is a bit more annoying. When I got the bike set up, I noticed that it made an annoying squeak while pedaling. After contacting customer support they instructed me to partly disassemble the unit and examine the interior to pinpoint the source of the squeak. This involved removing a shell, which comes already assembled from the factory. More significantly, it involves removing the crank arms which are an absolute bear to get off. Even after unscrewing the holding screw, I had to spray them with lubricant and smack them with a rubber mallet to get them loose. Once that was done I managed to get the shell apart and lubricate the bearings, which solved the problem. the bike is now whisper quiet. It would be nice if Sunny had built in an access port to make it simple to lubricate the various moving parts behind the shell. I don't look forward to removing these crank arms again if the bearings start squeaking again. It would also be nice if these bits were lubricated before shipping. In reading other reviews it looks like I'm not the only one to experience this issue. All in all, however, this thing is solid and a great deal. I'm a bit disappointed that it was squeaking when I first set it up, but I don't regret my purchase. I saved a ton of money versus comparable exercise bikes.
M**N
Half the price, but not half the quality as the M3
I bought this bike about 2 weeks ago and have already rode it 115 miles. This bike is wonderful! I did research and looked countless hours for a spin bike that could match, or come close to the Keiser M3 for much less, and this bike delivered! It’s easy to put together, exceptionally sturdy, smooth, and quiet. The 4 ways of adjustment to the bike’s seat and handlebars allows for nice comfort and fit as well! The lever may consist of only 13 levels of resistance, but the intensity of each is just right and can nearly go toe-to-toe with other competitors like the M3. If you’re looking for a similar ride that you most likely found in a spin class then this is the bike for you! It can’t be beat, and for nearly half the price of other models and is an exceptional bang for your buck! In short, I’ve listed some pros and cons below. Pros: -Affordability -Magnetic resistance; Don’t have to replace felt pad -Rubber belt drive; No obnoxious chain noise -Rear 8lb flywheel; I’m biased, but really enjoy the feel over heavier front driven flywheels. -Can use cycling shoes -Display; can monitor cadence, speed, distance, calories, time, and a few other stats Cons -loose pedal; tighten them up good before you workout or they’ll making clunking sounds. (My initial error lol) -Front handle bar design; love the handle bars on the bike, but if you’re getting into a serious workout with ups and downs the tube the handles sit on will cause the them to move slightly (Can be tightened though to reduce it) - Seat drop; I like when seats come down further so I can get into some serious hovers. The bike drops enough, but I’d like to see a little more drop personally. - Heart Rate monitor; Not accurate, but didn’t buy it for that. Would be a super nice feature though to have a more accurate reading in between sprints and hill climbs....but you can buy an accurate heart monitor anywhere so not really an issue. All in all this is a solid bike and cons are barely cons. I highly recommend this bike! If you don’t want to spend 1000+ this is the bike for you! It’s mid-ranged in price and can do just about as good as other top of the line models and brands. As a spin instructor, avid triathlon enthusiast, and a guy who loves to save money I enjoy it!
R**G
Wow, excellent value!
The bike was delivered by Amazon right into my garage. The assembly was simple and instructions easy to follow. It takes up to an hour to assemble and the package contains all the tools. Make sure you open it and lift the box out as the printing on the box instructs you to. I've had my first ride on it and I am impressed. It's completely silent! The bike pedals very smoothly through all the resistance levels. The lever that controls the resistance has notches so I can feel which level I'm using so I can switch between them by counting clicks. The bike is sturdy, stable, and balance under fast pedaling. The pedals are level and true. I use the universal side with the toe cage. It secures my shoe very well. I've had no issue with the handlebar being crooked as others have experienced. Everything assembled to good measurements. Tolerance and fit are good. Once I tighten all the adjustment knobs I experience no flop or wiggles in the seat or the handlebars. The computer works fine, but it is not a precision solid state piece of electronic. I had to wiggle the batteries a little to seat it properly and to get the computer to power on. Once all plugged in and seated, it works fine. This wasn't the cheapest bike nor the most expensive. It is however better than the Spinner I'm used to at fitness gyms. I also like the wheel in the back versus in the front for both aesthetics and feel. I'm now a big fan of belt drive magnetic brakes spin bikes.
E**.
Counterpoint: Buy with fear
I bought this bike because I could not go to the gym, like many of us in 2020. I was swayed by the reasonable price and the lightweight flywheel. The bike arrived relatively quickly and was easy to assemble. The manual was misprinted in a few places, but I was able to assemble it with the help of another person. The seat is tricky to get situated, but we managed after a few tries. I was thrilled to be able to exercise at home. There was a tiny hitch - a tiny bump when the wheel turned - but it did not get in the way of my ride, at first. Within a month, the bump was getting bigger and bigger. It was starting to affect the ride and I wanted to protect my investment, so I contacted support. First, support takes forever to get back to you. There was an extended back and forth as I verified my purchase. They also requested video of the issue. Then, they sent me a link to a Youtube video to take off the belt cover. Then, asked me to diagnose the problem and ask what part I would need shipped (yes, using the unreadable diagram from my misprinted manual). Here was the first problem: the video was a completely different model, and would not work for this one. In the video, the belt cover could be removed without removing the crank arm. Not so with this model (see picture). The plastic casing encases the crank arm, and it must be removed to get in. I asked them for further instructions for the crank arm. I did not want to void a warranty doing anything stupid. I did this twice. Radio silence. I finally googled and found another video of theirs for removal of the crank arm. It took two of us and half a canister of WD-40. We finally persevered but I still have not been able to diagnose the problem. I think the wheel may be installed improperly or bent, but I can't totally tell. Even if I could properly diagnose it, I don't have faith I would hear back from them or get the parts I need (OR be able to put everything back together again!). I feel completely let down by customer service. In the meantime, I have a completely unusable machine and no response from the company. I do not recommend this company. If you must go with Sunny, please choose a different bike! They have no way to actually help you take this one apart if it needs service. They will send you instructions for a different bike and then ignore you. I should have spent more money and gotten a Keiser.
F**K
Bad bearings from the start and lack of fine adjustments
First off, I own a Sunny spin bike with the wheel in the front and magnetic resistance with belt drive and have been overjoyed with the purchase so when I saw this one on sale, I jumped at the chance to have a spin bike at the 2nd house. As noted in the video, the bearings were noisy from the start. Sunny customer care was on target helping me to diagnose and once we narrowed down the issue to bad wheel bearings, they sent a video outlining the replacement and asked if I was comfortable with the repair. I was and after I received the replacement bearings, I replaced them without issue and solved the problem. Second, there is not enough room to install some pedals that install from behind. I removed the crank arms, installed the pedals and re-installed the crank arms. Problem solved! Third, there is no minor or micro adjustment to the seat height. The holes in the seat-tube are either too tall or too short. I am looking for a saddle that has a shorter height between the rails and top of saddle, that should help. Overall, after 6 hard workouts and bearing replacement, it's a good piece of equipment.
J**Y
A nice bike at twice the price
I picked this up during a price drop for a little over $250, a bargain as it was selling at other retailers for around $700 at the same time. I was a little skeptical about the quality of the brand as I am a former bicycle mechanic and tend to believe that you "get what you pay for" with bicycles, but after researching the brand it seemed like it would at least be acceptable quality for the price point. The bike came very well packed, and despite a hole here and there in the box all parts were there and in excellent condition. The "base", the part with the flywheel/belt/resistance unit/crank/pedals/etc comes 99% assembled, you really only install the stabilizing "feet," so you don't need to be mechanically inclined or have any special knowledge of bike mechanics to assemble. Once the stabilizers are on, it's a matter of assembling the cockpit, the seat/seatpost, pedals, handlebars, computer, which is pretty straight forward with surprisingly good directions. Taking my time it took me about an hour from getting the parts out of the box until I had an operable bike. I used my own tools, but it appeared all necessary tools are included as well. I was actually surprised to not have any issues with poorly fitting parts, mis-drilled holes, etc. Everything went together as it should. Once setup, adjustments were easy. I measured off one of my regular bikes and set the spin bike up as close as possible. The handlebars are great as they pretty closely mimic the handlebars on a typical road bike and allow for a variety of hand positions. They have adequate grip as well, even if you're sweating. The magnetic resistance and belt drive are fantastic. Whisper quiet, super smooth and the on-the-fly resistance adjustment makes workouts much more realistic and enjoyable. I typically watch a POV cycling video on YouTube and use the terrain in the video to cue resistance changes, like you're on a road with varying elevation. There's about a dozen resistance settings and in a session I probably only use the first 6. The lighter flyhweel, in my opinion, gives a more realistic "road feel" as there isn't as much momentum carried. If you slow down or stop pedaling, the bike does too, forcing you to keep your cadence up and consistent. Quality of the unit seems to be on par with other brands I've sold. Finishes are nice, the unit has good weight to it, it's extremely stable, no squeaks/flexing, etc. Very solid, heavy construction similar to what you'd expect from a "gym quality" unit and other brands costing triple what I paid. One negative I will mention for tall riders: I am 5'11 (with long legs, ~34" inseam) and the seatpost is at its maximum extension for me to get my proper saddle height. Folks in the 6'2+ range may find they can't get enough seatpost extension to have proper leg extension, despite what many others say in their reviews. As a bike mechanic, I can attest to the fact most people do not know how to properly size a bike and generally ride with their saddle too low. The onboard computer is a little cheesy, too, but it tells you everything you need to know, and I just use my Garmin watch for health monitoring anyway. Really can't go wrong for the price, even now that I see it's back up to $400. The combination of magnetic resistance and belt drive at this price point is unbeatable.
G**K
Great bike for the price
The magnetic resistance on this unit is great, the assembly was very straightforward and the bike is pretty sturdy. There are 3 people in my family using this bike ranging from 5' 7" to 6' 0" and we all can easily adjust to a good riding position that is comfortable. Having rode a few "spin" style bikes this one may be slightly noisier than some models that would cost a good thousand more, but honestly it is a really quiet machine. This one feels just fine and will definitely challenge most people. Also the SPD and the cage are really cool to have combined on the pedal and very functional.
F**I
Super
I don't know why some users left a few bad reviews for this item is unbelievably good for the price range! I am happy I came across Sunny sb-1709 before committing to the Schwinn IC4-8. Everything is comparable and lays on the same grass, but having the heart rate monitor pads on my Sunny is priceless And the aggressive downside handle oh may guud top top top
M**N
Nice and smooth for bad knees
easy to put together, its vary smooth easy gear change light flywheel I will update this and do a full review in the future
J**E
Buen producto
Muy buen producto, y mejor compra
O**R
pruducto de primera
excelente producto satisfacción total es el producto esperado, de buena calidad
Trustpilot
2 months ago
2 weeks ago