---
product_id: 25227279
title: "Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509"
brand: "sunny health & fitness"
price: "€ 1189.47"
currency: EUR
in_stock: false
reviews_count: 7
url: https://www.desertcart.gr/products/25227279-sunny-health-fitness-40-lb-flywheel-belt-drive-indoor-cycle
store_origin: GR
region: Greece
---

# Quiet, low-maintenance belt drive 40 lb flywheel for smooth momentum Step-less micro-tension resistance Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509

**Brand:** sunny health & fitness
**Price:** € 1189.47
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♂️ Ride Smooth, Ride Strong — Your Ultimate Indoor Cycling Upgrade!

## Quick Answers

- **What is this?** Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509 by sunny health & fitness
- **How much does it cost?** € 1189.47 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/25227279-sunny-health-fitness-40-lb-flywheel-belt-drive-indoor-cycle)

## Best For

- sunny health & fitness enthusiasts

## Why This Product

- Trusted sunny health & fitness brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful 40 lb Flywheel:** Experience seamless momentum that keeps you in control, whether you're sprinting or cruising.
- • **Portable & Stable Design:** Move your bike easily with built-in wheels and ride confidently with foot levelers ensuring rock-solid balance.
- • **Whisper-Quiet Belt Drive:** Enjoy a smooth, low-maintenance ride that lets you focus without distracting noise.
- • **Ergonomic Full Adjustability:** Tailor seat height and position for a perfect fit that supports long, comfortable rides.
- • **Customizable Micro-Tension Resistance:** Dial up or down your workout intensity with effortless, precise resistance control.

## Overview

The Sunny Health Fitness SF-B1509 Indoor Cycle Bike features a robust 40-pound flywheel paired with a whisper-quiet belt drive system, delivering smooth, low-impact workouts. Its micro-tension resistance knob offers seamless intensity adjustments, while fully adjustable seating ensures ergonomic comfort for riders up to 300 lbs. Designed for durability and portability, this heavy-duty alloy steel bike combines professional-grade performance with user-friendly features, making it a top choice for home fitness enthusiasts seeking a premium cycling experience.

## Description

The Endurance Magnetic Indoor Exercise Cycle Bike model SF-B1877 is an excellent belt driven system model for low impact fitness. The performance monitor allows you to track your Speed, Distance, Time, Calories, Odometer, RPM, and Pulse. Excellent for beginners, fitness enthusiasts, or anyone needing recovery training to start an in-home calorie burning workout routine. Adjustable magnetic resistance allows you to change up your exercise cycling routine making every home workout session feel different. Designed to last, feel confident riding this durable stationary bike with a 265 lb maximum user weight. The Endurance Magnetic Exercise Bike model SF-B1877 will push your stamina, performance, and fitness to the next level!

Review: I really like this bike and so far seems durable, but get a proper saddle! - I ordered this on March 21, 2022 My PCP told me I needed to start exercising in a way that was better for my knees, so cycling it was. But I live out in the county and it is primarily gravel roads, so I ended up deciding to just get a stationary bike first. I'm a large man, 250lbs and 6ft6" tall so it was a lengthy search finding something in my budget that would work for me. My legs were still a little too long for this bike but it was close enough I could still use it without feeling overly cramped. Assembly was simple and it feels very robust, I was actually impressed by the weight and rigidity of the materials. I get zero flex or wobble after properly adjusting the feet heights on my tile floor. I had doubts about the durability of the belt drive system, but so far I haven't had any issues and it's definitely much more quiet than some older chain drive stationary bikes I remember riding in the past. There were a couple things that were a problem though. The bottle holder placement is very awkward while riding. You can't exactly coast on these like a regular bike so grabbing a water bottle while peddling is impossible for me, mostly due to my height. I really wish these had other optional mounting heights and locations. I'll likely drill higher holes and install some rivnuts to move it up. But for now I've just been stopping to take a drink. And the other issue was the seat. I absolutely HATED the seat on this thing. It did not fit my anatomy at all and was way too squishy in all the wrong places. I now have a properly sized Brooks bike saddle installed and it makes a HUGE difference. Soooooo much more comfortable! so much so that I can ride this thing for hours without my butt hurting. And The seat mounting bracket can be removed from the original seat and be transferred over to the new saddle. Was a very easy process. Also, based on the advice from a friend that is an experienced cyclist I determined where to better position the seat for my long legs and increase comfort even further. But to do this I had to modify the mounting bracket. Even after adjusting everything to the maximum position I still couldn't get a proper leg extension. But after the modification it is absolutely fantastic and due to the build quality I don't expect to need a replacement for many years. With the seat so far back I did occasionally rub the riser post with my thigh, but it's nothing painful, was just barely brushing up against it. But after getting some proper cycling bibs it never happens anymore due to the compression at the thing. So if you're slightly too tall for the bike, you can drill a hole in the seat post plate and flip the plate around and then bolt it on to get more length. BUT it's not easily adjustable now, so if you have multiple riders In the house I don't recommend this.
Review: WHOA, WHOA this bike is Super Excellent Quality for the Price -- OMG I love it. - Wow...this Cycling Bike is the bomb... I absolutely love it. My husband was going to buy another cycling bike that was going to cost him $3,000. I suggested he check desertcart and low and behold we found this bike. I was like -- I don't know -- is it good quality? Well let me tell you -- I'm glad we brought this Sunny bike. It tops the expensive ones. When it arrived, my husband opened the box and he hugged me and said THANKS HONEY -- you saved me a lot of money. I said to him you owe me...lol..lol. Okay.. the setup of the bike was simple you had to put on the seat, petals and front and back bottom bars, water bottle, few knobs -- at least that's what my husband said. He said it basically came already set up. The bike is very heavy... and I mean "heavy" -- I am a woman and I could not pick up this bike -- I tried and said forget it. Luckily it has wheels in the front for moving if need be. My husband just picks up the back part to move it. Its of very excellent, excellent quality. Not sure if this thing is all steel construction or what? Its darn heavy (which is a good thing). The bike is really sturdy --- does not move when you exercise. My husband put an exercise mat underneath -- just to protect the floor just in case it ever moves -- but I sincerely doubt it will ever move. Bars, seat, everything is sturdy when I ride. On the bars, it has a place where I can place my samsung pad for watching Youtube videos on cycling. If you have a smart tv you can also watch youtube videos on cycling. It's just perfect. Also, You have a place on the side to put your water bottle. Cons: Please, please if you do buy this bike you must buy a "seat cushion" first for extra comfort before you ride -- something plush or super soft. The seat is well made and it is hard -- guess its made to last. Can't say I didn't warn you. Now the bike does make a very slight, slight, slight noise but nothing to complain about. I really didn't notice it until I saw a review on desertcart before I brought the bike that said it made a tiny noise. So when I brought the bike I listened out for it -- It's really nothing at all - you have to listen hard to hear it. I almost did not buy this bike because someone complained about the noise. Glad I did not listen to that review -- I would have missed out on this bike. I am going to definitely recommend this bike to my friends. So all in all I rate this bike 10 GOLD STARS!!! Its the best quality Cycling bike I have ever seen. Hope this helps.

## Features

- 40 POUND FLYWHEEL: 40-pound flywheel keeps the momentum of your legs moving forward as you pedal. Whether you ride hard or ride slow, you will always be in control of your workout.
- SMOOTH BELT DRIVE: Stay in command of your workout with the exercise bike designed for maximum stability for a quiet and controlled workout. . The belt drive is low maintenance and is very smooth to encourage a longer workout.
- MICRO-TENSION RESISTANCE: To burn more calories and crank up the intensity of your workouts, easily increase the bike’s step-less resistance adjustment knob. Various levels of tension give your legs the power to pedal intensely or give them a break with an easier workout.
- COMPLETELY ADJUSTABLE: The stationary cycling bike will completely adjust to fit your body. Adjust the seat up or down and forward or backward to ensure your body fits the pedals for a comfortable ride.
- TRANSPORTABLE & ERGONOMIC: Bike trainer has been equipped with transportation wheels for easy portability. Foot Levelers ensure stability and balance for your bike while on the ground. 300 Weight Max.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0140JN7D8 |
| Best Sellers Rank | #223,772 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #229 in Exercise Bikes |
| Brand | Sunny Health & Fitness |
| Brand Name | Sunny Health & Fitness |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (3,797) |
| Date First Available | July 15, 2015 |
| Drive System | Belt |
| Global Trade Identification Number | 00815749010940 |
| Included Components | Exercise Bike, User Manual, Hardware, Tool |
| Item Dimensions LxWxH | 20 x 49 x 47 inches |
| Item Package Dimensions L x W x H | 42.3 x 35 x 11 inches |
| Item Weight | 48.99 Kilograms |
| Manufacturer | Sunny Distributor Inc. |
| Material | Alloy Steel |
| Maximum Weight Recommendation | 300 Pounds |
| Model Name | SF-B1509 |
| Model Year | 2015 |
| Number of Items | 1 |
| Package Weight | 54.43 Kilograms |
| Part Number | SF-B1509 |
| Power Source | Battery Powered |
| Product Dimensions | 20"D x 49"W x 47"H |
| Recommended Uses For Product | Indoor |
| Resistance Mechanism | Friction |
| Size | 47 L x 20 W x 47 5 H |
| Special Feature | Adjustable Seat, Heavy Duty |
| Sport Type | Exercise & Fitness |
| Style | Advanced - Leather |
| Suggested Users | Unisex Adult |
| UPC | 815749010940 |
| Warranty Description | 3yr / 180 day Manufacturer Warranty |

## Product Details

- **Brand:** Sunny Health & Fitness
- **Color:** White
- **Item Weight:** 48.99 Kilograms
- **Material:** Alloy Steel
- **Maximum Weight Recommendation:** 300 Pounds
- **Power Source:** Battery Powered
- **Product Dimensions:** 20"D x 49"W x 47"H
- **Recommended Uses For Product:** Indoor
- **Resistance Mechanism:** Friction
- **Special Feature:** Adjustable Seat, Heavy Duty

## Images

![Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509 - Image 1](https://m.media-amazon.com/images/I/51TLKlm2+pL.jpg)
![Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509 - Image 2](https://m.media-amazon.com/images/I/51UXPmotGmL.jpg)
![Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509 - Image 3](https://m.media-amazon.com/images/I/51wiY3Dr8CL.jpg)
![Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509 - Image 4](https://m.media-amazon.com/images/I/61C02w36eiL.jpg)
![Sunny Health Fitness 40 lb Flywheel Belt Drive Indoor Cycle Bike - SF-B1509 - Image 5](https://m.media-amazon.com/images/I/61XGRHsXLvL.jpg)

## Questions & Answers

**Q: Anyone have this trouble?...I can do one whole rev & feel no change in resist..other times a small change makes a big difference.**
A: Yes!  Not sure what to do.  The resistance never seems to be consistent.  I can't quite get to a sustainable resistance level, especially in the seat.  When I try to get to a 50% resistance sitting, it progressively gets lighter..... not loving the bike right now.

**Q: Does anyone know of good replacement pedals? i bought spd clips and it’s always hard to get my shoes out, and the right shoe never comes out!**
A: Just add a littler WD-40 to your clips on your shoes ONLY....should help with unclipping.

**Q: I want to confirm that the pedals on this bike are CPD compatible?**
A: Confirmed. Its a Caged style on one side of the pedal, and the other side has the SPD compatibility

**Q: The seat hurts so bad. i've tried adjusting it every which way. what can i do?**
A: I have been spinning for three years, the first year the seat hurt constantly - this is just your body getting used to spinning - not the bike. You can buy a pad to go over the seat but I found them to be little use. Once you get use to spinning it will stop hurting I promise.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I really like this bike and so far seems durable, but get a proper saddle!
*by A***N on July 24, 2022*

I ordered this on March 21, 2022 My PCP told me I needed to start exercising in a way that was better for my knees, so cycling it was. But I live out in the county and it is primarily gravel roads, so I ended up deciding to just get a stationary bike first. I'm a large man, 250lbs and 6ft6" tall so it was a lengthy search finding something in my budget that would work for me. My legs were still a little too long for this bike but it was close enough I could still use it without feeling overly cramped. Assembly was simple and it feels very robust, I was actually impressed by the weight and rigidity of the materials. I get zero flex or wobble after properly adjusting the feet heights on my tile floor. I had doubts about the durability of the belt drive system, but so far I haven't had any issues and it's definitely much more quiet than some older chain drive stationary bikes I remember riding in the past. There were a couple things that were a problem though. The bottle holder placement is very awkward while riding. You can't exactly coast on these like a regular bike so grabbing a water bottle while peddling is impossible for me, mostly due to my height. I really wish these had other optional mounting heights and locations. I'll likely drill higher holes and install some rivnuts to move it up. But for now I've just been stopping to take a drink. And the other issue was the seat. I absolutely HATED the seat on this thing. It did not fit my anatomy at all and was way too squishy in all the wrong places. I now have a properly sized Brooks bike saddle installed and it makes a HUGE difference. Soooooo much more comfortable! so much so that I can ride this thing for hours without my butt hurting. And The seat mounting bracket can be removed from the original seat and be transferred over to the new saddle. Was a very easy process. Also, based on the advice from a friend that is an experienced cyclist I determined where to better position the seat for my long legs and increase comfort even further. But to do this I had to modify the mounting bracket. Even after adjusting everything to the maximum position I still couldn't get a proper leg extension. But after the modification it is absolutely fantastic and due to the build quality I don't expect to need a replacement for many years. With the seat so far back I did occasionally rub the riser post with my thigh, but it's nothing painful, was just barely brushing up against it. But after getting some proper cycling bibs it never happens anymore due to the compression at the thing. So if you're slightly too tall for the bike, you can drill a hole in the seat post plate and flip the plate around and then bolt it on to get more length. BUT it's not easily adjustable now, so if you have multiple riders In the house I don't recommend this.

### ⭐⭐⭐⭐⭐ WHOA, WHOA this bike is Super Excellent Quality for the Price -- OMG I love it.
*by N***1 on December 6, 2016*

Wow...this Cycling Bike is the bomb... I absolutely love it. My husband was going to buy another cycling bike that was going to cost him $3,000. I suggested he check amazon and low and behold we found this bike. I was like -- I don't know -- is it good quality? Well let me tell you -- I'm glad we brought this Sunny bike. It tops the expensive ones. When it arrived, my husband opened the box and he hugged me and said THANKS HONEY -- you saved me a lot of money. I said to him you owe me...lol..lol. Okay.. the setup of the bike was simple you had to put on the seat, petals and front and back bottom bars, water bottle, few knobs -- at least that's what my husband said. He said it basically came already set up. The bike is very heavy... and I mean "heavy" -- I am a woman and I could not pick up this bike -- I tried and said forget it. Luckily it has wheels in the front for moving if need be. My husband just picks up the back part to move it. Its of very excellent, excellent quality. Not sure if this thing is all steel construction or what? Its darn heavy (which is a good thing). The bike is really sturdy --- does not move when you exercise. My husband put an exercise mat underneath -- just to protect the floor just in case it ever moves -- but I sincerely doubt it will ever move. Bars, seat, everything is sturdy when I ride. On the bars, it has a place where I can place my samsung pad for watching Youtube videos on cycling. If you have a smart tv you can also watch youtube videos on cycling. It's just perfect. Also, You have a place on the side to put your water bottle. Cons: Please, please if you do buy this bike you must buy a "seat cushion" first for extra comfort before you ride -- something plush or super soft. The seat is well made and it is hard -- guess its made to last. Can't say I didn't warn you. Now the bike does make a very slight, slight, slight noise but nothing to complain about. I really didn't notice it until I saw a review on amazon before I brought the bike that said it made a tiny noise. So when I brought the bike I listened out for it -- It's really nothing at all - you have to listen hard to hear it. I almost did not buy this bike because someone complained about the noise. Glad I did not listen to that review -- I would have missed out on this bike. I am going to definitely recommend this bike to my friends. So all in all I rate this bike 10 GOLD STARS!!! Its the best quality Cycling bike I have ever seen. Hope this helps.

### ⭐⭐⭐⭐⭐ Review
*by W***S on January 5, 2023*

I was looking for a straight forward exercise bike without the tech or monitor because I'm not interested in knowing my heart rate, distance, speed or timer, nor am i interested in online classes with someone reeling a list of motivational clichés to keep me going (you know the brand name). I purchased this on 22/12/2022 and paid £159.10 sold by Amazon EU S.a.r.L then a couple of days later notices the price hiked up to £329.99 glad I'm brought this when I did now, plus there isn't a warranty on this outside USA I'm in the UK. Setup was easy to do and the tools were included, but keep hold of the manual as it has instructions for maintenance required for daily-weekly and monthly including belt tightening should a problem arise. Also Sunny have some maintenance videos on YouTube to help you with removing the felt/leather pads for oiling but you can also use a clean wire brush to rough the leather up a bit for extra friction. So having used this for 1 week now I cannot fault this exercise bike it has been silent to use. I set a 45 minute timer on my echo dot and the bike is Infront of the bedroom TV and I watch indoor cycling on YouTube so its like having a cycle simulator and its easier and safer as its winter months with cold dark mornings to roll out of bed and use this set up (cycling around the alps LOL) than dragging myself outside in the wintry conditions. Overall I'm pleased.

## Frequently Bought Together

- Sunny Health & Fitness Premium Indoor Cycling Exercise Bike
- Domain Cycling Gel Bike Seat Cushion- Secure Peloton Fit for Smooth Stable Rides- Non-Slip Bicycle Seat Cushion for Exercise Bikes, Padded Bike Cushion Seat Cover for Men or Women Comfort, 10.5”x7”

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-30*