Best for hard intervals
Sunny Health & Fitness SF-B901SMART
FitScore for Budget Exercise Bike
- ResistanceFriction, stepless knob
- Max user weight275 lb
- Warranty3 year frame, 6 months p…
- Product weight100.4 lb
Choose it if you want a forward spin position, a 40-lb flywheel, stepless resistance and transport wheels, and a 275-lb rating covers you.
Best for back support
MERACH S08
FitScore for Budget Exercise Bike
- ResistanceMagnetic, 8 levels
- Max user weight300 lb
- Warranty2 year (frame and parts)
- Product weight57 lb
Choose it if you want a seat with a backrest, magnetic resistance, a 300-lb rating and Zwift or Kinomap support in a frame under 52 inches long.
Overall winner for budget exercise bike buyers: Sunny Health & Fitness SF-B901SMART, by 1.8 points (71.6 against 69.8) with the weights of our best budget exercise bike guide. It leads on performance, practicality and features. The MERACH S08 leads on affordability, durability and comfort.
Sunny Health & Fitness SF-B901SMART wins 3 rounds- MERACH S08 wins 2 rounds
Product photos from Amazon. FitScore weights are explained below.
Merach S08 vs Sunny SF-B901SMART: the Sunny is a spin bike with a 40-lb flywheel and stepless resistance, while the Merach is a recumbent with a backrest, 8 magnetic levels and a 300-lb rating. Our FitScore favors the Sunny for most budget exercise bike buyers.
Head-to-Head Specs
Here are the two side by side. A check mark shows the stronger spec on each line. Check both warranties before you order: the FTC explains how to read a product warranty. The CDC recommends that adults get at least 150 minutes of moderate-intensity aerobic activity a week, which steady cycling counts toward. Harvard Health Publishing lists about 252 calories in 30 minutes of moderate stationary cycling for a 155 lb person.
| Specification | Sunny Health & Fitness SF-B901SMARTFitScore 71.6 | MERACH S08FitScore 69.8 |
|---|---|---|
| Type | Spin (indoor cycling) | Recumbent |
| Resistance | Friction, stepless knob✓ | Magnetic, 8 levels |
| Flywheel | 40 lb✓ | Not stated |
| Max user weight | 275 lb | 300 lb✓ |
| Size (length × width) | 61.8 × 19.7 in | 51.97 × 25 in |
| Product weight | 100.4 lb | 57 lb✓ |
| Rider fit | Inseam 29.1-42.1 in | Riders 5’3″-6’2″ |
| Seat and handlebar | 2-way handlebar | Not stated |
| Console and programs | Basic LCD console (programs not stated) | Basic LCD console (programs not stated) |
| Bluetooth and apps | Bluetooth, SunnyFit (free) | Bluetooth, Merach (free), Kinomap, Zwift |
| Heart rate | Pulse grips | Not stated |
| Membership | None needed | None needed |
| Storage and moving | Transport wheels, 100.4 lb | No transport wheels listed, 57 lb |
| Warranty | 3 year frame, 6 months parts✓ | 2 year (frame and parts) |
| Specs won | 3 of 14 | 2 of 14 |
Check Amazon for current pricing and availability.
FitScore Duel
Both scores use the weights of our best budget exercise bike guide (how we score). Affordability (35%) counts most, then durability (20%), performance and comfort (15% each), practicality (10%) and features (5%). The Sunny Health & Fitness SF-B901SMART ranks #1 in that guide. The MERACH S08 ranks #2 in that guide. The order flips with other weights: in our best exercise bike for seniors guide the MERACH S08 scores 65.7 against 64.9 for the Sunny Health & Fitness SF-B901SMART.
Key Differences
- Type: Spin (indoor cycling) on the Sunny Health & Fitness SF-B901SMART; Recumbent on the MERACH S08.
- Resistance: Friction, stepless knob on the Sunny Health & Fitness SF-B901SMART; Magnetic, 8 levels on the MERACH S08.
- Flywheel: 40 lb on the Sunny Health & Fitness SF-B901SMART; not stated on the MERACH S08.
- Max user weight: 275 lb on the Sunny Health & Fitness SF-B901SMART; 300 lb on the MERACH S08.
- Size (length × width): 61.8 × 19.7 in on the Sunny Health & Fitness SF-B901SMART; 51.97 × 25 in on the MERACH S08.
- Product weight: 100.4 lb on the Sunny Health & Fitness SF-B901SMART; 57 lb on the MERACH S08.
- Rider fit: Inseam 29.1-42.1 in on the Sunny Health & Fitness SF-B901SMART; Riders 5’3″-6’2″ on the MERACH S08.
- Seat and handlebar: 2-way handlebar on the Sunny Health & Fitness SF-B901SMART; not stated on the MERACH S08.
Round 1 of 5
Merach S08 vs Sunny SF-B901SMART: Resistance and Flywheel
Sunny Health & Fitness SF-B901SMART wins this round
Here is how the two compare on the work the machine does.
Resistance: Friction, stepless knob on the Sunny Health & Fitness SF-B901SMART, Magnetic, 8 levels on the MERACH S08.
Flywheel: 40 lb on the Sunny Health & Fitness SF-B901SMART; not stated on the MERACH S08.
Performance score in this comparison: Sunny Health & Fitness SF-B901SMART 85, MERACH S08 40.
Round 2 of 5
Capacity, Frame and Warranty
MERACH S08 wins this round
Capacity and warranty are the stated measures of build.
Max user weight: 275 lb on the Sunny Health & Fitness SF-B901SMART, 300 lb on the MERACH S08.
Warranty: 3 year frame, 6 months parts on the Sunny Health & Fitness SF-B901SMART, 2 year (frame and parts) on the MERACH S08.
Durability score in this comparison: Sunny Health & Fitness SF-B901SMART 50.14, MERACH S08 52.62.
Round 3 of 5
Fit and Riding Position
MERACH S08 wins this round
Type: Spin (indoor cycling) on the Sunny Health & Fitness SF-B901SMART, Recumbent on the MERACH S08.
Rider fit: Inseam 29.1-42.1 in on the Sunny Health & Fitness SF-B901SMART, Riders 5’3″-6’2″ on the MERACH S08.
The riding positions differ: the Sunny has you lean forward over the handlebar like an indoor cycling class, while the Merach seats you against a backrest with the pedals in front.
Comfort score in this comparison: Sunny Health & Fitness SF-B901SMART 70, MERACH S08 81.
Round 4 of 5
Size, Weight and Moving
Sunny Health & Fitness SF-B901SMART wins this round
Size (length × width): 61.8 × 19.7 in on the Sunny Health & Fitness SF-B901SMART, 51.97 × 25 in on the MERACH S08.
Product weight: 100.4 lb on the Sunny Health & Fitness SF-B901SMART, 57 lb on the MERACH S08.
Storage and moving: Transport wheels, 100.4 lb on the Sunny Health & Fitness SF-B901SMART, No transport wheels listed, 57 lb on the MERACH S08.
Practicality score in this comparison: Sunny Health & Fitness SF-B901SMART 51, MERACH S08 49.
Round 5 of 5
Console, Apps and Extras
Sunny Health & Fitness SF-B901SMART wins this round
Console and programs: both list basic LCD console (programs not stated).
Bluetooth and apps: Bluetooth, SunnyFit (free) on the Sunny Health & Fitness SF-B901SMART, Bluetooth, Merach (free), Kinomap, Zwift on the MERACH S08.
Heart rate: Pulse grips on the Sunny Health & Fitness SF-B901SMART; not stated on the MERACH S08.
Features score in this comparison: Sunny Health & Fitness SF-B901SMART 35, MERACH S08 25.
Who Should Buy Each
Riders who want a gym-style workout
Pick the Sunny SF-B901SMART if you want to ride out of the saddle and push hard intervals; owners call it solid and easy to build, and the stock seat is their most common complaint.
Riders who want back support
Pick the Merach S08 if you want to sit back while you pedal and ride with an app; owners call it quiet, sturdy and easy to use, with seat adjustment as the weak point.
Consider Instead
MERACH S26
If neither fits, look at the MERACH S26: it offers a higher durability and practicality score than the Sunny Health & Fitness SF-B901SMART. It ranks #3 in our best budget exercise bike guide.
Final Verdict
Overall winner for budget exercise bike buyers: Sunny Health & Fitness SF-B901SMART. Pick the Sunny SF-B901SMART for the heavier flywheel, stepless resistance and wheels; pick the Merach S08 for a backed seat, magnetic resistance and a 300-lb rating.
Sunny Health & Fitness SF-B901SMART vs MERACH S08 FAQ
With the weights of our best budget exercise bike guide, the Sunny Health & Fitness SF-B901SMART scores higher: 71.6 against 69.8. It leads on performance, practicality and features, while the MERACH S08 leads on affordability, durability and comfort.
A recumbent bike: you sit against a backrest with the pedals in front. The Sunny SF-B901SMART is a spin bike with a forward riding position.
The Merach S08: it is rated for 300 lb, against 275 lb for the Sunny.
No. The Sunny uses the free SunnyFit app and the Merach the free Merach app. The Merach can also pair with Zwift or Kinomap, which are separate services.
Explore More Exercise Bike Guides
Sunny Health & Fitness SF-B901SMART Review
MERACH S08 Review
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