DMASUN Exercise Bike
- Exercise Bike
- 330 pounds
- Battery
- 100
- Better rated than 82%
A sturdy, quiet magnetic bike that reviewers consistently describe as stable and easy to assemble, with real fixes for the loose pedal and hard seat complaints common on cheaper bikes.
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How it ranks among the 94 exercise bikes we track
4.8★ across 294 Amazon ratings, Bayesian-smoothed toward the category average.
294 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
200+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 94 exercise bikes we track - how the scorecard works · full exercise bikes data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 30, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This DMASUN exercise bike pairs a 35 lb magnetic flywheel with a 330 lb weight rating, plus anti-loosening pedal nuts and a padded seat cover added to address the two most common complaints on bikes like this.
DMASUN says it added the anti-loosening pedal hardware and thicker seat cushion after collecting complaints on earlier bike designs, and reviewers do call out both features by name. Resistance runs on a magnetic system rated under 20dB, and the console lets a Wahoo sensor pick up RPM from the crank if you want that data outside the bike's own display.
- 35 lb flywheel rated to 330 lbs
- Magnetic resistance under 20dB
- Compatible with Wahoo RPM sensors and SPD pedals
- Fits riders from about 4.8 to 6.1 feet tall
Who it's for
Fits home riders who want a stable, quiet bike for daily indoor cycling and do not need a screen based training program built in. Shorter or older riders who need the handlebars angled back toward them should weigh that against reach, since one reviewer flagged it as a limitation.
What buyers say
From Amazon customer reviews.
Buyers highlighted quiet magnetic resistance, sturdy build quality, easy 30-minute assembly, and the anti-loosening pedal hardware; one reviewer wanted handlebars that tilt back so shorter or older riders can reach them more comfortably.
Strengths and trade-offs
Drawn from this product's published specifications.
- Handlebars do not tilt back, an awkward reach for some shorter riders
- Resistance is manual, no app-driven programs
Performance notes
The 35 lb flywheel and magnetic brake give a resistance range described as running from a light warm up band up to a harder muscle building band, adjusted by hand rather than motorized presets. The display tracks time, speed, distance and calories and resets with a long press; RPM can also be picked up by a Wahoo sensor at the crank for riders who log data elsewhere.
Specifications
| Brand | DMASUN |
|---|---|
| Model | 8702 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 330 pounds |
| Item Weight | 66 pounds |
| Minimum Height | 57.6 inches |
| Maximum Height | 73.2 inches |
| Item Dimensions D x W x H | 45 × 20 × 45 inches |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Material | Alloy Steel |
| Color | Orange |
| Other details | |
| Number of Resistance Levels | 100 |
| Recommended Uses For Product | Indoor |
| Resistance Mechanism | Magnetic |
| Special Features | Full Filled Solid Flywheel, Magnetic Resistance, Reinforce the Anti-loosening Nuts of the Pedals, Ultra Quiet, Heavy Duty, Thickened Steel, Fashionable Appearance, Digital Display, Compact |
| Part Number | 8702 |
| Drive System | Belt |
How it compares
This product against the closest alternatives we track in exercise bikes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| DMASUN Exercise BikeThis product | 4.8 / 5 | 294 | 4.1 / 5 |
| YOSUDA Exercise BikeYOSUDA | 4.4 / 5 | 25,034 | 4.5 / 5 |
| leikefitness LEIKE X Bike Ultra-Quiet Folding Exercise Bikeleikefitness | 4.4 / 5 | 6,700 | 4.5 / 5 |
| Sunny Health & Fitness Magnetic Exercise BikeSunny | 4.5 / 5 | 3,500 | 4.5 / 5 |
| Exerpeutic Foldable Exercise BikeExerpeutic | 4.6 / 5 | 23,100 | 4.4 / 5 |
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Questions about the DMASUN 8702
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How long does assembly take?
DMASUN ships the bike about 70% pre-assembled, and reviewers report finishing the remaining setup in around 30 minutes.
Can I connect a cadence sensor?
Yes, the bike is listed as compatible with Wahoo sensors for RPM pickup at the crank position, and it also works with SPD pedals.
What is the weight limit?
It is rated for riders up to 330 lbs on a 35 lb flywheel.