ROCKBROS SKN 20"Adults Folding Bike 7-Speed Variable Speed Disc Brake Commuting
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About this product
The ROCKBROS SKN 20-inch Adults Folding Bike is a 7-speed commuter bicycle equipped with mechanical disc brakes. It features a 20-inch chromoly steel folding frame and fork, along with aluminum alloy rims and tubeless tires. This 2025 model includes SHIMANO shifters and rear derailleur, a comfort saddle, fenders, and an expanded rear rack. Designed for unisex adults, it offers an adjustable seat, folding pedals, and a 3-year manufacturer warranty.
Our take
This ROCKBROS folding bike is well-appointed for an adult commuter seeking convenience and performance. The 7-speed Shimano drivetrain is a reliable choice for varying urban landscapes, and mechanical disc brakes are a significant upgrade for consistent stopping power in diverse conditions compared to rim brakes. The chromoly steel frame offers a good balance of durability and ride quality, and the aluminum alloy rims with tubeless tires are a nice touch for reducing flats and providing a smoother ride. Practical features like fenders, an adjustable seat, folding pedals, and an expanded rear rack enhance its utility. The 3-year warranty is also a reassuring commitment from the manufacturer.
Pros & Cons
Pros
- 7-speed SHIMANO drivetrain
- Mechanical disc brakes for strong stopping
- Chromoly steel folding frame for durability
- Aluminum alloy rims and tubeless tires
- Includes fenders and expanded rear rack
Cons
- Chromoly steel can be heavier than aluminum
- 20-inch wheels offer less stability than larger wheels
Specifications
- Handlebar Type Flat Bar
- Wheel Size 20 in
- Frame 20" Chromoly Steel Folding Frame
- Spokes 14G Medium Carbon Steel with Iron Nipples
- Item Length 151cm
- Number of Speeds 7 Speed
Show all 43 specifications
- Stem
- Medium Carbon Steel Folding Stem
- Shifters
- SHIMANO SL-RV300
- Vintage
- No
- Handlebar
- Medium Carbon Steel Flat Bar
- Saddle
- Comfort Saddle
- Rear Derailleur
- SHIMANO RD-TY21B, 7-Speed
- Department
- Unisex Adults
- Model Year
- 2025
- Unit Type
- Unit
- Manufacturer Warranty
- 3 Years
- Item Height
- 94.5-108.5cm
- Tubes
- Schrader Valve (A/V) 48L
- Features
- Adjustable Seat, Free quick release pig nose, Mechanical cable disc brake, Expanded rear rack, Double bearing hub, T-handlebar, Adjustable length of iron riser, Folding pedals, Fenders, Lightweight, Rear Bike Rack
- Rims
- Aluminum Alloy Rims
- Unit Quantity
- 1
- Brakes
- Mechanical Disc Brakes
- Hubs
- Front Steel Hub / Rear Iron Hub
- Frame Number
- 1
- Bike Type
- Folding Bike
- Freewheel
- SHUNFENG 7-Speed Freewheel, 14–28T
- Tire Type
- Tubeless Tires
- Crankset
- JIANKUN Steel Crankset, 52T, 170mm
- Material
- Aluminum Alloy
- Front Fork
- 20" Chromoly Steel Fork
- California Prop 65 Warning
- no
- Brand
- ROCKBROS
- Seatpost
- 31.8mm Aluminum Alloy Seatpost
- Custom-Built
- No
- Brake Type
- Disc Brake - Mechanical
- Suspension Type
- No Suspension
- Model
- 70030008
- Shifter Style
- Grip Shifter
- Gear Change Mechanism
- Derailleur Gears
- Item Weight
- 15.6 kg (34.4 lbs)
- Country of Origin
- China
- Frame Size
- 20 in
- Package Size
- 85*40*66cm
