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- Free Shipping:📦
Shipping Info
- US Warehouse In-stock: 3–4 business days
- 🌍International Shipping (if US out of stock): 7–10 business days
🚲 Bicycle Shipping
Delivery Times:
- Standard: 40–60 business days
- Expedited: 18–20 business days
Shipping Fees:
- Small Bikes: $20 (Standard) | $70 (Expedited)
- Large Bikes: $100 (Standard) | $250 (Expedited)
No extra taxes. Choose the option that works best for you.
We offer a 30-day hassle-free return and exchange policy starting from the date you receive your item. To be eligible, products must be unworn, unused, with tags attached, in original packaging, and accompanied by proof of purchase. If the item is defective, damaged, or incorrect, we cover the return shipping cost; for size or personal preference returns, the customer is responsible for shipping fees. Please inspect your order within 72 hours and contact us for any issues. EU customers have a 14-day no-questions-asked return right. Refunds will be processed within 10 business days after we receive and inspect your return. Please contact customer service before returning items and send returns to the designated address; unauthorized returns will not be accepted. For questions, email service@rockbrosbike.us.
At ROCKBROS, we offer a worry-free 1-year warranty to ensure your satisfaction. Whether it's a defect or product issue, simply reach out to us at service@rockbrosbike.us with your order details. We'll handle the rest to make sure your experience is smooth and hassle-free.

Product FEATURES
| Category | Item | Specification |
|---|---|---|
| Frame Set | Frame | ROCKBROS Aluminum 27.5" |
| Fork | 27.5" Aluminum Suspension Fork, Spring Adjustable, Lockout | |
| Weight | Bike Weight | 14.6 kg |
| Weight Limit | Max total load: 100 kg (bike + rider + cargo) | |
| Drivetrain | Shifter | Shimano Tourney EF500, 3×8 Speed |
| Front Derailleur | Shimano Tourney TY300 | |
| Rear Derailleur | Shimano Altus M310, 8-Speed | |
| Crankset | Prowheel 24/34/42T | |
| Cassette | Shimano HG200-8, 12–32T | |
| Brakes | Mechanical Disc Brakes | |
| Wheels | Wheels | ROCKBROS Aluminum, 18mm |
| Tires | CST All Terrains 27.5*21.95 | |
| Components | Saddle | ROCKBROS MTB Saddle |
| Seatpost | ROCKBROS Aluminum | |
| Handlebar | ROCKBROS Aluminum | |
| Stem | ROCKBROS Aluminum |



1. Sleek Design, Pro Performance
The internally routed aluminum frame combines aerospace-grade lightness with a clean, modern profile. Internal cable routing protects brake and gear lines from mud, rain, and debris while enhancing aesthetics. Built to rival high-end models, it offers durability and style for riders seeking value without compromise.
2. Tuned Control for Every Terrain
A mechanical lockout suspension fork with spring preload adjustment lets you switch between efficiency and cushioning. Lock it for climbs to maximize power transfer, unlock for descents to absorb rocks and roots. Paired with mechanical disc brakes, the calipers deliver reliable, low-maintenance stopping power—in rain, dirt, or mud.
3. Shimano 24-Speed Precision
Equipped with a Shimano Altus 3×8 drivetrain, this bike masters steep climbs and fast flats. Smooth gear shifts and a wide gear range let beginners tackle trails or commutes effortlessly, while pros appreciate crisp responsiveness on technical sections.
4. Conquer Trails, Defy Flats
27.5×1.95" puncture-resistant tires feature a reinforced casing to repel thorns and sharp debris. Deep treads bite into loose terrain, while sidewall support boosts cornering stability. From rocky paths to urban streets, these tires balance speed, grip, and flat protection for worry-free adventures.
5. Precision Fit, Trail-Tailored Sizing
The 16" (Size S) frame fits riders 160–175 cm, 18" (Size M) fits 170–185 cm, and 21" (Size L) fits 175–198 cm. Each size features ergonomic geometry to optimize posture and dynamic control across singletracks or endurance trails.
| Category | Item | Specification |
|---|---|---|
| Frame Set | Frame | ROCKBROS Aluminum 27.5" |
| Fork | 27.5" Aluminum Suspension Fork, Spring Adjustable, Lockout | |
| Weight | Bike Weight | 14.6 kg |
| Weight Limit | Max total load: 100 kg (bike + rider + cargo) | |
| Drivetrain | Shifter | Shimano Tourney EF500, 3×8 Speed |
| Front Derailleur | Shimano Tourney TY300 | |
| Rear Derailleur | Shimano Altus M310, 8-Speed | |
| Crankset | Prowheel 24/34/42T | |
| Cassette | Shimano HG200-8, 12–32T | |
| Brakes | Mechanical Disc Brakes | |
| Wheels | Wheels | ROCKBROS Aluminum, 18mm |
| Tires | CST All Terrains 27.5*21.95 | |
| Components | Saddle | ROCKBROS MTB Saddle |
| Seatpost | ROCKBROS Aluminum | |
| Handlebar | ROCKBROS Aluminum | |
| Stem | ROCKBROS Aluminum |



1. Sleek Design, Pro Performance
The internally routed aluminum frame combines aerospace-grade lightness with a clean, modern profile. Internal cable routing protects brake and gear lines from mud, rain, and debris while enhancing aesthetics. Built to rival high-end models, it offers durability and style for riders seeking value without compromise.
2. Tuned Control for Every Terrain
A mechanical lockout suspension fork with spring preload adjustment lets you switch between efficiency and cushioning. Lock it for climbs to maximize power transfer, unlock for descents to absorb rocks and roots. Paired with mechanical disc brakes, the calipers deliver reliable, low-maintenance stopping power—in rain, dirt, or mud.
3. Shimano 24-Speed Precision
Equipped with a Shimano Altus 3×8 drivetrain, this bike masters steep climbs and fast flats. Smooth gear shifts and a wide gear range let beginners tackle trails or commutes effortlessly, while pros appreciate crisp responsiveness on technical sections.
4. Conquer Trails, Defy Flats
27.5×1.95" puncture-resistant tires feature a reinforced casing to repel thorns and sharp debris. Deep treads bite into loose terrain, while sidewall support boosts cornering stability. From rocky paths to urban streets, these tires balance speed, grip, and flat protection for worry-free adventures.
5. Precision Fit, Trail-Tailored Sizing
The 16" (Size S) frame fits riders 160–175 cm, 18" (Size M) fits 170–185 cm, and 21" (Size L) fits 175–198 cm. Each size features ergonomic geometry to optimize posture and dynamic control across singletracks or endurance trails.


