MT300 - 27.5‘’ Mountain Bike

€531,95
€824,95
Save 36%
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Delivery in 30-45 business days.

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We prioritize US warehouse shipping. If US stock is unavailable, orders will ship overseas.

Free US Shipping $29+

Shipping Fees:


We provide clear and detailed shipping fees based on the order amount and shipping method:

- Standard Shipping:
- Order Amount Below $29: Shipping Fee - $4.99
- Delivery Time: 3-4 business days

- Free Shipping:
- Order Amount $29 and over: Free 📦

 

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.

30-Day Free Return

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.

2-Year Product Warranty

At ROCKBROS, we offer a worry-free 2-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.

MT300 · 27.5" Mountain Bike

Built for versatile trail riding

A lightweight aluminum mountain bike featuring adjustable suspension, Shimano CUES shifting, mechanical disc brakes and CST all-terrain tires.

27.5" Mountain Bike
MT300 27.5-inch mountain bike
Frame Aluminum
Wheel Size 27.5 inches
01
Construction

Frame Set

Frame ROCKBROS Aluminum 27.5"
Fork 27.5" Aluminum Suspension Fork, Spring Adjustable, Lock-out
02
Load Limits

Weight Capacity

Bike Weight 14.6 kg
Maximum Total Weight 100 kg including bike, rider and cargo
03
Performance

Drivetrain & Brakes

Shifter Shimano CUES U4000 2 × 9
Front Derailleur Shimano CUES U4000
Rear Derailleur Shimano CUES U3020 9-Speed
Crank Prowheel 24/34/42T
Cassette Shimano HG200-8 12–32T
Brakes Mechanical Disc Brakes
04
Control & Comfort

Wheels & Components

Wheels ROCKBROS Aluminum 18 mm
Tires CST All Terrains 27.5 × 2.1
Saddle ROCKBROS MTB Saddle
Seatpost ROCKBROS Aluminum
Handlebar ROCKBROS Aluminum
Stem ROCKBROS Aluminum
MT300 Sizing Guide

Find your ideal frame size

Use rider height as your starting point. Riding style, body proportions and personal fit preferences may also influence your ideal size.

Frame Size Small
16"
Recommended Height 160–175 cm
Most Versatile
Frame Size Medium
18"
Recommended Height 170–185 cm
Frame Size Large
21"
Recommended Height 175–198 cm
i

Between two sizes? Choose the smaller frame for more agile handling, or the larger frame for a more extended and stable riding position.

Visual Reference

MT300 Frame Geometry

Measurements A–K
MT300 frame geometry diagram showing measurements A through K
Complete Measurements

Frame geometry comparison

All linear measurements are shown in millimeters.

S M L
A
Seat Tube Length Frame height reference
406 457 533
B
Seat Tube Angle Rider position angle
73.5° 73.5° 73.5°
C
Upper Tube Length Effective top-tube reach
554 554 554
D
Head Tube Length Front frame height
120 120 120
E
Head Tube Angle Steering geometry
70° 70° 70°
F
Front Fork Offset Fork rake
45 45 45
G
Wheelbase Axle-to-axle length
1057 1057 1057
H
Chainstay Length Rear-center length
430 430 430
I
Bottom Bracket Drop Crank position below axle line
40 40 40
J
Stack Vertical cockpit position
605 605 605
K
Reach Horizontal cockpit position
375 375 375
Geometry measurements are based on the standard factory configuration. Minor variations may occur depending on installed components and measurement methods.

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