Mountain Bike Aluminum Alloy and High Carbon Steel with 2 Replaceable Seat


Full Aluminum Alloy Frame- Aluminum alloy body with high carbon steel parts, such as handle bar, chain. Sturdy materials can prevent bikes from damage, also on rainy days, strong enough to withstand any harsh environment

SKU: QT-B08FDSZS9H Category:


  • 27 Speed Professional Aluminum Mountain Bike- 3 gears front derailleur and 9 gears derailleur deliver 27 speeds of ultra smooth shifting, finger-type shifter. The front and rear double disc brakes provide powerful braking and it’s not easy to accumulate dust in the brakes
  • Excellent Shock Absorbers- 27.5×1.95in wide tires with premium aluminum suspension fork to help you smooth over gravel. With 2 replaceable saddle, 1x mountain cross-country saddle, 1x wide soft saddle, suitable for mountain roads and highways.
  • 95% Assembled- 95% of this aluminum mountain bike have been assembled, all you need to do is install the front wheels, handlebars, pedal and saddle. Then you can complete a 27.5inch SIRDAR mountain bike and enjoy the ride (Including assembly tools)

Please Note

  • The pedal has left and right side, please pay attention to the distinction
  • When you want to adjust the hexagonal screw on the stem, you need to loosen the two screws on the side
  • The screws are easy to install, so if you feel like you’re struggling or can’t assemble them, it means you’re not aligning the holes. This will cause the threads to wear
  • Recommended Height: 5″5′-6″2′, Max Weight: 330lb

Adjustable front fork

Lock it for taking less effort when you ride on flat surface; Open it for excellent shock absorption on rough road

Thicker steel tube

The thickened stainless steel pipe tube prolongs the service life, firm and solid, not easy to wear and tear.

Front and rear lights

Alert passersby and vehicles before and after to ensure safety

Anti-explosion anti-skid tires

Anti-skid and explosion-proof materials are used. Tire pattern is wear-resistant and has strong anti-puncture ability


You understand that the item you just purchased from Quest Boards is not manufactured by Quest. Quest does not manufacture, inspect, or store any non-Quest branded items sold through our website. We only offer the venue and all non-Quest branded items are produced by independent companies. Quest can not and does not make any warranties about its safety or quality of the product. Before making this purchase, you released Quest and it’s related companies and parties from any claims related to the item, including but not limited to defects, physical injury, or misinterpretations of the brand.


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