27.5 Inch Mountain Bike 21-Speed Bicycle, Aluminum Frame,Suspension Fork, Double Disc Brake

*Main Accessory:
Frame: 27.5″ high-strength all-aluminum alloy frame
Front fork: steel suspension fork
seatpost: aluminum
Tyre/inner tube: 27.5″*2.1, rubber
Rim: 27.5″*1.75, black, AL
Crank: Aluminum, 9/16″ pedal hole
Pedal: 9/16″, aluminum
Front/rear reflector: white¡Á1, red¡Á1, PVC
Rear derailleur protector: steel, black


*Brake System:
Front/rear caliper: steel, double disc brakes
Brake Disc: Steel, 160mm
Brake cables: plastic/steel
Handelbar: Steel
Aheadset Stem: Aluminum


*Transmission System:
Front derailleur: Shimano FDTZ500
Rear derailleur: Shimano ARDTZ500D
Front shift lever set: SHIMANO EF500-3, 3-speed positioning on the left
Rear shift lever set: SHIMANO EF500-7, 7-speed positioning on the right
Crankset: 170MM, steel
Cassette: Steel, 7-level positioning, brown/black
Chain:steel, brown


*Weight:
Gross weight: about 20.5kg (45.2lb)
Net weight: about 19kg (41.9lb)


*Notice:
1. Applicable height range: 5¡¯3¡± to 6¡¯.
2. This bicycle has completed 90% of the assembly. After you receive it, you only need to install the front wheels (quick release), handlebars, saddles, pedals, and check the tire pressure before riding. The front and rear reflectors and rear derailleur protectors can be selectively installed according to your needs.
3. We provide English installation manual. Contains very detailed installation methods and problem analysis (full coverage, not limited to this bike). Please read carefully before installing and debugging the bicycle, or watch our installation video. 
4. “L, R” are marked on the spindle of the pedal on the left and right side. Please pay attention to this mark before installation.
5. We provide all the tools needed to install the bicycle.You no longer need other additional tools.


Date First Available ‏ : ‎ August 24, 2021
Manufacturer ‏ : ‎ YilwnnCse
ASIN ‏ : ‎ B09DGSQ5GL

[27.5″Aluminum alloy frame] The frame of the YilwnnCse bicycle is all made of aluminum alloy. Lighter, anti-rust, anti-oxidation, strong and durable. is lighter than steel for easier acceleration and easier handling. Suitable for adults and teenagers with a height of 5¡¯3¡± to 6¡¯, with a load-bearing capacity of about 110kg, it will be a great choice whether it is used by yourself or as a gift for children and friends.
[Shimano transmission system] Shimano front/rear derailleur, Shimano left/right Shift Lever Set, bring you a smoother riding experience. Shifting is more convenient and durable. Excellent quality brings you a pleasant riding experience.
[Front shock absorber & double disc brake] This bike adopts front shock absorber and hard tail design, suitable for daily riding and road riding. Steel suspension front fork,The good shock absorber effect brings you a comfortable experience. Double disc brake system for better braking effect.
[Installation]This bicycle has completed 90% of the assembly. After you receive it, you only need to install the front wheels (quick release), handlebars, saddles, pedals, and check the tire pressure before riding. The front and rear reflectors and rear derailleur protectors(available for free) can be selectively installed according to your needs.We provide all the tools needed to install the bicycle
[Our Service] We provide quick response before sales and after-sales service. If you have any questions about the product, you can contact us by email at any time. Note: After riding for a period of time, your bicycle may need to be fine-tuned.(The cables of the new bicycle is relatively tight) .This is not a quality problem but a normal phenomenon. Please follow the instructions.