Generally speaking, ATX770 is better. It is recommended that the entry-level size of 770 is 26X 15.5, 17,19,21m frame: 09 ATX770 aluminum alloy frame front fork: RST.

09 Omega

T9

80 mm

Front fork transmission system of magnesium alloy shock absorber: Shimano

FD-M4 12 front transformer, RD-MC4 10 rear transformer, EF60 gearbox, 1 1-32T flywheel; 24-speed braking system TEKTRO

V-shaped brake pad giant hollow sports pad rim: giant

Twin aluminum alloy tires: Zheng Xin 26X 1.95 tires Other: Shimano.

M36 1

42X32X22 large toothed disc; Aluminum alloy sandblasted black vertical rod, swallow handle, 30.9 sandblasted black seat cushion rod; Giant handle; steel wire