Aluminum frame (High Quality Aluminum 29 / 27 MTB Frame Strong MTB Mountain Bike 29er 27.5 Bicycle Cycling BSA Thread · Light Weight UD 142mm 29er Carbon Fiber Mountain Bike MTB ...)
Hydraulic breaks set (Pulling the brake lever in a hydraulic system moves a piston inside the master cylinder which forces brake fluid towards the brake caliper)
Wheel (29er rims have an interior diameter of 622 millimeters (24.5 in) and the average 29" mountain bike tire is (in ISO notation) 59-622 – corresponding to an outside diameter of about 29.15 inches)
Handle Bar (Aluminum handlebar grip area diameters. There are only two current standard sizes: Flat bars have a 22.2 mm (7/8″) grip area diameter. Road (“drop”) bars have a 23.8 mm (15/16″) grip area diameter)