Cnc aluminum 7075 and hard anodized parts : -. All turnbuckles/ all balls/ pivot balls /rear hubs /steering racks chassis: -. 3mm lightweight hard anodized aluminum -. +5 degrees of caster angle rear suspension mount length +4mm, rear wheel hubs length +2mm. Offset total +4mm each side, more stable at high speed. Front suspension mount has more holes for lower arms to change the roll centre setup. Drive: -. 4wd drivetrain -. Hardened steel center driveshaft -. Front and rear hardened steel universal driveshaft -. 17mm rear wheels hub (length +2mm) -. Anti-loose wheel nut -. Hardened steel drive cup differential: -. Bevel gear type -. Front differential filled with #500k silicone oil -. Rear differential filled with #50k silicone oil -. New anti-leakage differential housing -. Hardened steel lightweight cup 2 speed transmission : -. 44t and 48t spur gear (mod 1, plastic gear) -. 15t/ 19t 2-speed pinion gear (mod 1, hardened steel gear) clutch -. New cnc aluminum clutch shoes -. 1. 1mm clutch springs dual brake and linkage 35mm lightweight flywheel adjustable engine mount optimized fuel tank with filter, capacity: 150cc carbon fiber servo tray and differential top plate cnc aluminum rear hub new cnc aluminum front top plate ball bearing: full set included shock absorber : -. Adjustable metal shock absorber -. Oil-filled 17mm big bore shock with #600 silicone oil and ring nut can be adjusted to change the hardness of spring -. 4mm diameter shaft shock tower: -. New 4mm thick cnc aluminum front and rear tower -. Tower plate with multiple holes for fixing the shock absorbers to change the setup suspension: -. Front and rear adjustable sway bar -. Front pbs, reinforced composite upper arms and lower arms -. Front lower with droop screw -. Adjustable roll centre of front lower arms and front upper arms extra battery box caster: adjustable camber: adjustable (hb-gt2)