SPECIFICATIONS Size : 17.5, 18.5 Inch Frame : Aluminium Alloy Disc & V-Brake Compatible , Replaceable Derailleur Hanger Fork : Raleigh Suspension Fork With Mechanical Lock out Bottom Bracket : Sealed Cartridge Crank Set : 24x34x42 PROWHEEL Pedal : PVC with Steel Cage Front Derailleur : Shimano Tourney FD-TY500 Rear Derailleur : Shimano Altus RD-M310 Shifters : Shimano EZ Fire Plus Shift/Brake Lever Set ST-EF-500 3X8 Speed Chain : KMC Rims : Raleigh Double Wall Alloy 36H Hubs : Alloy 36H Tires : Kenda 27.5 x 2.10 Brake Set : Tektro Mechanical Disc Brakes Head Set : Neco Threadless Handle Bar : Zoom Alloy Grips : Soft Rubber Compound, Smaller Diameter 130mm Stem : Zoom Alloy Seat Post : Raleigh Alloy 31.6mm Saddle : Selle Royal Seat Clamp : QR alloy Cassette : Shimano CS-HG200-8 (32-12T)