The SE Bikes Killer Quad 27.5" Bike is another crazy creation from SE. The Killer Quad uses the iconic quad angle style frame design with the loop tail rear end. 10 speeds for going fast, 27.5" x 2.5" tires for handling good, and a high quality finish for looking badass.-6061 Aluminum Killer Quad frame with oversized downtube, integrated headset, water bottle mounts, and looptail rear end -Full Cr-Mo Landing Gear forks -SE Racing forged alloy 2-piece cranks with 24mm hollow alloy spindle, external sealed bearing bottom bracket, and alloy chainring -FSA Orbit CE integrated sealed bearing headset -Maxxis Hookworm 27.5" x 2.5" tires -MicroShift XLE RD-M61S 1x10 short-cage derailleur -Sealed-bearing rear alloy hub with double-wall rims and MicroShift 11--32T 10-speed cassette -Shimano MT200 hydraulic disc brake, dual piston, 160mm rotor-NEW SE Captive Seat with concave design for ultimate hold and comfort