Brand Devel. Firebird MTB Titanium Frame. •SMALL 15.5” •MEDIUM 17” •LARGE 19” •FREE BBB DRIFIT SHIRT! •FREE DEVEL RACEPROVEN FACEMASK! •headset and thru axle included •bolt type seatpost clamp Features -Competitive XC Race Geometry -Full internal cable routing -Seamless Aerospace Grade 3Al/2.5V Titanium Tubing -Tapered 1 1-8” to 11-2” head tube system -42/52 tapered headset -31.6 seatpost size -12x148mm Boost thru-axle -Low profile post-style disc brake mount -One-piece cast chain-stay yoke 27.5/29 conversion