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Bird Zero AM Frame

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Product Bird Zero AM Frame
Riding Type Trail, Enduro / All-Mountain
Rider Unisex
Sizes and Geometry
SM (150mm fork, 160mm fork), MD (150mm fork, 160mm fork), ML (150mm fork, 160mm fork), LG (150mm fork, 160mm fork), XL (150mm fork, 160mm fork) View Geometry
Size SM (150mm fork, 160mm fork) MD (150mm fork, 160mm fork) ML (150mm fork, 160mm fork) LG (150mm fork, 160mm fork) XL (150mm fork, 160mm fork)
Top Tube Length 580mm 605mm 630mm 655mm 680mm
Head Tube Angle 64.5°, 64.1° 64.5°, 64.1° 64.5°, 64.1° 64.5°, 64.1° 64.5°, 64.1°
Head Tube Length 110mm 110mm 120mm 120mm 130mm
Seat Tube Angle 74.0°, 73.6° 74.0°, 73.6° 74.0°, 73.6° 74.0°, 73.6° 74.0°, 73.6°
Seat Tube Length 380mm 410mm 440mm 470mm 500mm
Bottom Bracket Height 305mm (45mm drop), 308mm (42mm drop) 305mm (45mm drop), 308mm (42mm drop) 305mm (45mm drop), 308mm (42mm drop) 305mm (45mm drop), 308mm (42mm drop) 305mm (45mm drop), 308mm (42mm drop)
Chainstay Length 420mm 420mm 420mm 425mm 425mm
Wheelbase 1150mm 1175mm 1201mm 1226mm 1253mm
Reach 425mm 450mm 472mm 497mm 519mm
Stack 615mm 615mm 624mm 624mm 633mm
* Additional Info Head Tube Angle, Seat Tube Angle, and Bottom Bracket Height given for static (non-sagged) position.
Wheel Size 27.5" (650b), 27.5+
Frame Material Aluminum
Frame Material Details 6066-T6 alloy tubeset
Rear Travel Hardtail
Rear Shock N/A
Head Tube Diameter Tapered, 1.125" top, 1.5" bottom
Bottom Bracket 73mm threaded
Rear Dropout / Hub Dimensions 148x12mm Boost
Front Derailleur Size Clamp-on; 34.9mm outer seat tube diameter
Seatpost Diameter 31.6mm
Max Tire Size 27.5" x 2.8"
Bottle Cage Mounts Yes (single)
Colors Atomic Blue, Anodized Black, Yellow, Stealth Black
Warranty Lifetime frame, 2 years paint and Bird components
Weight 4 lb 6.5 oz (2,000 g)
Miscellaneous 2019-2020 version
UK price: 475 GBP
Multiple customizations options available at Bird website for rear axle, seatpost clamp, and headset
External cable routing with internal dropper seatpost routing
160mm post-mount rear brake tabs
Designed for 150-160mm travel forks
Weight given for size ML frame
Price N/A
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