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Bird Forge Stainless Frame

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Product Bird Forge Stainless Frame
Riding Type Trail, Enduro / All-Mountain
Rider Unisex
Sizes and Geometry
MD, ML, LG, XL View Geometry
Top Tube Length 605mm 630mm 655mm 680mm
Head Tube Angle 65.8° 65.8° 65.8° 65.8°
Head Tube Length 100mm 110mm 120mm 130mm
Seat Tube Angle 76.8° 76.8° 76.8° 76.8°
Seat Tube Length 395mm 420mm 445mm 470mm
Bottom Bracket Height 290mm (87mm drop) 290mm (87mm drop) 290mm (87mm drop) 290mm (87mm drop)
Chainstay Length 430mm 430mm 435mm 435mm
Wheelbase 1183mm 1210mm 1242mm 1269mm
Reach 449mm 473mm 496mm 518mm
Stack 654mm 663mm 672mm 681mm
* Additional Info All specifications listed are with 140mm travel fork with 551mm axle-to-crown length and 42mm offset, at 30% sag; see Bird website for unsagged values and with 150mm and 160mm forks.
Wheel Size 29"
Frame Material Steel
Frame Material Details KVA MS3 stainless steel, investment cast chainstay yoke
Rear Travel Hardtail
Rear Shock None
Head Tube Diameter Tapered, 1.125" top, 1.5" bottom
Bottom Bracket 73mm English/BSA threaded
Rear Dropout / Hub Dimensions 148x12mm Boost
Front Derailleur Size
Seatpost Diameter 31.6mm
Max Tire Size 29" x 2.6"
Bottle Cage Mounts Two inside front triangle
Colors Brushed Stainless Steel with gloss clearcoat
Warranty Lifetime frame, 2 years Bird components
Miscellaneous • 2022 version
• Designed for 140-160mm travel forks
• SRAM UDH (Universal Derailleur Hanger)
• External cable routing with internal dropper seatpost routing
• IS rear brake mounts
Price $1,874.58
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