Bird Forge Frame

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Bird

Where To Buy
	Free shipping on orders over $50 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Frames
	Free U.S. shipping on everything. International shipping available. Some exclusions apply.	Browse available Frames
	Free shipping on orders over $69 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Frames

Specifications

Product

Bird Forge Frame

Intended Use

Enduro / All-Mountain

Trail

Rider

Unisex

Sizes and Geometry

View Full Geometry

Size	MD	ML	LG	XL
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.

Sizes 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.

View Full Geometry

Size	MD	ML	LG	XL
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

4130 steel with Reynolds 853 DZB top tube and down tube, 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"

ISCG Tabs

ISCG05

Bottle Cage Mounts

Two inside front triangle

Colors

Matte Stealth, Tuscan Teal

Warranty

Lifetime frame, 2 years paint and Bird components

Weight

N/A

Miscellaneous

• 2021-2025 version
• Designed for 140-160mm travel forks
• SRAM UDH (Universal Derailleur Hanger)
• External cable routing
• IS rear brake mounts

Price

$805.00

More Info

bird.bike

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Where To Buy
	Free shipping on orders over $50 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Frames
	Free U.S. shipping on everything. International shipping available. Some exclusions apply.	Browse available Frames
	Free shipping on orders over $69 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Frames