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Bird Aeris 145 GX Eagle specification

Posted by Matt | January 23, 2019 | 1 comment so far

The original spec of the Bird Aeris 145 that Mark is now running (that’s 145mm of rear travel if you can’t work it out!). It’s a great looking bike and should be a whole lot of fun.

Bird Aeris 145 GX Eagle

Colour	Lime Green
Frame	Bird Aeris 145 full suspension 6066-T6 aluminium frame 145mm rear travel, 12x148mm, Rock Shox Maxle stealth, clearance for 27.5×2.6 tyres
Fork	RockShox Revelation RC 150mm travel, 27.5″, 15x110mm Boost, 150mm travel, Thru axle, DebonAir air spring, Motion Control RC damper cartridge, Low-speed compression adjustment to firm, Tapered steerer
Rear shock	RockShox Deluxe RT3 DebonAir air spring, External rebound, 3 position compression (Open/Pedal/Lock), 230x65mm
Wheelset	DT Swiss M1900 Spline 30 27.5″ FW 15x110mm Thru Axle, RW 12x148mm Thru Axle
Shifter	SRAM GX Eagle 1×12 speed
Rear derailleur	SRAM GX Eagle 12 speed
Cassette	SRAM GX Eagle 1275 12 speed 10-50
Chain	SRAM GX Eagle 1275
Chainset	SRAM Descendant Eagle 170mm 32T, 7k AL DUB Boost crank, 52mm chainline
Bottom Bracket	SRAM DUB BSA, 73mm
Brakes	SRAM Guide RE 4 piston, tool-free reach adjust, sintered pad
Discs	SRAM 180mm front/160mm rear
Seatpost	Race Face Aeffect Dropper 385mm / 125mm travel, 31.6mm
Saddle	Fabric Scoop Radius Sport, Cro-Mo rails, 282mm x 142mm
Headset	Bird ZS44;28.6 \| ZS56;40 Purple
Stem	Race Face Ride 35mm clamp, 50mm
Handlebar	Race Face Aeffect 760mm, 20mm Rise, 8° backsweep, 5° upsweep, 35mm clamp
Grips	Gusset S2 in purple
Tyres	Maxxis FW Minion DHF 27.5×2.50WT 3C MaxxTerra EXO TR, RW Aggressor 27.5×2.30 EXO TR Dual Compound

Bird Aeris 145 geometry chart (145mm rear travel with 150mm fork)

Sizes	S	M	ML	L	XL
Effective Toptube	Size S580 mm	Size M605 mm	Size ML630 mm	Size L655 mm	Size XL680 mm
Reach	Size S433 mm	Size M458 mm	Size ML481 mm	Size L506 mm	Size XL528 mm
Stack	Size S589 mm	Size M589 mm	Size ML599 mm	Size L599 mm	Size XL608 mm
Seattube	Size S380 mm	Size M410 mm	Size ML440 mm	Size L470 mm	Size XL500 mm
Chainstay	Size S435 mm	Size M435 mm	Size ML435 mm	Size L435 mm	Size XL435 mm
Head Angle static / sagged	Size S65.5 / 65.4°	Size M65.5 / 65.4°	Size ML65.5 / 65.4°	Size L65.5 / 65.4°	Size XL65.5 / 65.4°
Seat Angle	Size S76°	Size M76°	Size ML76°	Size L76°	Size XL76°
BB Drop static / sagged	Size S10 / 52 mm	Size M10 / 52 mm	Size ML10 / 52 mm	Size L10 / 52 mm	Size XL10 / 52 mm
BB Height static / sagged	Size S340 / 298 mm	Size M340 / 298 mm	Size ML340 / 298 mm	Size L340 / 298 mm	Size XL340 / 298 mm
Wheelbase	Size S1178 mm	Size M1203 mm	Size ML1230 mm	Size L1255 mm	Size XL1282 mm
Headtube	Size S110 mm	Size M110 mm	Size ML120 mm	Size L120 mm	Size XL130 mm
Axle to Crown	Size S542 mm	Size M542 mm	Size ML542 mm	Size L542 mm	Size XL542 mm
Fork offset	Size S42 mm	Size M42 mm	Size ML42 mm	Size L42 mm	Size XL42 mm

Visit Bird Bikes for more information!

Filed under Bikes in January 2019

About the author

Matt is one of the founding Molefathers of the Muddymoles, and is the designer and main administrator of the website.

Having ridden a 2007 Orange Five for many years then a 2016 YT Industries Jeffsy 29er, he now rocks a Bird Aether 9 and a Pace RC-627.

An early On-One Inbred still lurks in the back of the stable as a reminder of how things have moved on. You can even find him on road bikes - currently a 2019 Cannondale Topstone 105 SE, a much-used 2011 Specialized Secteur and very niche belt drive Trek District 1.

If you've ever wondered how we got into mountain biking and how the MuddyMoles started, well wonder no more.