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Bird Zero AM Mk 3 (Boost) specification

Posted by Matt | February 26, 2019 | 1 comment so far

The original spec of my Bird Zero AM after building it up from a frame and transferring brand new bits off a 2018 Pinnacle Iroko 2.

Not all the parts are as I would wish them to be but overall this was a cost-effective way to build the bike when my employer restricts Ride2Work purchases to Evans Cycles only!

You can read more about the Bird Zero AM (Boost) on the Bird Bikes website. The Pinnacle Iroko 2 can be seen on the Evans Cycles website.

Bird Zero AM Mk 3 (Boost)

Colour	Atomic blue with orange highlights
Frame	Zero AM Boost (Mk3) 6061-T6 aluminium frame 12x148mm bolt thru axle, clearance for 27.5×2.6 tyres, ISCG05 chainguide mount, full continuous external cable routing
Fork	RockShox Revelation RC 27.5″, 15x110mm Boost, 150mm travel, Thru axle, DebonAir air spring, Motion Control RC damper cartridge, Low-speed compression adjustment to firm, Tapered steerer
Rims	WTB ST i25 TCS 27.5″ 32H, tubeless ready
Hubs	Novatec sealed bearing FW 15x110mm Thru Axle, RW 12x148mm Thru Axle
Shifter	SRAM GX 11 speed 1×11 speed
Rear derailleur	Sram GX1 11 speed, long cage
Cassette	Sram XG 1150 11 speed 10-42
Chain	KMC X11
Chainset	Sram GX 1000 175mm 30T Xsync chainring, 52/49mm chainline
Bottom Bracket	Sram GXP XR BSA, 73mm
Brakes	Sram Level TL 2 piston, tooled reach adjust, steel-backed organic pad
Discs	SRAM 180mm front/160mm rear
Seatpost	Pinnacle aluminium 400mm x 27.2mm with shim, 31.6 internal, 34.8mm diameter clamp
Saddle	WTB Volt Comp Steel rails, 282mm x 142mm
Headset	Bird ZS44;28.6 \| ZS56;40 Orange
Stem	Race Face Aeffect 50mm, 35mm clamp
Handlebar	Race Face Next 35 Carbon 760mm, 20mm rise, 8° backsweep, 35mm clamp
Grips	Ergon GA3 in Orange
Tyres	WTB FW Vigilante TCS Light/Fast Rolling 27.5×2.3, RW Vigilante TCS Light/Fast Rolling 27.5×2.3

Bird Zero AM Mk 3 (Boost) geometry chart (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 S425 mm	Size M450 mm	Size ML472 mm	Size L497 mm	Size XL519 mm
Stack	Size S615 mm	Size M615 mm	Size ML624 mm	Size L624 mm	Size XL633 mm
Seattube	Size S380 mm	Size M410 mm	Size ML440 mm	Size L470 mm	Size XL500 mm
Chainstay	Size S420 mm	Size M420 mm	Size ML420 mm	Size L425 mm	Size XL425 mm
Head Angle static / sagged	Size S64.5 / 66.5°	Size M64.5 / 66.5°	Size ML64.5 / 66.5°	Size L64.5 / 66.5°	Size XL64.5 / 66.5°
Seat Angle	Size S76°	Size M76°	Size ML76°	Size L76°	Size XL76°
BB Drop static / sagged	Size S45 / 59 mm	Size M45 / 59 mm	Size ML45 / 59 mm	Size L45 / 59 mm	Size XL45 / 59 mm
BB Height static / sagged	Size S305 / 291 mm	Size M305 / 291 mm	Size ML305 / 291 mm	Size L305 / 291 mm	Size XL305 / 291 mm
Wheelbase	Size S1150 mm	Size M1175 mm	Size ML1201 mm	Size L1226 mm	Size XL1253 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 S46 mm	Size M46 mm	Size ML46 mm	Size L46 mm	Size XL46 mm

Filed under Bikes in February 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.