Muddymoles mountain biking in the Surrey Hills and Mole Valley

Bird Zero AM Mk 3 (Boost) specification

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

Bird Zero AM Mk3 (Boost) in Atomic Blue
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
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
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)

Bird Zero AM Mk3 (Boost) geometry

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.

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  1. Related: Race Face Next 35 Carbon Handlebar review - Components, Reviews - Muddymoles - mountain biking in the Surrey Hills and Mole Valley

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