Pivot Cycles Firebird 29 Pro SRAM X0 Eagle – Air

Size: M


The Firebird 29 Pro X0 Eagle Transmission – Air is built for enduro racing, combining Pivot Cycles’ extremely light Hollow Core carbon frame with a wonderfully plush Fox Factory dw-linkTM suspension inspired by Pivot’s premiere downhill bike, the Phoenix. It offers 165mm of rear travel and an impressive 170mm of front travel.

The DH-inspired long dw-linkTM maximises the rearward wheel path with 165mm of travel to give impressive levels of handling on the descents, yet still enables it to climb efficiently if uplifts aren’t an option.

The progressive geometry of this bike, with its relaxed head angle, long reach and equally long wheelbase, promotes stability with sharp responsiveness to inspire confidence at high speeds. Since the build is tailored to match different sizes of rider, for example by adjusting the length of the chainstays, the same performance will be delivered, regardless of your height.

The bike benefits from SRAM’s X0 Eagle Transmission wireless drivetrain, which can be fully set up in minutes via an app, without the need for adjustment screws or tuning post-setup. It eliminates the derailleur hanger and mounts straight onto the frame via the axle. Rather than being shielded by the hanger, the derailleur includes a mechanism called the ‘Overlord Clutch’, which moves it inboard and out of harm’s way on impact.

No hanger means less chance of failures and allows the cassette to move 2.5mm outboard for a 55mm chainline. This is turn means the crank is optimised for Boost and Super Boost, without the need for a wider Q factor.

The cassette features graduated cog progression, with minimal difference from the 52t cog to the next two, which are sized at 44t and 38t respectively. Shifting is therefore smooth, making changing gear on steeper terrain easier. As well, shifting is possible under loaded conditions, so the harder you pedal, the better your bike will shift.

The chainring has been beefed up in this drivetrain, while the aluminium crankset is billed as SRAM’s most advanced yet, with an exceptional stiffness to weight ratio. Meanwhile, the strong Flattop T-Type chain promotes superior shifting performance and low wear.

The shifter has exemplary adjustability and ergonomics, plus it can be mounted on the left or right, depending on which hand you prefer to use when shifting. You’ll be able to accelerate with confidence, too, knowing that the SRAM Code Silver Stealth four-piston calliper brakes will give you ample braking power when needed.

The Firebird is made to work with 29” wheels, but the flip chip will allow you to effortlessly adjust the frame geometry for different conditions or to accommodate 27.5” wheels or a mixed setup. The default is a low bottom bracket setting, which will optimise your control on fast, steep terrain and make room for wider tyres.

Flipping the chip raises the bottom bracket to accommodate a mixed wheelset, while inserting the 17mm extended headset cup achieves a perfect fit for 27.5” wheels. The head angle is steepened too, and together these adjustments encourage better cornering at speed and more efficient climbing.

This model uses the light alloy 30mm-29" DT Swiss XM1700 wheelset with DT Swiss 350 hub and 36t ratchet for rapid engagement. An all-rounder, it lives up to that claim, thanks to rims with a concentration of material only where needed for durability, a ratchet system with sloping teeth for minimum drag and instant engagement, and sturdy hubs and quality spoking that enhance the ride feel.

Benefiting from Super Boost Plus 157 spacing, originally pioneered by Pivot, enables the Firebird to use short chainstays, which are great for tight cornering, tyre clearance and a stiff rear swingarm. The Boost standard furthermore moves the drivetrain out 6mm, promoting better tyre clearance and mud shedding capabilities.

All these elements add up to a bike that handles superbly and manages to be both light and durable. It’s therefore possible to throw it around the singletrack with precision and confidence that the relaxed head angle, long reach and wheelbase will keep the bike stable at speed.

Key features:
  • The perfect enduro machine, every element of this bike is tuned for speed
  • Features aggressive geometry for the perfect blend of speed, responsiveness and stability
  • Built around Pivot’s expertly moulded carbon fibre Firebird frame
  • Compatible with both 29” and 27.5” wheels, thanks to the adjustable geometry via the flip chip upper link mount
  • dw-linkTM suspension to maximise rearward wheel path, for control and a smooth ride
  • 5” headtube provides front end stiffness
  • Full length, internal cable routing
  • The corrosion-resistant, Kashima coated Fox Factory Float X2 air shock offers 165mm of rear travel
  • Kashima coated, corrosion-resistant Fox Factory 38 GRIP2 fork, 44mm offset, giving 170mm of travel
  • Light, durable alloy DT Swiss XM1700 wheelset with DT Swiss 350 hub and 36t Star, 30mm-29", with a great weight to strength balance, 15x110 F/12x157 R
  • Maxxis Assegai 29" x 2.5" WT tyres
  • SRAM X0 Eagle Transmission 12-Speed Rear Derailleur
  • SRAM X0 1295 Eagle Transmission 10-52t cassette
  • SRAM AXS Pod Controller 12-Speed shifter
  • SRAM Code Silver Stealth 4-piston calliper
  • SRAM X0 Eagle DUB 32t crankset, aluminium
  • Phoenix Team Low Rise Carbon 800mm handlebar
  • Pivot Cycles’ Phoenix Team Enduro/Trail stem
  • Fox Transfer Factory Series seatpost
  • Phoenix WTB Volt Pro saddle


KIT Pro X0 Eagle Transmission - Air
FRAME Firebird
REAR SHOCK Fox Factory Float X2
FORK Fox Factory 38 29", 44mm offset, GRIP2 - 170mm
HEADSET Pivot Precision Sealed Cartridge
REAR DER Sram X0 Eagle Transmission 12-Speed
CASSETTE Sram X0 1295 Eagle Transmission 10-52t
SHIFTER Sram AXS Pod Controller
BRAKES Sram Code RSC 4-piston
CRANKSET Sram X0 Eagle DUB 32t
HANDLEBAR One Up Low Rise Carbon - 800mm
GRIPS Phoenix Factory Lock-On
STEM Phoenix Team Enduro/Trail
SEATPOST Fox Transfer Factory Series 150mm (SM), 175mm (MD-LG), 200mm (XL)
SADDLE Phoenix WTB Volt Pro (Medium Width)
WHEELS DT Swiss XM1700 w/ DT Swiss 350 hub & 36t Star Ratchet 30mm - 29"
15x110 F/12x157 R
TIRES Maxxis Assegai 29" x 2.5" WT, TR, 3C, EXO+, MAXXTERRA
Maxxis Assegai 29" x 2.5" WT, TR, 3C, EXO+, MAXXTERRA
ROTOR Sram Centerline Centerlock - 200mm
Sram Centerline Centerlock - 200mm
CHAIN Sram X0 Eagle Transmission Flattop 12-Speed


Graphics, colors, and specifications are subject to change without prior notification.



A bike for every size
Geometry and sizing

High BB

A Seat Tube Length (C-T) 37.5 cm 41 cm 44 cm 47 cm
B Top Tube Length 59.7 cm 62.3 cm 64 cm 66.4 cm
C Head Tube Length 9.5 cm 10.8 cm 11.8 cm 12.8 cm
D Head Tube Angle 64.6° 64.6° 64.6° 64.6°
E Seat Tube Angle (Eff.) 76.5° 77.0° 77.5° 77.5°
F Chainstay Length 43 cm 43.3 cm 43.7 cm 44.4 cm
G Bottom Bracket Height 35.6 cm 35.6 cm 35.6 cm 35.6 cm
H Bottom Bracket Drop 1.42 cm 1.42 cm 1.42 cm 1.42 cm
I Standover 66.7 cm 67.8 cm 69.9 cm 70.9 cm
Wheelbase 120.6 cm 123.7 cm 126.6 cm 129.9 cm
Reach 45 cm 47.3 cm 49.3 cm 51.5 cm
Stack 61.2 cm 62.4 cm 63.3 cm 64.2 cm


Low BB

A Seat Tube Length (C-T) 37.5 cm 41 cm 44 cm 47 cm
B Top Tube Length 59.8 cm 62.4 cm 64.1 cm 66.5 cm
C Head Tube Length 9.5 cm 10.8 cm 11.8 cm 12.8 cm
D Head Tube Angle 64.0° 64.0° 64.0° 64.0°
E Seat Tube Angle (Eff.) 76.0° 76.5° 77.0° 77.0°
F Chainstay Length 43.1 cm 43.4 cm 43.8 cm 44.5 cm
G Bottom Bracket Height 35 cm 35 cm 35 cm 35 cm
H Bottom Bracket Drop 2 cm 2 cm 2 cm 2 cm
I Standover 66.2 cm 67.2 cm 69.3 cm 70.4 cm
Wheelbase 120.7 cm 123.9 cm 126.7 cm 130 cm
Reach 44.5 cm 46.8 cm 48.8 cm 51 cm
Stack 61.5 cm 62.7 cm 63.6 cm 64.5 cm
Size: M

Product information