2019 Pivot Firebird 29 Pro X01 Bike

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2019 Pivot Firebird 29 (Sandstorm)
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Amazing "Enduro"/ Gravity focused but not DH bike

Rating: Featured Member Review
The Good:

- Devours just about anything when pointed downhill - Pedals stupid well for 162mm rear + 29er wheels - Never felt any bottom outs even though the X2 oring said it definitely did. - Don't feel "on top" of the bike like a lot of other 29ers

The Bad:

- Climbing performance on technical climbs hampered by the head angle - Slow speed switch backs take more tire sliding and body english - Stock disc spec is too small in diameter for this style of bike

Overall Review:

This is only after a few days on a demo, also the bike I rode had Cushcore installed on the rear, but didn't ride a lower pressure than normal (low 20's).

Rides included:

  • Grubstake Loop inApex Park
  • Lift riding at Trestle Bike Park
  • Morrison Slide loop in Red Rocks

    I weight 160 and 5'11" tall, I rode a large. It felt like the perfect size.

First off this is the first 29er I've gotten on and loved. Having the carbon wheels on it takes away the acceleration lag from super low speeds that is just a part of having larger wheels. I'd be interested to see if having aluminum rims would really change my perception of the bike but having the CushCore insert in there probably brought it a little closer to alum. rim weight.

I've done a lot of bike demos the last month and a half (5) and it's interesting to me how some bikes have upper speed limits (Stumpjumper 29) and some bikes have a lower speed limit before they feel good (Bronson, and full on DH like my Intense M9). On both the Pivot 5.5 and Firebird 29 they felt amazing from creeping down sketchy low speed rocky technical lines to 30+ mph trails. If you find the upper end of the Firebird's speed limit you probably have the suspension set up wrong, or you're a WC racer. Another thing that blew me away is how playful the Firebird felt in comparison to the 5.5 (27.5" @140mm rear) and only a hair less than a Yeti SB5 (27.5" @127mm rear). This is super important to me as I'm definitely not a top speed guy, but if there is any little bump or trail cutting jump I'll take it and play on it. I was expecting this thing to just be a plow but it's SO much more than that. My favorite tech jib of nose tapping box jumps is a breeze on this thing, which scared me on the 29 Stumpy. 

I've long been a fan of DW link bikes and most short linkage parallel rotating suspension designs with air shocks (marin wolf ridge and quake). The mixture of small bump compliance + progression + climbing performance has always won me over. The Firebird 29 is no different. Lines that I had rode the weekend before on my M9 I didn't feel, much if anything at all, slower with 40mm less travel in the rear.


Things I'm not stoked on
The climbing performance on technical punchy stuff is definitely hampered by the head angle, you have to be really careful to put enough weight forward to stop the wheel from getting knocked around but not so much that you unweight your rear wheel. But if you're really worried about clearing low percentile tech climbs you're not looking at Enduro bikes... The wheelbase + HA also makes super tight switchbacks a bit more involved, but I don't know if it'd trade anything for that being better. More of just a spec quibble, but I think the front wheel deserves a 203mm rotor. Right now it really doesn't have the power to come into a corner super hot and slow way down. This IS a bike that is designed to win EWS races...plus having the extra leverage of a 29" wheel just makes it harder to stop fast with 180. 

Overall

If I didn't already own a dedicated downhill bike I'd really, really, really want one of these to compliment my 5.5. If you are somewhere where you value downhill performance and don't have super technical climbs you could definitely rock this as your only trail bike and hit bike parks no problem.  

Specifications

Product Pivot Firebird 29 Pro X01 Bike
Model Year 2019
Riding Type Enduro / All-Mountain, Freeride / Bike Park
Rider Unisex
Sizes and Geometry
S (Low, High), M (Low, High), L (Low, High), XL (Low, High) View Geometry
Size S (Low, High) M (Low, High) L (Low, High) XL (Low, High)
Top Tube Length 594.4mm, 594.4mm 624.8mm, 624.8mm 647.7mm, 645.2mm 670.6mm, 668mm
Head Tube Angle 65°, 65.5° 65° , 65.5° 65° , 65.5° 65° , 65.5°
Head Tube Length 95mm 104.9mm 115.1mm 125mm
Seat Tube Angle 74.5°, 75° 74.5°, 75° 74.5°, 75° 74.5°, 75°
Seat Tube Length 393.7mm 424.2mm 457.2mm 495.3mm
Bottom Bracket Height 348mm, 353.8mm 348mm, 353.8mm 348mm, 353.8mm 348mm, 353.8mm
Chainstay Length 431mm, 429mm 431mm, 429mm 431mm, 429mm 431mm, 429mm
Wheelbase 1186.2mm, 1186.2mm 1216.7mm, 1216.7mm 1242.1mm, 1239.5mm 1264.9mm, 1264.9mm
Standover 683.3mm, 689.4mm 689.1mm, 695.5mm 702.8mm, 708.9mm 713mm, 719.1mm
Reach 429.3mm, 431.8mm 454.7mm, 459.7mm 475mm, 480.1mm 495.3mm, 500.4mm
Stack 604.5mm, 599.4mm 612.1mm, 609.6mm 622.3mm, 617.2mm 632.5mm, 627.4mm
* Additional Info Adjustable geometry with a flip-chip upper link mount and lower headset cup.
Low geometry values for 29" with low BB setting or 27.5+ with high BB setting and 17mm cup.
Wheel Size 29", 27.5+
Frame Material Carbon Fiber
Frame Material Details Ultra-light full carbon frame featuring hollow-core, high-compression carbon molding with full-length internal cable routing
Rear Travel 162mm
Rear Shock FOX Performance Float X2 (metric)
Fork FOX Factory 36 Grip 2, 44mm offset
Fork Travel 170mm
Head Tube Diameter Zero stack 49.6mm top, zero stack 56mm bottom (also accepts a standard 1.5 external top cup)
Headset Pivot Precision Sealed Cartridge
Handlebar Phoenix Team Carbon, 800mm
Stem Phoenix Team Enduro, 35mm diameter clamp, 45mm length
Grips Phoenix Team Padloc
Brakes Shimano XT M8020 4 piston
Brake Levers Shimano XT
Drivetrain 1x
Shifters SRAM X01 Eagle 12-speed
Front Derailleur N/A
Rear Derailleur SRAM X01 Eagle 12-speed
ISCG Tabs ISCG05
Chainguide Top guide
Cranks SRAM X01 Eagle DUB with OneUp SB+ Switch Spider, 170mm
Chainrings 32 tooth
Bottom Bracket Pressfit BB92
Pedals N/A
Chain
Cassette SRAM X01 Eagle, 10-50 tooth, 12-speed
Rims DT Swiss 29 M1700 wheels, 30mm width
Upgrade Option: Reynolds Blacklabel Enduro 29 wheels, 34mm rim width
Hubs DT Swiss 350, 36 tooth star ratchet upgrade
Upgrade Option: Reynolds Blacklabel Enduro 29 wheels with Industry Nine hubs
Spokes DT competition straightpull, 28 front and rear
Tires Front: Maxxis Minion DHF WT 29" x 2.5" TR/3C/EXO/ MAXXTERRA
Rear: Maxxis Minion DHRII WT 29" x 2.4" TR/3C/EXO/ MAXXTERRA
Saddle Hightail Trail Pro
Seatpost Small: KS LEV Integra, 125mm
Medium: KS LEV Integra, 150mm
Large and XL: FOX Transfer, 150mm
Seatpost Diameter
Seatpost Clamp Standard single bolt
Rear Dropout / Hub Dimensions 12 x 157mm Super Boost Plus
Max. Tire Size 29"x2.6" or 27.5"x2.8"
Bottle Cage Mounts Yes, under the base of the downtube
Colors Steel Blue, Sandstorm
Warranty 10-year warranty
Weight N/A
Miscellaneous Dw-link suspension
Long-and-low geometry for a confident, stable stance
Short, 431mm (16.96") chainstays
Compatible with both 29 and 27.5+ wheel sizes with adjustable geometry
Fits riders between 5'4" and 6'7"
1x drivetrain compatible, no front derailleur mounts
Metric shock size: 230mm eye-to-eye length, 65mm stroke, M8 through bolt hardware
Coil-over shocks not recommended
Frame weight (with shock): 7 lbs (3.2kg)
Complete bikes as light as 29.7 lbs (13.5kg)
Upgrade Pro models to FOX Float X2 Factory shock: + $125
Upgrade Pro models to Reynolds carbon wheels: + $1,300
Price $7,499
More Info

www.pivotcycles.com

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