Bicycle Archive · Specification report

2026 Pivot Firebird Expert XT Di2 | MX

Velopedia Archive ID 900001658

Overview

Model year	2026
Brand	Pivot
Model	Firebird Expert XT Di2 \| MX
Bicycle type	Mountain
Archive ID	900001658
Original MSRP	$7,799.00
Colors	Yolo; White Gold
Sizes	SM; MD; LG; XL; XS

Frameset

Frame construction	Firebird — Ultra-light Hollow Core carbon frame
Frame material	Carbon Fiber
Fork	Fox Performance 38 29", 44mm offset, GRIP - 170mm
Rear shock	2025 Fox Factory Float X2

Drivetrain

Component group	Expert XT Di2 \| MX
Shifters	Shimano XT Di2 M8200 ISPEC EV 12-Speed
Rear derailleur	Shimano XT Di2 M8200 SGS 12-Speed
Crankset	Race Face Æffect R 32t
Cassette	Shimano XT M8200 10-51t
Chain	Shimano CN-M8100 12-Speed

Brakes

Brakes	Shimano XT M8220 4-piston; Rotors: Shimano RT-86 6-bolt - 203mm Shimano RT-86 6-bolt- 203mm

Cockpit & contact points

Headset	Pivot Precision Sealed Cartridge
Handlebar	Phoenix Team Carbon - 20mm Rise 760mm(XS), 20mm Rise 780mm(SM), 35mm Rise 780mm(MD-XL)
Stem	Phoenix Team Enduro V2- 32mm(XS), 40mm(SM-LG), 50mm(XL)
Saddle	Phoenix WTB Ride High Tail Trail (XS, SM), Phoenix WTB Ride Volt (Medium Width) (MD-XL)
Seatpost	JD/Pivot YSP23GLS

Wheels & tires

Wheels	DT Swiss M1900 w/ DT Swiss 370 hub, 30mm - Mixed or 29" 15x110 F/12x157 R
Wheel size	29"; 27.5"

Geometry · XS · MX · High

Seat tube	365 mm
Top tube	558 mm
Head tube	85 mm
Head-tube angle	63.8°
Seat-tube angle	77.6°
Chainstay / rear center	430 / 438
Wheelbase	1179 / 1187
Bottom-bracket drop	10 mm
Bottom-bracket height	347 mm
Reach	410 mm
Stack	615 mm
Standover height	678 mm
Wheel size	MX

Geometry · SM · MX · High

Seat tube	385 mm
Top tube	596 mm
Head tube	95 mm
Head-tube angle	63.4°
Seat-tube angle	77°
Chainstay / rear center	430 / 438
Wheelbase	1217 / 1223
Bottom-bracket drop	13 mm
Bottom-bracket height	344 mm
Reach	440 mm
Stack	625 mm
Standover height	682 mm
Wheel size	MX

Geometry · MD · MX · High

Seat tube	415 mm
Top tube	622 mm
Head tube	108 mm
Head-tube angle	63.4°
Seat-tube angle	77°
Chainstay / rear center	432 / 440
Wheelbase	1248 / 1256
Bottom-bracket drop	13 mm
Bottom-bracket height	344 mm
Reach	463 mm
Stack	637 mm
Standover height	687 mm
Wheel size	MX

Geometry · LG · MX · High

Seat tube	440 mm
Top tube	635 mm
Head tube	118 mm
Head-tube angle	63.4°
Seat-tube angle	77°
Chainstay / rear center	434 / 442
Wheelbase	1271 / 1279
Bottom-bracket drop	13 mm
Bottom-bracket height	344 mm
Reach	480 mm
Stack	646 mm
Standover height	708 mm
Wheel size	MX

Geometry · XL · MX · High

Seat tube	475 mm
Top tube	657 mm
Head tube	128 mm
Head-tube angle	63.4°
Seat-tube angle	77°
Chainstay / rear center	437 / 445
Wheelbase	1299 / 1306
Bottom-bracket drop	13 mm
Bottom-bracket height	344 mm
Reach	500 mm
Stack	655 mm
Standover height	712 mm
Wheel size	MX

Geometry · XS · MX · Low

Seat tube	365 mm
Top tube	559 mm
Head tube	85 mm
Head-tube angle	63.4°
Seat-tube angle	76.8°
Chainstay / rear center	431 / 439
Wheelbase	1180 / 1188
Bottom-bracket drop	15 mm
Bottom-bracket height	342 mm
Reach	405 mm
Stack	618 mm
Standover height	675 mm
Wheel size	MX

Geometry · SM · MX · Low

Seat tube	385 mm
Top tube	597 mm
Head tube	95 mm
Head-tube angle	63.1°
Seat-tube angle	76.2°
Chainstay / rear center	431 / 439
Wheelbase	1218 / 1225
Bottom-bracket drop	18 mm
Bottom-bracket height	340 mm
Reach	436 mm
Stack	628 mm
Standover height	677 mm
Wheel size	MX

Geometry · MD · MX · Low

Seat tube	415 mm
Top tube	623 mm
Head tube	108 mm
Head-tube angle	63.1°
Seat-tube angle	76.2°
Chainstay / rear center	433 / 441
Wheelbase	1249 / 1257
Bottom-bracket drop	18 mm
Bottom-bracket height	340 mm
Reach	459 mm
Stack	640 mm
Standover height	681 mm
Wheel size	MX

Geometry · LG · MX · Low

Seat tube	440 mm
Top tube	636 mm
Head tube	118 mm
Head-tube angle	63.1°
Seat-tube angle	76.2°
Chainstay / rear center	435 / 443
Wheelbase	1272 / 1280
Bottom-bracket drop	18 mm
Bottom-bracket height	340 mm
Reach	476 mm
Stack	649 mm
Standover height	703 mm
Wheel size	MX

Geometry · XL · MX · Low

Seat tube	475 mm
Top tube	658 mm
Head tube	128 mm
Head-tube angle	63.1°
Seat-tube angle	76.2°
Chainstay / rear center	438 / 446
Wheelbase	1300 / 1308
Bottom-bracket drop	18 mm
Bottom-bracket height	340 mm
Reach	496 mm
Stack	658 mm
Standover height	708 mm
Wheel size	MX

Geometry · SM · 29" · High

Seat tube	385 mm
Top tube	594 mm
Head tube	95 mm
Head-tube angle	64.2°
Seat-tube angle	77.75°
Chainstay / rear center	430 / 438
Wheelbase	1217 / 1225
Bottom-bracket drop	17 mm
Bottom-bracket height	354 mm
Reach	449 mm
Stack	619 mm
Standover height	692 mm
Wheel size	29"

Geometry · MD · 29" · High

Seat tube	415 mm
Top tube	599 mm
Head tube	108 mm
Head-tube angle	64.2°
Seat-tube angle	77.75°
Chainstay / rear center	432 / 440
Wheelbase	1248 / 1256
Bottom-bracket drop	17 mm
Bottom-bracket height	354 mm
Reach	472 mm
Stack	630 mm
Standover height	697 mm
Wheel size	29"

Geometry · LG · 29" · High

Seat tube	440 mm
Top tube	633 mm
Head tube	118 mm
Head-tube angle	64.2°
Seat-tube angle	77.75°
Chainstay / rear center	434 / 442
Wheelbase	1271 / 1279
Bottom-bracket drop	17 mm
Bottom-bracket height	354 mm
Reach	489 mm
Stack	639 mm
Standover height	719 mm
Wheel size	29"

Geometry · XL · 29" · High

Seat tube	475 mm
Top tube	655 mm
Head tube	128 mm
Head-tube angle	64.2°
Seat-tube angle	77.75°
Chainstay / rear center	437 / 445
Wheelbase	1299 / 1306
Bottom-bracket drop	17 mm
Bottom-bracket height	354 mm
Reach	509 mm
Stack	648 mm
Standover height	720 mm
Wheel size	29"

Geometry · SM · 29" · Low

Seat tube	385 mm
Top tube	595 mm
Head tube	95 mm
Head-tube angle	63.8°
Seat-tube angle	77°
Chainstay / rear center	431 / 439
Wheelbase	1218 / 1226
Bottom-bracket drop	25 mm
Bottom-bracket height	349 mm
Reach	445 mm
Stack	622 mm
Standover height	687 mm
Wheel size	29"

Geometry · MD · 29" · Low

Seat tube	415 mm
Top tube	620 mm
Head tube	108 mm
Head-tube angle	63.8°
Seat-tube angle	77°
Chainstay / rear center	433 / 441
Wheelbase	1249 / 1257
Bottom-bracket drop	25 mm
Bottom-bracket height	349 mm
Reach	468 mm
Stack	633 mm
Standover height	692 mm
Wheel size	29"

Geometry · LG · 29" · Low

Seat tube	440 mm
Top tube	634 mm
Head tube	118 mm
Head-tube angle	63.8°
Seat-tube angle	77°
Chainstay / rear center	435 / 443
Wheelbase	1272 / 1280
Bottom-bracket drop	25 mm
Bottom-bracket height	349 mm
Reach	485 mm
Stack	642 mm
Standover height	713 mm
Wheel size	29"

Geometry · XL · 29" · Low

Seat tube	475 mm
Top tube	656 mm
Head tube	128 mm
Head-tube angle	63.8°
Seat-tube angle	77°
Chainstay / rear center	438 / 446
Wheelbase	1300 / 1307
Bottom-bracket drop	25 mm
Bottom-bracket height	349 mm
Reach	505 mm
Stack	651 mm
Standover height	716 mm
Wheel size	29"

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 21, 2026.