Bicycle Archive · Specification report

2026 Ibis Oso HD 90

Velopedia Archive ID 900000523

Overview

Model year	2026
Brand	Ibis
Model	Oso HD 90
Bicycle type	Electric-assist
Archive ID	900000523
Original MSRP	$8,999.00
Colors	Kodiak Gold
Sizes	S / M / XM / L / XL

Frameset

Frame construction	Carbon Fiber
Frame material	Carbon Fiber
Fork	Fox Factory 38, Grip X2, 180mm, 29”
Rear shock	Fox Factory Float X2, 230x65mm

Drivetrain

Shifters	SRAM Eagle 90 Transmission
Rear derailleur	SRAM Eagle 90 Transmission
Crankset	SRAMSM-MD: SRAM 90, 155mm, 34T Steel Ring XM-XL: SRAM EX1, 165mm, 34T Steel Ring
Cassette	SRAM XS 1275 Transmission, T-Type, 10-52T
Chain	SRAM GX Eagle Transmission, T-Type

Brakes

Brakes	SRAM Maven, Silver; Rotors: SRAM Centerline 220mm, 6-Bolt

Cockpit & contact points

Headset	Cane Creek 50, ZS56/ZS56
Handlebar	Blackbird 35 Aluminum Riser Bar 800mm
Stem	BLKBRD StemSM-MD: 35mm, XM-XL: 50mm
Saddle	WTB Silverado Fusion CrMo 142
Seatpost	KS Vantage Dropper, 34.9mmSM–MD: 140–170mmXM–XL: 180–210mm

Wheels & tires

Wheels	Blackbird Send Alloy, 32H, Blackbird HubsSM-XM, F: Send I, 29 / R: Send II, 27.5LG-XL, F: Send I, 29 / R: Send II, 29
Front tire	Maxxis Assegai, DD, MaxxGrip, 29x2.5
Rear tire	Maxxis DHR2, DD, MaxxTerraSM-XM: 27.5x2.5LG-XL: 29x2.5
Wheel size	Size LG–XL: 29” wheels Size SM–XM: MX wheels (MX or 29” option in all sizes via modular dropout system)

Geometry · SM

Seat tube	381 mm
Top tube	583 mm
Head tube	99 mm
Head-tube angle	62.3°
Seat-tube angle	76.1°
Chainstay / rear center	440 mm
Wheelbase	1233 mm
Bottom-bracket drop	27 mm
Bottom-bracket height	346 mm
Reach	428 mm
Stack	626 mm
Standover height	706 mm
Crank length	160 mm
Wheel size	27.5

Geometry · MD

Seat tube	381 mm
Top tube	608 mm
Head tube	109 mm
Head-tube angle	63.1°
Seat-tube angle	76.1°
Chainstay / rear center	440 mm
Wheelbase	1251 mm
Bottom-bracket drop	24 mm
Bottom-bracket height	349 mm
Reach	450 mm
Stack	637 mm
Standover height	717 mm
Crank length	160 mm
Wheel size	27.5

Geometry · XM

Seat tube	405 mm
Top tube	628 mm
Head tube	121 mm
Head-tube angle	63.1°
Seat-tube angle	76.6°
Chainstay / rear center	455 mm
Wheelbase	1295 mm
Bottom-bracket drop	21 mm
Bottom-bracket height	352 mm
Reach	474 mm
Stack	646 mm
Standover height	745 mm
Crank length	160 mm
Wheel size	27.5

Geometry · LG

Seat tube	432 mm
Top tube	648 mm
Head tube	136 mm
Head-tube angle	63.1°
Seat-tube angle	77.1°
Chainstay / rear center	455 mm
Wheelbase	1325 mm
Bottom-bracket drop	18 mm
Bottom-bracket height	355 mm
Reach	498 mm
Stack	656 mm
Standover height	755 mm
Crank length	160 mm
Wheel size	29

Geometry · XL

Seat tube	450 mm
Top tube	668 mm
Head tube	152 mm
Head-tube angle	63.1°
Seat-tube angle	77.6°
Chainstay / rear center	455 mm
Wheelbase	1357 mm
Bottom-bracket drop	15 mm
Bottom-bracket height	358 mm
Reach	522 mm
Stack	668 mm
Standover height	771 mm
Crank length	160 mm
Wheel size	29

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on August 26, 2026.