This one goes to 12, plus it shifts using electricity!

SRAM's electric shifting Eagle X01 AXS has a 12 speed cassette with a whopping 500% gear ratio change. The cassette goes from 10-50 teeth.

Component	Standard Component	Upgrade / Option
Fork	Fox Float 34 Performance Series 130mm, 29”, 15QR	Standard Fox Float 34 Factory Series 130mm, 29", 15QR
Shock	Fox Float Performance DPS with EVOL, 190x45	Standard Fox Float Factory DPS with EVOL, 190x45
Wheels	Ibis S35 Aluminum / 29" / Ibis Hubs	Standard Ibis S35 Carbon Rims / 29" / Ibis Logo Hubs Ibis S28 Carbon Rims / 29" / Ibis Logo Hubs Ibis S35 Carbon Rims / 29" / Industry 9 Hydra Hubs Ibis S28 Carbon Rims / 29" / Industry 9 Hydra Hubs
Tires	Schwalbe Nobby Nic 29” x 2.6”	Standard Maxxis Assegai 29” x 2.5” WT, EXO+ casing, 120tpi
Brakes	Shimano XT M8100 2 Piston
Brake Rotors	Shimano SM-RT86 180
Cranks	SRAM X01 Eagle, DUB spindle, 32t Alloy Ring (170mm or 175mm)
Bottom Bracket	SRAM DUB BSA
Rear Derailleur	SRAM X01 Eagle AXS
Shift Levers	SRAM X01 AXS 2 Button Eagle Triggers
Cassette	SRAM XG 1295 EAGLE 10-50T
Chain	SRAM X01 EAGLE Powerlock 12 speed chain
Headset	Cane Creek 40 ZS44/ZS56
Grips	Lizard Skins Charger Evo
Handlebar	Ibis 800mm Carbon (10 or 30mm rise)
Stem	Thomson Elite X4 Stem (40, 50, 60, 70, 80, 90, 100, 110)
Seatpost	SRAM Reverb AXS Dropper (125, 150 or 170mm)
Saddle	WTB Silverado Pro 142mm width	Standard WTB Koda Pro 150mm width

Pricing and specifications subject to change without notice. All prices are listed in US dollars.