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2021 Rocky Mountain Altitude Carbon 99

Launched at $9,999Lists today at $10,449 (2026-09)

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What a used one is worth

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New

$5,587

$3,608 to $6,732

Like new

$5,308

$3,428 to $6,395

Excellent

$5,029

$3,247 to $6,059

Good

$4,190

$2,706 to $5,049

Fair

$3,073

$1,985 to $3,702

For parts

$1,676

$1,082 to $2,020

From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.

Overview

Brand: Rocky Mountain
Model family: Altitude
Model year: 2021
Category: Mountain · enduro
Frame material: carbon
Sizes: S, M, L, XL
Wheel size: 27.5 or 29
Wheel setup: either
Launch MSRP (US): $9,999
Current list price: $10,449 (as of 2026-09)

Drivetrain

Speeds: 12
Groupset: SRAM X01 Eagle AXS
Electronic: true

Build

Fork: RockShox Lyrik Ultimate RC2 170mm | 27.5 = 37mm Offset | 29 = 42mm Offset
Stem: Race Face Turbine R | 0° Rise | All Sizes = 40mm
Tires: F: Maxxis Assegai 2.5 WT 3C MaxxGrip EXO+ Tubeless Ready // R: Maxxis Minion DHR II 2.4 WT 3C MaxxTerra EXO+ Tubeless Ready
Brakes: Sram Code RSC 4 Piston | Metal Pads | Centerline 200mm F Rotor | Centerline 180mm R Rotor
Saddle: WTB Volt Team | Titanium Rails | 142mm Width
Wheels: Race Face Next R 31 Carbon Wheelset | Tubeless Ready - Tape | Valves Incl | 28H rims; hubs: Race Face Vault Boost 15mm / Race Face Vault Boost 148mm | RMB Axle | 163mm x 12mm x 1.5mm
Cassette: Sram XG-1295 10-52T
Crankset: Sram X01 Carbon Eagle | 27.5 = 34T | 29 = 32T | 3mm Offset Chainring | 28.99mm Spindle | 170mm Crank length
Seatpost: Rock Shox Reverb AXS Wireless Post | SM = 125mm | MD = 150mm | LG - XL = 170mm
Shifters: Sram Eagle AXS
Handlebar: Race Face Next R | 780mm Width | 20mm Rise | 8° Backsweep | 4° Upsweep | 35mm Clamp
Weight kg: 13.44
Rear shock: RockShox Super Deluxe Ultimate | Sealed Bearing Eyelet | 25x8mm F Hardware | SM = 210x55mm | MD - LG - XL = 230x60mm | Size-Specific tune in FAQ
Travel rear mm: 160
Rear derailleur: Sram X01 Eagle AXS Wireless
Travel front mm: 170

Geometry

L 29: Reach mm: 480; Stack mm: 634; Wheelbase mm: 1249; Head angle deg: 65; Seat angle deg: 76
M 29: Reach mm: 455; Stack mm: 620; Wheelbase mm: 1217; Head angle deg: 65; Seat angle deg: 76
XL 29: Reach mm: 510; Stack mm: 647; Wheelbase mm: 1285; Head angle deg: 65; Seat angle deg: 76
M 27.5: Reach mm: 455; Stack mm: 606; Wheelbase mm: 1199; Head angle deg: 65; Seat angle deg: 76
S 27.5: Reach mm: 430; Stack mm: 596; Wheelbase mm: 1171; Head angle deg: 65; Seat angle deg: 76

Launch price read from Rocky Mountain's US model-year page captured 2020-09 (inside the model year). list_price_usd is the later price Rocky Mountain's archive page shows today. Geometry is the Neutral position of the adjustable geometry chip. Geometry keys carry the wheel size.

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