MountainPartial spec

2025 Rocky Mountain Altitude Carbon 99

Lists today at $11,499 (2026-09)

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What a used one is worth

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New

$8,969

$6,324 to $10,349

Like new

$8,521

$6,008 to $9,832

Excellent

$8,072

$5,692 to $9,314

Good

$6,727

$4,743 to $7,762

Fair

$4,933

$3,478 to $5,692

For parts

$2,691

$1,897 to $3,105

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: 2025
Category: Mountain · enduro
Frame material: carbon
Sizes: S, M, L, XL
Wheel size: 29, 27.5 (S)
Wheel setup: by frame size
Current list price: $11,499 (as of 2026-09)

Drivetrain

Speeds: 12
Groupset: SRAM XX Eagle Transmission Wireless
Electronic: true

Build

Fork: RockShox Zeb Ultimate Flight Attendant 170mm | 27.5 = 38mm Offset | 29 = 44mm Offset
Stem: Race Face Turbine R | 0° Rise | All Sizes = 40mm
Tires: Maxxis Assegai 2.5 WT 3C MaxxGrip EXO+ Tubeless Ready | Maxxis Minion DHR II 2.4 WT 3C MaxxTerra DD Tubeless Ready | Cushcore Trail Tire Inserts | Lightweight | Tire & Rim Protection
Brakes: Sram Maven Ultimate Stealth 4 Piston | Metal Pads
Saddle: WTB Volt Fusion Form 142 | Titanium Rails
Cassette: Sram XX Eagle Transmission 10-52T
Crankset: Sram XX Transmission Carbon | 32T | Power Meter | DUB Spindle | Crankarm Length: SM = 165mm | MD - XL = 170mm
Seatpost: Rock Shox Reverb AXS Wireless Post | SM = 150mm | MD - XL = 170mm
Shifters: Sram AXS Pod Ultimate Controller
Handlebar: Race Face ERA | 780mm Width | 40mm Rise | 8° Backsweep | 5° Upsweep | 35mm Clamp
Rear shock: RockShox Super Deluxe Ultimate Flight Attendant HBO MD - LG - XL = 230x60mm | RockShox Vivid Air Ultimate Flight Attendant HBO SM = 210x55mm | Sealed Bearing Eyelet | 40x10mm F Hardware | Size-Specific tune in FAQ
Travel rear mm: 160
Rear derailleur: Sram XX Eagle Transmission Wireless
Travel front mm: 170

Geometry

L 29: Reach mm: 475; Stack mm: 639; Chainstay mm: 450; Wheelbase mm: 1283; Head angle deg: 63; Seat angle deg: 77
M 29: Reach mm: 450; Stack mm: 630; Chainstay mm: 440; Wheelbase mm: 1244; Head angle deg: 63; Seat angle deg: 77
XL 29: Reach mm: 505; Stack mm: 653; Chainstay mm: 450; Wheelbase mm: 1319; Head angle deg: 63; Seat angle deg: 77
S 27.5: Reach mm: 424; Stack mm: 599; Chainstay mm: 430; Wheelbase mm: 1189; Head angle deg: 63; Seat angle deg: 77

Colors: BLUE/WHITE/GREY. Geometry is the POS.1 Slack position of the adjustable geometry chip. Geometry keys carry the wheel size (MX = mixed 29/27.5). Wheel size depends on the chosen option or frame size.

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