Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Frame geometry
2021 Rocky Mountain Altitude Carbon 99 has 9 mm more reach than 2025 Rocky Mountain Altitude Carbon 99 in the selected sizes.
More reach puts the head-tube reference farther forward, not necessarily the hands.
- Handling
2025 Rocky Mountain Altitude Carbon 99 has a 2.4° slacker head-tube angle than 2021 Rocky Mountain Altitude Carbon 99 in the selected sizes.
Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.
- Identity & price
2021 Rocky Mountain Altitude Carbon 99 had an archived price $1,050 lower than 2025 Rocky Mountain Altitude Carbon 99.
Archived price is the amount preserved with the source record. It may be a list or sale price; it is not a current offer or used-bike valuation.
Selected-size geometry
Geometry overlay
Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.62:1Highest3.20:1Total range520%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 2.4″ + 29-inch.
Lowest0.62:1Highest3.20:1Total range520%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 2.4″ + 29-inch.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Specification
2021 Rocky Mountain Altitude Carbon 99
2025 Rocky Mountain Altitude Carbon 99
Overview
Model Year
2021
2025
Brand
Rocky Mountain
Rocky Mountain
Model
Altitude Carbon 99
Altitude Carbon 99
Bicycle Type
Mountain
Mountain
Archived price
$10,449.00
$11,499.00
Colors
Purple/Black
Blue/White/Grey
Sizes
S, M, L, XL
S, M, L, XL
Weight
29.568 LBS|13.44 KGS
—
Frameset
Frame Construction
SMOOTHWALL™ Carbon. Full Sealed Cartridge Bearings. Press Fit BB. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9™ Adjustable Geometry. 2 Position Axle. 160mm Travel. SMOOTHWALL™ Carbon Rear Triangle
SMOOTHWALL™ Carbon | Penalty Box 2.0 Storage |Full Sealed Cartridge Bearings | Threaded BB | Internal Cable Routing | 2-Bolt ISCG05 Tabs | RIDE-4™ Adjustable Geometry | 160mm Travel | SMOOTHWALL™ Carbon Rear Triangle
Frame Material
Carbon Fiber
Carbon Fiber
Fork
RockShox Lyrik Ultimate RC2 170mm | 27.5 = 37mm Offset | 29 = 42mm Offset
RockShox Zeb Ultimate Flight Attendant 170mm | 27.5 = 38mm Offset | 29 = 44mm Offset
Rear Shock
RockShox Super Deluxe Ultimate | Sealed Bearing Eyelet | SM = 210x55mm | MD - LG - XL = 230x60mm
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
Drivetrain
Shifters
Sram Eagle AXS
Sram AXS Pod Ultimate Controller
Rear Derailleur
Sram X01 Eagle AXS Wireless
Sram XX Eagle Transmission Wireless
Crankset
Sram X01 Carbon Eagle | 27.5 = 34T | 29 = 32T
Sram XX Transmission Carbon | 32T | Power Meter | DUB Spindle | Crankarm Length: SM = 165mm | MD - XL = 170mm
Bottom Bracket
Sram BB92 DUB
Sram DUB BSA 73 Wide
Cassette
Sram XG-1295 10-52T
Sram XX Eagle Transmission 10-52T
Chain
Sram XX1 Eagle
Sram XX Transmission
Brakes
Brakes
Sram Code RSC 4 Piston
Sram Maven Ultimate Stealth 4 Piston | Metal Pads
Cockpit & Contact Points
Headset
Cane Creek Hellbender 70
FSA Orbit NO.85 Reach Adjust | 0mm Cups Installed | +/- 5mm Cups Included | Sealed Stainless 36°x45° Bearings | 30.2mm x 41mm x 6.5mm Upper | 40mm x 51.8mm x 8.0mm Lower | 1.5" Crown Race
Handlebar
Race Face Next R 780mm
Race Face ERA | 780mm Width | 40mm Rise | 8° Backsweep | 5° Upsweep | 35mm Clamp
Stem
Race Face Turbine R | 40mm
Race Face Turbine R | 0° Rise | All Sizes = 40mm
Saddle
WTB Volt Team 142 | Titanium Rails
WTB Volt Fusion Form 142 | Titanium Rails
Seatpost
Rock Shox Reverb AXS Wireless Post | SM = 125mm | MD = 150mm | LG - XL = 170mm
Rock Shox Reverb AXS Wireless Post | SM = 150mm | MD - XL = 170mm
Wheels & Tires
Front Tire
Maxxis Assegai 2.5 WT 3C MaxxGrip EXO+ Tubeless Ready
Maxxis Assegai 2.5 WT 3C MaxxGrip EXO+ Tubeless Ready
Rear Tire
Maxxis Minion DHR II 2.4 WT 3C MaxxTerra EXO+ Tubeless Ready
Maxxis Minion DHR II 2.4 WT 3C MaxxTerra DD Tubeless Ready
Wheel Size
29"; 27.5"
SM: 27.5″; MD/LG/XL: 29″
Geometry · choose a size for each bicycle
Geometry size
Reach
484 mm
475 mm
Stack
631 mm
639 mm
Effective top tube
637 mm
610 mm
Head-tube angle
65.4°
63°
Seat-tube angle
76.4°
77°
Seat tube
445 mm
440 mm
Head tube
110 mm
115 mm
Chainstay / rear center
436 - 447
450 mm
Wheelbase
1248 mm
1283 mm
Bottom-bracket drop
22 mm
38 mm
Standover height
818 mm
798 mm
Wheel size
29
29
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.