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
2023 Rocky Mountain Altitude Carbon 70 has 26 mm more reach than 2021 Rocky Mountain Altitude Carbon 70 in the selected sizes.
More reach puts the head-tube reference farther forward, not necessarily the hands.
- Frame geometry
2023 Rocky Mountain Altitude Carbon 70 has 16 mm more stack than 2021 Rocky Mountain Altitude Carbon 70 in the selected sizes.
More stack places the frame reference higher, not necessarily the handlebar.
- Data limitation
Published weights cannot be compared because the measurement conditions are missing or differ.
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.
Lowest0.63:1Highest3.20:1Total range510%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 2.4″ + 29-inch.
Lowest0.63:1Highest3.20:1Total range510%
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 70
2023 Rocky Mountain Altitude Carbon 70
Overview
Model Year
2021
2023
Brand
Rocky Mountain
Rocky Mountain
Model
Altitude Carbon 70
Altitude Carbon 70
Bicycle Type
Mountain
Mountain
Original MSRP
$7,329.00
$7,499.00
Colors
Purple/Black, Black/Brown
Red/Carbon, Yellow/Blue
Sizes
S, M, L, XL
S, M, L, XL
Weight
31.9 LBS|14.5 KGS
32.4 LBS|14.7 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 | 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
Frame Material
Carbon Fiber
Carbon Fiber
Fork
Fox 36 Float EVOL GRIP2 Performance Elite Series 170mm | 27.5 = 37mm Offset | 29 = 44mm Offset
Fox 38 Float EVOL GRIP2 Performance Elite Series 170mm | 27.5 = 37mm Offset | 29 = 44mm Offset
Rear Shock
Fox Float X2 Performance | Sealed Bearing Eyelet | SM = 210x55mm | MD - LG - XL = 230x60mm
Fox Float X2 Performance | Sealed Bearing Eyelet | 25x8mm F Hardware | SM = 210x55mm | MD - LG - XL = 230x60mm | Size-Specific tune in FAQ
Drivetrain
Shifters
Shimano XT
Shimano XT
Rear Derailleur
Shimano XT
Shimano XT
Crankset
Shimano XT | 27.5 = 34T | 29 = 32T
Shimano XT | 32T | 24mm Spindle | 170mm Crank Length
Bottom Bracket
Shimano SM-BB71
Shimano SM-BBMT500
Cassette
Shimano XT 10-51T
Shimano XT 10-51T
Chain
Shimano M8100
Shimano M8100
Brakes
Brakes
Shimano XT Trail 4 Piston
Shimano XT Trail 4 Piston | Metal Pads | F:Shimano RT66 203mm | R:Shimano RT66 180mm
Cockpit & Contact Points
Headset
FSA Orbit NO.57E
FSA Orbit NO.57E | Sealed Stainless 36°x45° Bearings | 30.2mm x 41mm x 7.1mm Upper | 40mm x 51.8mm x 7.5mm Lower | 1.5" Crown Race
Handlebar
Race Face Turbine R 780mm
Rocky Mountain AM | 780mm Width | 38mm Rise | 9° Backsweep | 5° Upsweep | 35 Clamp
Stem
Rocky Mountain 35 AM | 40mm
Rocky Mountain 35 AM | 5° Rise | All Sizes = 40m
Saddle
WTB Volt Race 142
WTB Volt Race 142
Seatpost
Race Face Turbine R (by Fox) Dropper 30.9mm | SM = 125mm | MD = 150mm | LG - XL = 175mm
Race Face Turbine R (by Fox) Dropper 30.9mm | SM = 125mm | MD = 150mm | LG = 175mm | XL = 200mm
Wheels & Tires
Hubs
Front: Rocky Mountain Sealed Boost 15mm; Rear: DT Swiss 370 Boost 148mm
Front: Rocky Mountain Sealed Boost 15mm; Rear: DT Swiss 370 Boost 148mm | 18T Star-Ratchet
Rims
Race Face AR 30 / Tubeless Ready - Tape / Valves Incl
Race Face AR 30 | 32H | Tubeless Ready - Tape / Valves Incl
Spokes
DT Swiss Competition 2.0/1.8/2.0
DT Swiss Competition 2.0/1.8/2.0
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 EXO+ Tubeless Ready
Wheel Size
29"; 27.5"
29"; 27.5"
Geometry · choose a size for each bicycle
Geometry size
Reach
484 mm
510 mm
Stack
631 mm
647 mm
Effective top tube
637 mm
671 mm
Head-tube angle
65.4°
65°
Seat-tube angle
76.4°
76°
Seat tube
445 mm
480 mm
Head tube
110 mm
125 mm
Chainstay / rear center
436 - 447
437 - 448
Wheelbase
1248 mm
1285 mm
Bottom-bracket drop
22 mm
27 mm
Standover height
818 mm
816 mm
Wheel size
29
29
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.