Quiver

Rocky Mountain2021

2021 Rocky Mountain Altitude Alloy (29)

Enduro

The 2021 Rocky Mountain Altitude Alloy (29) sits in the middle of the range for enduro bikes. Reach 423 to 504 mm, stack 601 to 652 mm. The Altitude Alloy 50 (29) build comes with Maxxis Assegai tires.

Source: resources.bikes.com. Checked .

Key facts

Model year
2021
Type
Enduro
Geometry labels
S, M, L, and XL
Geometry
Complete for every size
Source
resources.bikes.com
Checked

Geometry by size

2021 Rocky Mountain Altitude Alloy (29) geometry drawing, size MSide view of the 2021 Rocky Mountain Altitude Alloy (29) frame in size M, drawn to scale from its published geometry, with lettered dimension lines.J 1218A 449mmB 624mmJ 1218mmH 438mmK 34mmC 611mmD 64.4°E 75.4°F 95mmG 420mmL 813mm
Geometry drawing, size M, to scale.
2021 Rocky Mountain Altitude Alloy (29) geometry by size
MeasurementSMLXL
Reach(mm)423449474504
Stack(mm)601624638652
Head tube angle(°)64.464.464.464.4
Seat tube angle(°)75.475.475.475.4
Effective top tube(mm)580611640673
Chainstay length(mm)428438438438
Wheelbase(mm)1172121812491285
BB drop(mm)20343434
Standover(mm)767813813813
Seat tube length(mm)380420445480
Head tube length(mm)10095110125

Stock build

12 parts

Suspension

Fox 36 Performance
ForkFrom the manufacturer: Wheel size 29
Fox DPX2 Performance
Rear shock

Drivetrain

Shimano Deore M6100
Chain
CranksetFrom the manufacturer: Chainring interface directmountFrom the manufacturer: Spindle / BB interface Cinch

Wheels & Tires

TireFrom the manufacturer: TPI 60 TPIFrom the manufacturer: Tubeless ready Yes
Maxxis Minion DHR II
TireTubeless ready
Rocky Mountain Sealed Boost
Hub
HubFrom the manufacturer: Bearing type cartridge
WTB ST i30
RimFrom the manufacturer: Internal width 30mmFrom the manufacturer: Tubeless ready

Brakes

Shimano SM-RT66
RotorDiameter 160 / 180 / 203 / 220mmMount type 6-Bolt
Shimano SM-RT66
RotorDiameter 160 / 180 / 203 / 220mmMount type 6-Bolt

Seatpost & Saddle

Dropper postDiameter 30.9 / 31.6mmFrom the manufacturer: Weight 602 g

Keep your Altitude Alloy 50 (29) in Quiver

Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.

Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.

Already have Quiver? Open this build

Sources agreeManufacturer

Quick answers

Which size or configuration labels have geometry for the 2021 Rocky Mountain Altitude Alloy (29)?
Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2021 Rocky Mountain Altitude Alloy (29) in size L?
In size L, reach is 474 mm and stack is 638 mm.
What is the head tube angle of the 2021 Rocky Mountain Altitude Alloy (29)?
The head tube angle is 64.4 degrees in every size.
What does the 2021 Rocky Mountain Altitude Alloy 50 (29) ship with?
The stock build includes Fox 36 Performance, Shimano Deore M6100, Maxxis Assegai, and Shimano SM-RT66.
Which years of the Rocky Mountain Altitude are on Quiver?
Quiver has the Rocky Mountain Altitude for 2021, 2026, 2024, and 1995.

Know what is on every bike.

Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.

Explore the app
A Transition Relay build sheet: frame, fork, shock and drivetrainThe Relay’s ride photo galleryThe Relay’s ride spectrum and 2D frame geometryThe garage: five bikes and 99 recorded partsA Specialized Tarmac SL8 road build sheet

Quiver keeps track of the bikes you own.

Free on App StoreFree on Google Play