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2021 Rocky Mountain

Altitude Alloy 70

A 27.5″ / 29″ aluminum frame full suspension enduro bike with high-end components.
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Manufacturer Price

$5,479
Weight35.6 lbs  
FrameAluminum
SuspensionFull, 160 / 170mm
ForkFox Factory Float 38
ShockFox Float X2 Factory
Wheels27.5″ / 29″ Aluminum
GroupsetXT
BrakesShimano XT Hydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Altitude Alloy 70
Other Enduro bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

29 mph

Altitude Alloy 70

26 mph

Similar Bikes

Highest gear

(descending)

Reviews

Summary

The Rocky Mountain Altitude is a versatile enduro bike praised for its adjustable geometry, supple suspension, and excellent traction on difficult trails. It excels in descending and rough terrain, though some reviews note it could be more efficient on climbs. The bike's Ride 9 system allows for significant tuning, catering to a wide range of preferences and riding styles.

Pros
  • Adjustable geometry with Ride 9 system

  • Supple and effective suspension

  • Excellent traction and stability on difficult trails

  • Versatile with many spec levels and price points

  • Clean, fully tubed internal cable routing

Cons
  • Less-than-super-efficient climbing prowess

  • Overwhelming number of Ride-9 settings

  • Rear shock requires extra pressure compared to factory recommendations

Key Quotes
The suspension feels uniquely supple, fast, and totally unencumbered, soaking up bumps better than Jonny Moseley in his prime.
BIKE Magazine logoBIKE Magazine
The Altitude’s leaner looks give you a sense that this bike would be pretty good at climbing and trail rambling too.
Bikerumor logoBikerumor
This bike was a treat in a lot of different scenarios.
Jeff Kendall-Weed logoJeff Kendall-Weed

Feedback?

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NSMB
2022 Rocky Mountain Altitude Powerplay Carbon 70 Review

Mar 2022

RMB's torquey Dyname 4.0 motor and "mid-high pivot" platform separate the Altitude Powerplay from the herd...

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Loam Wolf
Review: Rocky Mountain Altitude Powerplay C90 Rally Edition

Jun 2021 · Drew Rohde

Rocky Mountain’s Altitude Powerplay can keep up with aggressive riders wanting to push hard yet is equally at home cruising trails under riders who just want to explore and have fun.

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Mountain Bike Action
Mountain Bike Action Bike Test: Rocky Mountain's Altitude Enduro Machine

Jan 2021 · McCoy

Transitioning out the gate and going down the trail was a blast!

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Enduro Mountainbike Magazine
Rocky Mountain Altitude Rally Edition review – The best enduro bike of 2021

Jan 2021 · Christoph Bayer

This is what winners look like! The Rocky Mountain Altitude is the winner of our big enduro bike group test and thus the best enduro bike of 2021. What makes the Altitude so good?

Highs
  • Superb control in the roughest terrain

  • Brilliant combination of traction and pop

  • Balanced handling and well-specced

  • Variable geometry

Lows
  • Slower climber

  • Hefty price

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Jeff Kendall-Weed
The review I DIDN’T want to publish: the Rocky Mountain Altitude!!!

Jan 2021

The 2021 Rocky Mountain Altitude is an exceptional enduro bike, and I was blown away at how well I got along with it.

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Bikerumor
Long Term Review: Rocky Mountain’s 2021 Altitude Carbon 70 29 is a long-travel quiver killer

Oct 2020 · Steve Fisher

Rocky Mountain Bikes' 2021 Altitude Carbon 70 29 offers an adjustable ride that handles everything from 'long-travel trail' to 'full enduro'.

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BIKE Magazine
First Impressions: 2021 Rocky Mountain Altitude Carbon 70

Sep 2020

The longest-travel, biggest-wheeled, highest-speed, most capable Rocky Mountain Altitude to date.

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Freehub
Bike Review | 2021 Rocky Mountain Altitude Carbon 70

Sep 2020 · Spencer Johnson

Rocky Mountain Bicycles has beefed up its venerable Altitude trail bike for 2021, adding 10 millimeters of travel to the front and back to make it even more capable in the burliest of terrain. The result is a hard-charging bike that can handle steep, technical trails without sacrificing the playfulness and maneuverability of its previous iterations. The 2021 Rocky Mountain Altitude Carbon 70 that we tested is designed to be a do-anything enduro bike, with 170 millimeters of travel in front and 160 millimeters in the rear. It features Rocky Mountain’s RIDE-9 adjustment system, which offers nine positions for the shock mounting point—allowing riders to fine-tune the bike’s geometry to suit their preferences while also making subtle changes to the kinematics of the suspension. I found position three to be the sweet spot for me, as it felt like a great combination of slack geometry for descending confidence without compromising its ability to pedal up steep hills with ease. Climbing up the steep singletrack ascents of Bellingham and Chelan, Washington proved to me just how well the new Altitude goes uphill. With a reasonably steep seat angle of 76 degrees in the short position and a chainstay of 437 millimeters, my front wheel stayed firmly planted on the ground during the steepest of climbs. I positioned my saddle all the way forward on the seat’s rails to make it easier to keep my weight over the front wheel, while also making for a comfortable and stable cockpit that didn’t feel too unwieldy around tight switchbacks. Rocky also seems to have engineered just enough anti-squat into the suspension platform to keep the pedal bob at bay while still providing ample traction during chunky climbs.

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Geometry
Specs
Build
Frame

FORM™ Alloy. Full Sealed Cartridge Bearings. Press Fit BB92. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9™ Adjustable Geometry. 2 Position Axle. 160mm Travel. FORM™ Alloy Rear Triangle

BB StandardBB86/BB92, Press Fit

Fork

Fox 38 Float EVOL GRIP2 Factory Series 170mm | 27.5 = 37mm Offset | 29 = 44mm Offset

Travel170mm

Spring TypeAir

Shock

Fox Float X2 Factory | Sealed Bearing Eyelet | 25x8mm F Hardware | SM = 210x55mm | MD - LG - XL = 230x60mm | Size-Specific tune in FAQ

Travel160mm

Bottom Bracket

Shimano SM-BBMT500

Headset

FSA Orbit NO.57E | 36°x45° Bearings | 30.2mm x 41mm x 7.1mm Upper | 40mm x 51.8mm x 7.5mm Lower | 1.5" Crown Race

Stem

Rocky Mountain 35 AM | 5° Rise | All Sizes = 40m

Handlebar

Rocky Mountain AM | 780mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 35mm Clamp

Saddle

WTB Volt Race | Cromoly Rails | 142mm Width

Seatpost

Race Face Aeffect R Dropper 30.9mm | Shimano MT500 Remote | SM = 125mm | MD = 150mm | LG - XL = 175mm

TypeDropper

Grips

Ergon GE1 EVO Lock On

Groupset
Rear Derailleur

Shimano XT

Crank

Race Face Aeffect R Cinch | 27.5 = 34T | 29 = 32T | 24mm Spindle | 170mm Crank Length

Shifters

Shimano XT

Cassette

Shimano SLX 10-51T

Chain

Shimano M7100

Brakes

Shimano XT Trail 4 Piston | Metal Pads | RT66 203mm F Rotor | RT66 180mm R Rotor

TypeShimano XT Hydraulic Disc

Wheels
Rims

Race Face AR 30 | Tubeless Ready - Tape | Valves Incl | 32H

Spokes

DT Swiss Competition 2.0/1.8/2.0

Front Hub

Rocky Mountain Sealed Boost 15mm

Rear Hub

DT Swiss 370 Boost 148mm | RMB Axle | 163mm x 12mm x 1.5mm

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

Rider Notes
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First added September 11

Last updated April 6

Not listed for 1,893 days