Velopedia Bicycle Archive

2021 Rocky Mountain Altitude Powerplay Alloy 70

Original specifications: 27.5" wheels · 53.68 LBS|24.4 KGS published weight · geometry for 4 published sizes.

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At a glance

Archive #900004665
Model year
2021
Category
Mountain
Original MSRP
$6,799.00
Sizes
S, M, L, XL
Colors
Beige/Purple
Weight
53.68 LBS|24.4 KGS
Geometry
4 manufacturer sizes
In this record
26 specifications · archived image · original MSRP · geometry
Campaign
Original buildAluminum · 27.5"

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Beige/Purple

Frameset

Frame ConstructionFORM™ Alloy. Full Sealed Cartridge Bearings. Press Fit BB. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9™ Adjustable Geometry + Suspension Rate. 150mm Travel. FORM™ Alloy Rear Triangle
Frame MaterialAluminum
ForkRockShox Lyrik Select 160mm | 37mm Offset
Rear ShockRockShox Deluxe Select+ | Sealed Bearing Eyelet | 210x55mm

Drivetrain

ShiftersShimano XT
Rear DerailleurShimano XT
CranksetRace Face Aeffect Cinch 34T
Bottom BracketShimano SM-BBMT500
CassetteShimano XT 10-51T
ChainShimano M6100

Brakes

BrakesShimano XT Trail 4 Piston

Cockpit & Contact Points

HeadsetFSA Orbit NO.57E
HandlebarRocky Mountain AM 780mm
StemRocky Mountain 35 AM | 40mm
SaddleWTB Volt Race 142
SeatpostRace Face Aeffect R Dropper 30.9mm | Shimano MT500 Remote | SM = 125mm | MD - LG = 150mm | XL = 175mm

Wheels & Tires

HubsFront: Rocky Mountain Sealed Boost 15mm Torque Cap; Rear: DT Swiss Hybrid 370 Boost 148mm
RimsWTB ST i30 TCS 2.0 Tubeless / Tubeless Ready - Tape / Valves Incl
SpokesDT Swiss Champion 2.0
Front TireMaxxis Minion DHF 2.5 WT 3C MaxxGrip DD Tubeless Ready
Rear TireMaxxis Minion DHR II 2.4 WT 3C MaxxGrip DD Tubeless Ready
Wheel Size27.5"

E-bike System

MotorDyname 3.0 Class 1 eMTB Drive | 250w | 108Nm | Upgraded High Cadence Boost & Power Extension Firmware
Battery672 Wh Fully Integrated Li-Ion | 48V FAST Charger | 80% Charge in 2:10 | 100% Charge in 3:50
Display/RemoteiWoc LED Indicators
ChargerDyname FAST Charger | 48V

Geometry

4 sizes · 12 measurements

Frame measurements by size.

All geometry measurements36 size / setup combinations · 12 measurements
MeasurementSM · 27.5″ · POS.1 SlackMD · 27.5″ · POS.1 SlackLG · 27.5″ · POS.1 SlackXL · 27.5″ · POS.1 SlackSM · 27.5″ · POS.2MD · 27.5″ · POS.2LG · 27.5″ · POS.2XL · 27.5″ · POS.2SM · 27.5″ · POS.3MD · 27.5″ · POS.3LG · 27.5″ · POS.3XL · 27.5″ · POS.3SM · 27.5″ · POS.4MD · 27.5″ · POS.4LG · 27.5″ · POS.4XL · 27.5″ · POS.4SM · 27.5″ · POS.5 NeutralMD · 27.5″ · POS.5 NeutralLG · 27.5″ · POS.5 NeutralXL · 27.5″ · POS.5 NeutralSM · 27.5″ · POS.6MD · 27.5″ · POS.6LG · 27.5″ · POS.6XL · 27.5″ · POS.6SM · 27.5″ · POS.7MD · 27.5″ · POS.7LG · 27.5″ · POS.7XL · 27.5″ · POS.7SM · 27.5″ · POS.8MD · 27.5″ · POS.8LG · 27.5″ · POS.8XL · 27.5″ · POS.8SM · 27.5″ · POS.9 SteepMD · 27.5″ · POS.9 SteepLG · 27.5″ · POS.9 SteepXL · 27.5″ · POS.9 Steep
Seat tube419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm419 mm457 mm483 mm521 mm
Effective top tube578 mm603 mm628 mm658 mm577 mm602 mm627 mm658 mm577 mm602 mm627 mm657 mm577 mm602 mm627 mm657 mm576 mm601 mm626 mm656 mm576 mm601 mm626 mm656 mm576 mm601 mm626 mm656 mm575 mm600 mm625 mm655 mm575 mm600 mm625 mm655 mm
Head tube100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm100 mm120 mm130 mm145 mm
Head-tube angle64.5°65°65°65.1°64.7°65.2°65.2°65.2°64.8°65.3°65.3°65.4°64.9°65.4°65.4°65.4°65°65.6°65.6°65.6°65.2°65.7°65.7°65.7°65.3°65.8°65.8°65.8°65.4°65.9°65.9°65.9°65.6°66.1°66.1°66.1°
Seat-tube angle74°74°74°74.1°74.2°74.2°74.2°74.2°74.3°74.3°74.3°74.4°74.4°74.4°74.4°74.4°74.5°74.6°74.6°74.6°74.7°74.7°74.7°74.7°74.8°74.8°74.8°74.8°74.9°74.9°74.9°74.9°75.1°75.1°75.1°75.1°
Chainstay / rear center426 mm426 mm426 mm426 mm426 mm426 mm426 mm426 mm426 mm426 mm426 mm426 mm425 mm425 mm425 mm425 mm425 mm425 mm425 mm425 mm425 mm425 mm425 mm425 mm424 mm424 mm424 mm424 mm424 mm424 mm424 mm424 mm423 mm423 mm423 mm423 mm
Wheelbase1157 mm1180 mm1206 mm1239 mm1157 mm1179 mm1206 mm1238 mm1157 mm1179 mm1206 mm1238 mm1156 mm1179 mm1206 mm1238 mm1156 mm1179 mm1205 mm1238 mm1156 mm1178 mm1205 mm1237 mm1156 mm1178 mm1205 mm1237 mm1155 mm1178 mm1204 mm1237 mm1155 mm1177 mm1204 mm1236 mm
Bottom-bracket drop14 mm14 mm14 mm14 mm12 mm12 mm12 mm12 mm10 mm10 mm10 mm10 mm9 mm9 mm9 mm9 mm7 mm7 mm7 mm7 mm4 mm5 mm5 mm5 mm4 mm4 mm4 mm4 mm2 mm2 mm2 mm2 mm1 mm1 mm1 mm1 mm
Reach411 mm430 mm452 mm479 mm412 mm431 mm454 mm480 mm414 mm433 mm456 mm482 mm414 mm434 mm456 mm483 mm416 mm435 mm458 mm484 mm418 mm437 mm460 mm486 mm418 mm438 mm460 mm486 mm420 mm439 mm462 mm488 mm422 mm441 mm464 mm490 mm
Stack583 mm604 mm614 mm628 mm582 mm603 mm613 mm626 mm581 mm602 mm611 mm625 mm580 mm601 mm611 mm625 mm579 mm600 mm610 mm623 mm578 mm599 mm608 mm622 mm578 mm599 mm608 mm622 mm576 mm597 mm607 mm620 mm575 mm596 mm605 mm619 mm
Standover height810 mm816 mm814 mm813 mm811 mm817 mm814 mm813 mm812 mm817 mm815 mm814 mm812 mm818 mm816 mm815 mm813 mm818 mm816 mm816 mm814 mm819 mm817 mm817 mm814 mm819 mm817 mm817 mm815 mm820 mm818 mm818 mm816 mm821 mm819 mm819 mm
Wheel size27.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.527.5

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes34T · 10–51T
Lowest0.67:1 Highest3.40:1 Total range510%
Estimated speed At 90 RPM Lowest gear5.0 mph Highest gear25.3 mph

Rear tire: 2.4″ + 27.5-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.

Try other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano M6100
Retailer offers
Cassette · Original
Shimano XT 10-51T
Retailer offers
Front tire · Original
Maxxis Minion DHF 2.5 WT 3C MaxxGrip DD Tubeless Ready
More parts (7)Fewer parts
Rear tire · Original
Maxxis Minion DHR II 2.4 WT 3C MaxxGrip DD Tubeless Ready
Bottom bracket · Original
Shimano SM-BBMT500
Saddle · Original
WTB Volt Race 142
Crankset · Original
Race Face Aeffect Cinch 34T
Rear derailleur · Original
Shimano XT Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Shifters · Original
Shimano XT Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Headset · Original
FSA Orbit NO.57E

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Service essentialsQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Bottom bracket / shell
Shimano SM-BBMT500Check: Verify shell type and width, crank interface, and spindle length or spacers.

Not confirmed in this record: Front tire · Rear tire · Drivetrain · Seatpost diameter. Check the fitted parts for these details.

Bike-specific inspection checklist 27 checks based on 7 archived component groups Open checklistClose checklist
0 of 27 checked Progress stays in this browser for this record.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2021 Rocky Mountain Altitude Powerplay Alloy 70 · Electric-assist · Published sizes: S, M, L, XL

Archived: Frame: FORM™ Alloy. Full Sealed Cartridge Bearings. Press Fit BB. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9™ Adjustable Geometry + Suspension Rate. 150mm Travel. FORM™ Alloy Rear Triangle · Fork: RockShox Lyrik Select 160mm | 37mm Offset

Archived: Fork: RockShox Lyrik Select 160mm | 37mm Offset · Rear shock: RockShox Deluxe Select+ | Sealed Bearing Eyelet | 210x55mm

Archived: Shifters: Shimano XT · Rear derailleur: Shimano XT · Crankset: Race Face Aeffect Cinch 34T · Bottom bracket: Shimano SM-BBMT500 · Cassette: Shimano XT 10-51T · Chain: Shimano M6100

Archived: Brakes: Shimano XT Trail 4 Piston

Archived: Wheel size: 27.5" · Rims: WTB ST i30 TCS 2.0 Tubeless / Tubeless Ready - Tape / Valves Incl · Hubs: Front: Rocky Mountain Sealed Boost 15mm Torque Cap; Rear: DT Swiss Hybrid 370 Boost 148mm

Controls and contact points

Archived: Headset: FSA Orbit NO.57E · Handlebar: Rocky Mountain AM 780mm · Stem: Rocky Mountain 35 AM | 40mm · Seatpost: Race Face Aeffect R Dropper 30.9mm | Shimano MT500 Remote | SM = 125mm | MD - LG = 150mm | XL = 175mm · Saddle: WTB Volt Race 142

Archived: Motor: Dyname 3.0 Class 1 eMTB Drive | 250w | 108Nm | Upgraded High Cadence Boost & Power Extension Firmware · Battery: 672 Wh Fully Integrated Li-Ion | 48V FAST Charger | 80% Charge in 2:10 | 100% Charge in 3:50 · Display: iWoc LED Indicators · Charger: Dyname FAST Charger | 48V

Before and during the test ride

Follow the full used-bike inspection order →

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Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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