Rear tire: 2.4″ + 27.5-inch.
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
Original buildAluminum · 27.5"
Frameset
| Frame Construction | 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 |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Lyrik Select 160mm | 37mm Offset |
| Rear Shock | RockShox Deluxe Select+ | Sealed Bearing Eyelet | 210x55mm |
Drivetrain
| 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 |
Brakes
| Brakes | Shimano XT Trail 4 Piston |
|---|
Cockpit & Contact Points
| Headset | FSA Orbit NO.57E |
|---|---|
| Handlebar | Rocky Mountain AM 780mm |
| Stem | Rocky Mountain 35 AM | 40mm |
| Saddle | WTB Volt Race 142 |
| Seatpost | Race Face Aeffect R Dropper 30.9mm | Shimano MT500 Remote | SM = 125mm | MD - LG = 150mm | XL = 175mm |
Wheels & Tires
| Hubs | Front: Rocky Mountain Sealed Boost 15mm Torque Cap; Rear: DT Swiss Hybrid 370 Boost 148mm |
|---|---|
| Rims | WTB ST i30 TCS 2.0 Tubeless / Tubeless Ready - Tape / Valves Incl |
| Spokes | DT Swiss Champion 2.0 |
| Front Tire | Maxxis Minion DHF 2.5 WT 3C MaxxGrip DD Tubeless Ready |
| Rear Tire | Maxxis Minion DHR II 2.4 WT 3C MaxxGrip DD Tubeless Ready |
| Wheel Size | 27.5" |
E-bike System
| 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/Remote | iWoc LED Indicators |
| Charger | Dyname FAST Charger | 48V |
No specifications match. Try a component name or clear your search.
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements36 size / setup combinations · 12 measurements
| Measurement | SM · 27.5″ · POS.1 Slack | MD · 27.5″ · POS.1 Slack | LG · 27.5″ · POS.1 Slack | XL · 27.5″ · POS.1 Slack | SM · 27.5″ · POS.2 | MD · 27.5″ · POS.2 | LG · 27.5″ · POS.2 | XL · 27.5″ · POS.2 | SM · 27.5″ · POS.3 | MD · 27.5″ · POS.3 | LG · 27.5″ · POS.3 | XL · 27.5″ · POS.3 | SM · 27.5″ · POS.4 | MD · 27.5″ · POS.4 | LG · 27.5″ · POS.4 | XL · 27.5″ · POS.4 | SM · 27.5″ · POS.5 Neutral | MD · 27.5″ · POS.5 Neutral | LG · 27.5″ · POS.5 Neutral | XL · 27.5″ · POS.5 Neutral | SM · 27.5″ · POS.6 | MD · 27.5″ · POS.6 | LG · 27.5″ · POS.6 | XL · 27.5″ · POS.6 | SM · 27.5″ · POS.7 | MD · 27.5″ · POS.7 | LG · 27.5″ · POS.7 | XL · 27.5″ · POS.7 | SM · 27.5″ · POS.8 | MD · 27.5″ · POS.8 | LG · 27.5″ · POS.8 | XL · 27.5″ · POS.8 | SM · 27.5″ · POS.9 Steep | MD · 27.5″ · POS.9 Steep | LG · 27.5″ · POS.9 Steep | XL · 27.5″ · POS.9 Steep |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seat tube | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm | 419 mm | 457 mm | 483 mm | 521 mm |
| Effective top tube | 578 mm | 603 mm | 628 mm | 658 mm | 577 mm | 602 mm | 627 mm | 658 mm | 577 mm | 602 mm | 627 mm | 657 mm | 577 mm | 602 mm | 627 mm | 657 mm | 576 mm | 601 mm | 626 mm | 656 mm | 576 mm | 601 mm | 626 mm | 656 mm | 576 mm | 601 mm | 626 mm | 656 mm | 575 mm | 600 mm | 625 mm | 655 mm | 575 mm | 600 mm | 625 mm | 655 mm |
| Head tube | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm | 100 mm | 120 mm | 130 mm | 145 mm |
| Head-tube angle | 64.5° | 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 angle | 74° | 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 center | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 426 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm | 424 mm | 424 mm | 424 mm | 424 mm | 424 mm | 424 mm | 424 mm | 424 mm | 423 mm | 423 mm | 423 mm | 423 mm |
| Wheelbase | 1157 mm | 1180 mm | 1206 mm | 1239 mm | 1157 mm | 1179 mm | 1206 mm | 1238 mm | 1157 mm | 1179 mm | 1206 mm | 1238 mm | 1156 mm | 1179 mm | 1206 mm | 1238 mm | 1156 mm | 1179 mm | 1205 mm | 1238 mm | 1156 mm | 1178 mm | 1205 mm | 1237 mm | 1156 mm | 1178 mm | 1205 mm | 1237 mm | 1155 mm | 1178 mm | 1204 mm | 1237 mm | 1155 mm | 1177 mm | 1204 mm | 1236 mm |
| Bottom-bracket drop | 14 mm | 14 mm | 14 mm | 14 mm | 12 mm | 12 mm | 12 mm | 12 mm | 10 mm | 10 mm | 10 mm | 10 mm | 9 mm | 9 mm | 9 mm | 9 mm | 7 mm | 7 mm | 7 mm | 7 mm | 4 mm | 5 mm | 5 mm | 5 mm | 4 mm | 4 mm | 4 mm | 4 mm | 2 mm | 2 mm | 2 mm | 2 mm | 1 mm | 1 mm | 1 mm | 1 mm |
| Reach | 411 mm | 430 mm | 452 mm | 479 mm | 412 mm | 431 mm | 454 mm | 480 mm | 414 mm | 433 mm | 456 mm | 482 mm | 414 mm | 434 mm | 456 mm | 483 mm | 416 mm | 435 mm | 458 mm | 484 mm | 418 mm | 437 mm | 460 mm | 486 mm | 418 mm | 438 mm | 460 mm | 486 mm | 420 mm | 439 mm | 462 mm | 488 mm | 422 mm | 441 mm | 464 mm | 490 mm |
| Stack | 583 mm | 604 mm | 614 mm | 628 mm | 582 mm | 603 mm | 613 mm | 626 mm | 581 mm | 602 mm | 611 mm | 625 mm | 580 mm | 601 mm | 611 mm | 625 mm | 579 mm | 600 mm | 610 mm | 623 mm | 578 mm | 599 mm | 608 mm | 622 mm | 578 mm | 599 mm | 608 mm | 622 mm | 576 mm | 597 mm | 607 mm | 620 mm | 575 mm | 596 mm | 605 mm | 619 mm |
| Standover height | 810 mm | 816 mm | 814 mm | 813 mm | 811 mm | 817 mm | 814 mm | 813 mm | 812 mm | 817 mm | 815 mm | 814 mm | 812 mm | 818 mm | 816 mm | 815 mm | 813 mm | 818 mm | 816 mm | 816 mm | 814 mm | 819 mm | 817 mm | 817 mm | 814 mm | 819 mm | 817 mm | 817 mm | 815 mm | 820 mm | 818 mm | 818 mm | 816 mm | 821 mm | 819 mm | 819 mm |
| Wheel size | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
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 your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts

Shimano Deore CN-M6100 Chain Silver, 12 Speed, 126 Links
Model match

Shimano Deore CS-M6200 12-Speed Cassette Black, 10-51t, HG
Replacement option
More parts (7)Fewer parts
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
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 2021 Rocky Mountain Altitude Powerplay Alloy 70 · Electric-assist · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →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
Suspension
Evaluate the suspension →Archived: Fork: RockShox Lyrik Select 160mm | 37mm Offset · Rear shock: RockShox Deluxe Select+ | Sealed Bearing Eyelet | 210x55mm
Drivetrain
Check drivetrain wear →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
Brakes
Inspect the brakes →Archived: Brakes: Shimano XT Trail 4 Piston
Wheels and tires
Check wheels and tires →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
E-bike system
Check the battery and electronics →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
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





