Bicycle Archive · Specification report

2026 Rocky Mountain Altitude Powerplay Alloy 50

Velopedia Archive ID 900000849

Overview

Model year	2026
Brand	Rocky Mountain
Model	Altitude Powerplay Alloy 50
Bicycle type	Electric-assist
Archive ID	900000849
Original MSRP	$7,899.00
Colors	GREY/BLACK/GREY; RED/PURPLE
Sizes	SM; MD; LG; XL

Frameset

Frame construction	FORM™ Alloy \| Integrated Display \| LC2R Suspension System \| Threaded BB \| RIDE-4™ Adjustable Geometry + Suspension Rate \| 160mm Travel \| FORM™ Alloy Rear Triangle
Frame material	Aluminum
Fork	RockShox Zeb Select RC 170mm \| 27.5 = 38mm Offset \| 29 = 44mm Offset
Rear shock	Fox Float X Performance \| Sealed Bearing Eyelet \| 25x8mm F Hardware \| SM = 210 x 55mm \| MD - LG - XL = 230 x 65mm \| Size-Specific tune in FAQ

Drivetrain

Shifters	Sram Eagle 70 Transmission Single Click
Rear derailleur	Sram Eagle 90 Transmission
Crankset	Race Face Aeffect Cinch \| 34T Transmission Ring \| 24mm Spindle \| SM - XL = 165mm
Bottom bracket	Race Face BSA 73 24mm
Cassette	Sram XS-1270 Eagle Transmission 10-52T
Chain	Sram Eagle 70 Transmission

Brakes

Brakes	Sram Maven Stealth 4 Piston \| Metal Pads

Cockpit & contact points

Headset	FSA ZS56/66 Reach Adjust \| 0mm Cups Installed \| +/- 5mm Cups Included \| Sealed Stainless 36°x45° Bearings \| 30.2mm x 41mm x 6.5mm Upper \| 40mm x 51.8mm x 8.0mm Lower \| 1.5" Crown Race
Handlebar	Rocky Mountain AM \| 780mm Width \| 38mm Rise \| 9° Backsweep \| 5° Upsweep \| 35 Clamp
Stem	Rocky Mountain 35 AM \| 0° Rise \| All Sizes = 40mm
Saddle	WTB Solano Fusion Form 142 \| Cromoly Rails
Seatpost	Tranz X +RAD2.0 Adjustable Dropper Post \| 30mm Adjustment \| Alloy MMX Lever \| 30.9mm \| XS = 120mm \| SM = 150mm \| MD = 170mm \| LG = 200mm \| XL = 230mm

Wheels & tires

Hubs	Front: Novatec D791SB Sealed Boost 15mm; Rear: Novatec E-MTB Pro Boost 148mm
Rims	WTB ST I30 Tough TCS 2.0 \| 32H
Spokes	DT Swiss Elemental 2.0
Front tire	Maxxis Assegai 2.5 WT 3C MaxxGrip DD Tubeless Ready
Rear tire	Maxxis Minion DHR II 2.4 WT 3C MaxxTerra DD Tubeless Ready
Wheel size	27.5"; 29"

E-bike system

Motor	Dyname S4 Pro Mountain Bike Drive \| 250w Nominal Power \| 1000W Max Power \| 110Nm \| Rocky Mountain Micro Remote \| Low RPM - High Efficiency class 1 eMTB System \| Designed in Canada
Battery	720 Wh Removable Integrated Li-Ion \| 100% Charged in 3:55 (4A) / 7:35 (2A) \| 80% Charged in 2:55 (4A) / 6:05 (2A)
Display/remote	Rocky Mountain Jumbotron \| Drive System Customization \| Battery & Assist Level \| Trip \| Speed \| Cadence \| Top Tube Integration
Charger	Rocky Mountain Powerplay FAST Charger \| 4A \| 48V \| Higo Deep Socket Connector

Geometry · MD

Seat tube	420 mm
Effective top tube	584 mm
Head tube	110 mm
Head-tube angle	63.1°
Seat-tube angle	78.1°
Chainstay / rear center	448 mm
Wheelbase	1253 mm
Bottom-bracket drop	16.2 mm
Reach	450 mm
Stack	632 mm
Standover height	830 mm

Geometry · LG

Seat tube	440 mm
Effective top tube	622 mm
Head tube	120 mm
Head-tube angle	63.1°
Seat-tube angle	77.1°
Chainstay / rear center	448 mm
Wheelbase	1283 mm
Bottom-bracket drop	16.3 mm
Reach	475 mm
Stack	641 mm
Standover height	828 mm

Geometry · XL

Seat tube	470 mm
Effective top tube	654 mm
Head tube	130 mm
Head-tube angle	63.1°
Seat-tube angle	77.1°
Chainstay / rear center	458 mm
Wheelbase	1327 mm
Bottom-bracket drop	16.2 mm
Reach	505 mm
Stack	651 mm
Standover height	829 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 22, 2026.