MountainPartial spec

2021 Rocky Mountain Instinct Alloy 50

Lists today at $4,499 (2026-09)

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What a used one is worth

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New

$2,514

$1,623 to $3,029

Like new

$2,388

$1,542 to $2,877

Excellent

$2,263

$1,461 to $2,726

Good

$1,885

$1,218 to $2,272

Fair

$1,383

$893 to $1,666

For parts

$754

$487 to $909

From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.

Overview

Brand: Rocky Mountain
Model family: Instinct
Model year: 2021
Category: Mountain · trail
Frame material: aluminum
Sizes: XS, S, M, L, XL
Wheel size: 27.5 or 29
Wheel setup: either
Current list price: $4,499 (as of 2026-09)

Drivetrain

Speeds: 12
Groupset: Shimano Deore XT
Electronic: false

Build

Fork: Fox 36 Float EVOL GRIP Performance Series 150mm | 27.5 = 37mm Offset | 29 = 44mm Offset
Stem: Rocky Mountain 35 AM | 5° Rise | All Sizes = 40mm
Tires: F: Maxxis Minion DHF 2.5 WT 3C MaxxTerra EXO+ Tubeless Ready // R: Maxxis Minion DHR II 2.4 WT 3C MaxxTerra EXO+ Tubeless Ready
Brakes: Shimano SLX Trail 4 Piston | Metallic Pads | RT66 180mm F Rotor | RT66 180mm R Rotor
Saddle: WTB Volt Race | Cromoly Rails | 142mm Width
Wheels: WTB ST Light i30 TCS 2.0 Tubeless | Tubeless Ready - Tape | Valves Incl | 32H rims; hubs: Rocky Mountain Sealed Boost 15mm / DT Swiss 370 Boost 148mm | RMB Axle | 163mm x 12mm x 1.5mm
Cassette: Shimano Deore 10-51T 12spd
Crankset: Race Face Ride Cinch | 27.5 = 34T | 29 = 32T | 24mm Spindle | 170mm Crank Length
Seatpost: Race Face Aeffect R Dropper 30.9mm | Shimano MT500 Remote | XS - SM = 125mm | MD = 150mm | LG - XL = 175mm
Shifters: Shimano SLX
Handlebar: Rocky Mountain AM | 780mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 35mm Clamp
Weight kg: 15.3
Rear shock: Fox Float DPX2 Performance | Sealed Bearing Eyelet | 25x8mm F Hardware | XS - SM = 190x45mm | MD - LG - XL = 210x52.5mm | Size-Specific tune in FAQ
Travel rear mm: 140
Rear derailleur: Shimano XT
Travel front mm: 150

Geometry

L 29: Reach mm: 487; Stack mm: 628; Wheelbase mm: 1240; Head angle deg: 65.7; Seat angle deg: 76.7
M 29: Reach mm: 462; Stack mm: 615; Wheelbase mm: 1209; Head angle deg: 65.7; Seat angle deg: 76.7
S 29: Reach mm: 437; Stack mm: 611; Wheelbase mm: 1182; Head angle deg: 65.7; Seat angle deg: 76.7
XL 29: Reach mm: 517; Stack mm: 642; Wheelbase mm: 1277; Head angle deg: 65.7; Seat angle deg: 76.7
S 27.5: Reach mm: 439; Stack mm: 589; Wheelbase mm: 1162; Head angle deg: 65.9; Seat angle deg: 76.9
XS 27.5: Reach mm: 414; Stack mm: 581; Wheelbase mm: 1133; Head angle deg: 65.9; Seat angle deg: 76.9

list_price_usd is the price Rocky Mountain's archive page shows today; no in-season capture confirmed it as the launch price. Geometry is the Neutral position of the adjustable geometry chip. Geometry keys carry the wheel size. 2 factory colorways.

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