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2021 Rocky Mountain Slayer Carbon 90

Launched at $7,999Lists today at $8,359 (2026-09)

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What a used one is worth

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New

$4,470

$2,886 to $5,385

Like new

$4,246

$2,742 to $5,116

Excellent

$4,023

$2,598 to $4,847

Good

$3,352

$2,165 to $4,039

Fair

$2,458

$1,588 to $2,962

For parts

$1,341

$866 to $1,616

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

Overview

Brand: Rocky Mountain
Model family: Slayer
Model year: 2021
Category: Mountain · enduro
Frame material: carbon
Sizes: S, M, L, XL
Wheel size: 27.5 or 29
Wheel setup: either
Launch MSRP (US): $7,999
Current list price: $8,359 (as of 2026-09)

Drivetrain

Speeds: 12
Groupset: Shimano XTR
Electronic: false

Build

Fork: Fox 38 Float EVOL GRIP2 Factory Series | 27.5 = 180mm, 37mm Offset | 29 = 180mm, 44mm Offset
Stem: Rocky Mountain 35 CNC | 0° Rise | All Sizes = 40m
Tires: F: Maxxis Minion DHF 2.5 WT 3C MaxxGrip DD Tubeless Ready // R: Maxxis Minion DHR II 2.4 WT 3C MaxxGrip DD Tubeless Ready
Brakes: Shimano XTR Trail 4 Piston | Finned Metal Pads | RT86 203mm F Rotor | RT86 203mm R Rotor
Saddle: WTB Volt Race | Cromoly Rails | 142mm Width
Wheels: Race Face ARC 30 | Tubeless Ready - Tape | Valves Incl | 32H rims; hubs: Rocky Mountain Sealed Boost 15mm / DT Swiss 350 Boost 148mm | RMB Axle | 163mm x 12mm x 1.5mm
Cassette: Shimano XTR 12s 10-51T
Crankset: Race Face Next R Cinch | 27.5 = 34T | 29 = 32T | 30mm Spindle | 170mm Crank Length
Seatpost: Race Face Turbine R (by Fox) Dropper 30.9mm | SM = 125mm | MD = 150mm | LG - XL = 175mm
Shifters: Shimano XTR
Handlebar: Race Face SixC | 820mm Width | 27.5 = 35mm Rise | 29 = 20mm Rise | 8° Backsweep | 4° Upsweep | 35mm Clamp
Rear shock: Fox DHX2 Factory | Steel Spring | Sealed Bearing Eyelet | 25x8mm F Hardware | All Sizes = 230x65mm | Size-Specific tune in FAQ
Travel rear mm: 27
Rear derailleur: Shimano XTR
Travel front mm: 180

Geometry

L 29: Reach mm: 462; Stack mm: 639; Chainstay mm: 443; Wheelbase mm: 1262; Head angle deg: 63.2; Seat angle deg: 75.2
M 29: Reach mm: 439; Stack mm: 625; Chainstay mm: 443; Wheelbase mm: 1233; Head angle deg: 63.2; Seat angle deg: 75.2
XL 29: Reach mm: 493; Stack mm: 653; Chainstay mm: 443; Wheelbase mm: 1299; Head angle deg: 63.2; Seat angle deg: 75.2
M 27.5: Reach mm: 444; Stack mm: 600; Chainstay mm: 431; Wheelbase mm: 1205; Head angle deg: 63.9; Seat angle deg: 75.4
S 27.5: Reach mm: 419; Stack mm: 595; Chainstay mm: 431; Wheelbase mm: 1180; Head angle deg: 63.9; Seat angle deg: 75.4

Launch price read from Rocky Mountain's US model-year page captured 2020-09 (inside the model year). list_price_usd is the later price Rocky Mountain's archive page shows today. Geometry is the Pos. 1 - Slack position of the adjustable geometry chip. Geometry keys carry the wheel size. 3 factory colorways.

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