MountainPartial spec

2019 Rocky Mountain Thunderbolt Alloy 50

Lists today at $3,349 (2026-09)

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What a used one is worth

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New

$1,584

$979 to $1,950

Like new

$1,505

$930 to $1,853

Excellent

$1,426

$881 to $1,755

Good

$1,188

$734 to $1,463

Fair

$871

$538 to $1,073

For parts

$475

$294 to $585

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

Overview

Brand: Rocky Mountain
Model family: Thunderbolt
Model year: 2019
Category: Mountain · trail
Frame material: aluminum
Sizes: XS, S, M, L, XL
Wheel size: 27.5
Current list price: $3,349 (as of 2026-09)

Drivetrain

Speeds: 11
Groupset: Shimano Deore XT
Electronic: false

Build

Fork: Fox 34 Float Performance 130mm
Stem: Rocky Mountain AM
Tires: Maxxis Minion DHR II Folding 27.5 x 2.3 / Maxxis Minion DHR II Folding 27.5 x 2.3
Brakes: Shimano MT500 / Shimano RT66 180mm / Shimano RT66 180mm
Saddle: WTB Volt Race
Wheels: Sun Helix TR25 SL Tubeless Compatible - Tape | Valves | Sealant Not Incl rims; hubs: Rocky Mountain Sealed Boost 15mm / DT Swiss 370 Boost 148mm
Cassette: Shimano SLX 11-46T
Crankset: Race Face Aeffect Cinch 32T Steel
Seatpost: Race Face Aeffect Dropper 30.9mm
Shifters: Shimano SLX
Handlebar: Rocky Mountain AM 760mm
Rear shock: Fox Float DPS EVOL Performance
Travel rear mm: 130
Rear derailleur: Shimano XT
Travel front mm: 130

Geometry

L: Reach mm: 463; Stack mm: 604; Chainstay mm: 425; Wheelbase mm: 1184; Head angle deg: 67; Seat angle deg: 75
M: Reach mm: 441; Stack mm: 594; Chainstay mm: 425; Wheelbase mm: 1157; Head angle deg: 67; Seat angle deg: 75
S: Reach mm: 418; Stack mm: 585; Chainstay mm: 425; Wheelbase mm: 1131; Head angle deg: 67; Seat angle deg: 75
XL: Reach mm: 490; Stack mm: 617; Chainstay mm: 425; Wheelbase mm: 1216; Head angle deg: 67; Seat angle deg: 75
XS: Reach mm: 391; Stack mm: 576; Chainstay mm: 425; Wheelbase mm: 1099; Head angle deg: 67; Seat angle deg: 75

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. 2 factory colorways.

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