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2018 Rocky Mountain Thunderbolt Alloy 30

Launched at $2,599Lists today at $2,599 (2026-09)

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What a used one is worth

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New

$1,131

$684 to $1,407

Like new

$1,074

$650 to $1,337

Excellent

$1,018

$615 to $1,267

Good

$848

$513 to $1,056

Fair

$622

$376 to $774

For parts

$339

$205 to $422

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: 2018
Category: Mountain · trail
Frame material: aluminum
Sizes: XS, S, M, L, XL
Wheel size: 27.5
Launch MSRP (US): $2,599
Current list price: $2,599 (as of 2026-09)

Drivetrain

Speeds: 11
Groupset: SRAM NX
Electronic: false

Build

Fork: RockShox Recon Gold Air 130mm
Stem: Rocky Mountain AM
Tires: Maxxis Minion DHR II Folding 27.5 x 2.3 / Maxxis Crossmark II 27.5 x 2.25
Brakes: Sram Level 180 mm / 160 mm
Saddle: WTB Volt Race
Wheels: WTB SX19 rims; hubs: Rocky Mountain Sealed Boost 15mm / Sram MTH 746 142mm
Cassette: Sram PG-1130 11-42T
Crankset: Race Face Aeffect Cinch 32T Steel
Seatpost: Rocky Mountain SL 30.9mm
Shifters: Sram NX
Handlebar: Rocky Mountain AM 760mm
Rear shock: RockShox Monarch RT
Travel rear mm: 120
Rear derailleur: Sram NX
Travel front mm: 130

Geometry

L: Reach mm: 446; Stack mm: 595; Chainstay mm: 421; Wheelbase mm: 1156; Head angle deg: 67.5; Seat angle deg: 74
M: Reach mm: 423; Stack mm: 585; Chainstay mm: 421; Wheelbase mm: 1130; Head angle deg: 67.5; Seat angle deg: 74
S: Reach mm: 401; Stack mm: 576; Chainstay mm: 421; Wheelbase mm: 1104; Head angle deg: 67.5; Seat angle deg: 74
XL: Reach mm: 472; Stack mm: 609; Chainstay mm: 421; Wheelbase mm: 1188; Head angle deg: 67.5; Seat angle deg: 74
XS: Reach mm: 378; Stack mm: 567; Chainstay mm: 421; Wheelbase mm: 1078; Head angle deg: 67.5; Seat angle deg: 74

Launch price read from Rocky Mountain's US model-year page captured 2017-10 (inside the model year). Geometry is the Neutral position of the adjustable geometry chip.

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