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2020 Rocky Mountain Thunderbolt Alloy 10

Launched at $2,099Lists today at $2,099 (2026-09)

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What a used one is worth

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New

$1,079

$682 to $1,314

Like new

$1,025

$648 to $1,249

Excellent

$971

$614 to $1,183

Good

$809

$511 to $986

Fair

$593

$375 to $723

For parts

$324

$205 to $394

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: 2020
Category: Mountain · trail
Frame material: aluminum
Sizes: XS, S, M, L, XL
Wheel size: 27.5
Launch MSRP (US): $2,099
Current list price: $2,099 (as of 2026-09)

Drivetrain

Groupset: Shimano Deore
Electronic: false

Build

Fork: RockShox Recon RL 140mm 37mm Offset
Stem: Rocky Mountain AM
Tires: WTB Trail Boss Comp 27.5 x 2.25 / WTB Trail Boss Comp 27.5 x 2.25
Brakes: Shimano MT200 2 Piston / Shimano RT30 180mm / Shimano RT30 180mm
Saddle: WTB Volt 142
Wheels: WTB ST i25 TCS Tubeless rims; hubs: Shimano MT400 Boost 15mm / Shimano MT400 Boost 148mm
Cassette: SunRace CSMS2 11-46T
Crankset: Rocky Mountain Microdrive 2 PC 32T
Seatpost: Rocky Mountain Toonie Drop 30.9mm
Shifters: Shimano Deore
Handlebar: Rocky Mountain AM 760mm
Weight kg: 14.46
Rear shock: RockShox Deluxe Select+ RT
Travel rear mm: 140
Rear derailleur: Shimano Deore
Travel front mm: 140

Geometry

L: Reach mm: 459; Stack mm: 607; Chainstay mm: 425; Wheelbase mm: 1188; Head angle deg: 66.6; Seat angle deg: 74.6
M: Reach mm: 436; Stack mm: 598; Chainstay mm: 425; Wheelbase mm: 1161; Head angle deg: 66.6; Seat angle deg: 74.6
S: Reach mm: 414; Stack mm: 588; Chainstay mm: 425; Wheelbase mm: 1135; Head angle deg: 66.6; Seat angle deg: 74.6
XL: Reach mm: 485; Stack mm: 621; Chainstay mm: 425; Wheelbase mm: 1220; Head angle deg: 66.6; Seat angle deg: 74.6
XS: Reach mm: 386; Stack mm: 579; Chainstay mm: 425; Wheelbase mm: 1103; Head angle deg: 66.6; Seat angle deg: 74.6

Launch price read from Rocky Mountain's US model-year page captured 2019-08 (inside the model year). Geometry is the Neutral position of the adjustable geometry chip. 2 factory colorways.

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