MountainVerified spec

2014 Rocky Mountain Thunderbolt 770

Lists today at $4,000 (2026-10)

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What a used one is worth

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New

$1,247

$690 to $1,620

Like new

$1,185

$656 to $1,539

Excellent

$1,122

$621 to $1,458

Good

$935

$518 to $1,215

Fair

$686

$380 to $891

For parts

$374

$207 to $486

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: 2014
Category: Mountain · xc
Frame material: aluminum
Sizes: XS, S, M, L, XL
Wheel size: 27.5
Current list price: $4,000 (as of 2026-10)

Drivetrain

Speeds: 10
Groupset: Shimano XTR
Chainrings: 2
Electronic: false

Build

Fork: Fox 32 Float 27.5 120 FIT Dual Remote CTD
Stem: Race Face Turbine 6° x 70-90mm
Tires: Continental X King Folding 27.5" x 2.2"
Brakes: Shimano XT Hydraulic Disc 180/160mm
Saddle: WTB Silverado Race SL
Wheels: Stan's ZTR Crest Tubeless Ready rims; hubs: Shimano XT / Centerlock / 32H / 15mm Axle / Shimano XT / Centerlock / 32H / 12 x 142mm Axle
Cassette: Shimano XT 11-36T 10spd
Crankset: Race Face Turbine 170-175mm 38/24T 2x10spd
Seatpost: Race Face Turbine 30.9mm x 400mm
Shifters: Shimano XT Rapid Fire I-Spec 2x10spd
Handlebar: Race Face Turbine 3/4 Rise Ø31.8mm x 725mm x 9° Sweep
Weight kg: 12.79
Rear shock: Fox Float Dual Remote CTD Custom Race Valved
Travel rear mm: 120
Rear derailleur: Shimano XTR Shadow Plus Direct Mount 10spd
Travel front mm: 120

Geometry

L: Reach mm: 449; Stack mm: 601; Chainstay mm: 426; Wheelbase mm: 1150; Head angle deg: 68.5; Seat angle deg: 74.5
M: Reach mm: 426; Stack mm: 591; Chainstay mm: 426; Wheelbase mm: 1124; Head angle deg: 68.5; Seat angle deg: 74.5
S: Reach mm: 404; Stack mm: 582; Chainstay mm: 426; Wheelbase mm: 1098; Head angle deg: 68.5; Seat angle deg: 74.5
XL: Reach mm: 475; Stack mm: 615; Chainstay mm: 426; Wheelbase mm: 1181; Head angle deg: 68.5; Seat angle deg: 74.5
XS: Reach mm: 381; Stack mm: 573; Chainstay mm: 426; Wheelbase mm: 1072; Head angle deg: 68.5; Seat angle deg: 74.5

Spec from Rocky Mountain's official bike archive (resources.bikes.com), 2014 Thunderbolt page. Frame: FORM™ Alloy Custom Hydroformed Frame; ABC™ Pivots; Tapered Head Tube; Press Fit BB; Internal Cable Routing; Internal "Stealth" Dropper Post Routing. Weight is for size Medium as published. list_price_usd is the USD MSRP the official archive page shows today (read 2026-10); no in-season capture confirmed it as the launch price.

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