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2016 Rocky Mountain

Thunderbolt 799 MSL

A 27.5″ carbon frame full suspension trail bike with ultra high-end components.
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Manufacturer Price

$11,499
Weight24.9 lbs  
FrameCarbon
SuspensionFull, 120 / 120mm
ForkFox Float 32
ShockFox Float DPS Performance
Wheels27.5″ Carbon
Drivetrain2 × 11 Electronic
GroupsetXTR Di2
BrakesShimano XTR Hydraulic Disc
SeatpostDropper
Learn about Rocky Mountain
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Thunderbolt 799 MSL
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

Thunderbolt 799 MSL

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
XS

5'1" – 5'6"

SM

5'4" – 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'0" – 6'5"

🐐 Estimated

Rider Fit Notes

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Reviews

Summary

The Rocky Mountain Thunderbolt is a versatile trail bike praised for its lightweight design, efficient climbing, and adjustable geometry via the Ride-9 system. It excels in technical terrain with solid suspension performance, though some reviews note limitations in aggressive downhill scenarios due to its 120mm travel. The bike's high-end builds and innovative features like grease ports and Pipelock pivots are highlights, but its premium price and occasional suspension setup challenges are noted drawbacks.

Pros
  • Lightweight and efficient climbing

  • Adjustable geometry with Ride-9 system

  • Solid suspension performance

  • Innovative features like grease ports and Pipelock pivots

  • High-end build quality

Cons
  • Premium price point

  • Limited by 120mm travel in aggressive terrain

  • Suspension setup can be finicky

  • Requires frequent maintenance for bushings

Key Quotes
This bike is built to go fast.
BIKE Magazine logoBIKE Magazine
The Rocky’s suspension is efficient when climbing and offers excellent traction, but it’s active during out of the saddle exertions.
Bikerumor logoBikerumor
It’s designed for our own special blend of XC and trail riders—people who hammer at the pointy end of the pack, but stay aggressive and stylish when terrain gets rougher
Dirt Mountainbike logoDirt Mountainbike
Playfulness and Aggression are the name of the game climbing and descending.
NSMB logoNSMB
Rocky Mountain has gone all in with 27.5 for 2015 like many other companies
MTBR logoMTBR

Feedback?

View all reviews

NSMB
Rocky Mountain Thunderbolt: Reviewed

Nov 2016

Don’t let its ‘mere’ 120mm of rear wheel travel or its ‘small’ 27.5″ wheels deceive you – this is a barn-burner of a trail bike.

Read Review

Freehub
Bike Review | Rocky Mountain Thunderbolt BC Edition

Sep 2016 · JC Canfield

The second year of the Rocky Mountain Thunderbolt BC Edition provides us a bike that defies traditional spec and provides adjustable geometry, designed for riders who are looking to push the boundaries of XC. This beefed up version of the Thunderbolt begged to be pushed to its limits. So for two months I sought the ends of the bike’s capability on everything from mellow out-and-back loops to terrain some might deem as “a bad idea” with a short travel bike. I was searching to answer the question of whether this is an XC bike with trail chops, or more of a well rounded trail-slayer, ready to take on the whole mountain. Primarily designed for XC riding, the souped up BC Edition spec includes a pair of 2.4” Maxxis Ardents, Race Face Next carbon bars and a custom-valved Rock Shox Monarch RT3 putting the overall build a little over 26 pounds, which is stupidly light for a bike categorized as “trail.”

Read Review

Enduro Mountainbike Magazine
Rocky Mountain Thunderbolt BC Edition Review

Jul 2016 · Christoph Bayer

As the trail bike storm brews, it’s time to set the scales and verify if the Rocky Mountain Thunderbolt BC Edition lives up the brand’s high standards.

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MBR
Rocky Mountain Thunderbolt BC Edition (2016) review - MBR

Mar 2016 · Danny Milner

The Rocky Mountain Thunderbolt BC Edition is an aggressively specced short-travel ripper that we tested on home turf in Canada

Highs
  • With so little mass, it’s easy to chuck about. Black on black build-kit is super-slick

Lows
  • Front end needs to grow by at least 20mm. Suspension performance held back by bushing friction

Read Review

BIKE Magazine
Review: Rocky Mountain Thunderbolt 799 MSL

Feb 2016

Every year, one bike earns the distinction of ‘most ridiculously expensive bike,’ and this year the title went to the Rocky Mountain Thunderbolt 799 MSL.

Read Review

Bikerumor
First Impressions: Rocky Mountain Thunderbolt 770 MSL

Jun 2015 · Saris Mercanti

A few years ago when 29ers where still as widely misunderstood as fat bikes, there was a trend of building up mini DH bikes out of four inch travel slopestyle bikes. Those bikes were (and are) about the most the fun you could have on a trail, but they were terrible for racking up miles. …

Read Review

Mountain Bike Action
Bike Test: Rocky Mountain Thunderbolt 770MSL

May 2015 · McCoy

It’ll flow through any section of trail with the right amount of finesse and confidence

Read Review

MTBR
Eurobike: Rocky Mountain Thunderbolt 799 MSL

Sep 2014 · Don Palermini

Rocky Mountain’s Thunderbolt 799 MSL an electrifying XC rig with a shocking price tag. - Mtbr.com

Read Review

Geometry
Specs
Build
Frame

Smoothwall Carbon. BC2 Pivots & Grease Ports. Pipelock Main Pivot. Press Fit BB. RIDE-9 Adjustable Geometry & Suspension Rate. Di2 Ready.

BB StandardBB86/BB92, Press Fit

Fork

Fox 32 Float Fit4 Adjust Kashima 120mm. Rebound / Firm - Medium - Adjustable Open Settings / Tapered Steerer

Travel120mm

Spring TypeAir

Shock

Fox Float DPS Kashima Rear Remote Custom Valved. SmoothLink Design 120mm. Rebound / Remote Firm - Medium - Open Settings

Travel120mm

Bottom Bracket

Race Face Cinch 30mm BB92 Pressfit

Headset

FSA Orbit C-40: IS42mm Top / 52mm Bottom Tapered

Stem

RMB CNC 35mm 5° x 60-80mm

Handlebar

Race Face Next Carbon 1/2 Rise 35mm x 740mm x 9° Sweep

Saddle

WTB Silverado Carbon

Seatpost

RockShox Reverb Stealth 30.9mm x 350-420mm

TypeDropper

Grips

ESI Silicone Super Light

Groupset
Rear Derailleur

Shimano XTR Di2 Shadow Plus Direct Mount 11spd

Front Derailleur

Shimano XTR Di2 E Mount 2x11spd

Crank

Race Face Next SL 170-175mm 38/28T 2x11spd

Shifters

Shimano XTR Switch Shift Di2 2x11spd

Cassette

Shimano XTR 11-40T 11spd

Chain

Shimano XTR Sil-Tec 11spd

Brakes

Shimano XTR Ice Tech Hydraulic Disc 180mm

TypeShimano XTR Hydraulic Disc

Brake Levers

Shimano XTR

Wheels
Rims

Stan\'s Valor Carbon Incl Tubeless Kit

Spokes

Sapim Laser

Front Hub

Stan\'s Neo + / Oversized Stainless Bearings / 15mm Axle

Rear Hub

Stan\'s Neo + / Wide Stance Oversized Stainless Bearings / 6 Pawl - 5deg Engagement Alloy Freehub / 12 x 142mm Axle

Tires

Maxxis Maxx Speed Tubeless Ready Ardent Race 27.5\" x 2.2\"

Rider Notes
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First added September 9

Last updated April 14

Not listed for 1,880 days