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2024 Rocky Mountain

Instinct C99 Sram

A 27.5″ / 29″ carbon frame electronic full suspension enduro bike with ultra high-end components.

Manufacturer Price

$10,499
Weight30.5 lbs  
FrameCarbon
SuspensionFull, Electronic, 150 / 160mm
ForkRockShox Lyrik Ultimate Flight Attendant
ShockRockShox Super Deluxe Flight Attendant
Wheels27.5″ / 29″ Carbon
Drivetrain1 × 12 Electronic
GroupsetX0 Eagle Transmission, Eagle AXS
Power MeterIntegrated
BrakesSRAM Code RSC Hydraulic Disc
SeatpostDropper
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Instinct C99 Sram
Other Enduro 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

Instinct C99 Sram

26 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Sizing
XS

4'10" – 5'3"

SM

5'0" – 5'6"

MD

5'3" – 5'10"

LG

5'7" – 6'3"

XL

6'0" – 6'6"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews

Summary

The Rocky Mountain Instinct is a versatile enduro bike praised for its adjustable geometry, refined suspension kinematics, and confident handling on technical terrain. It offers a wide range of customization options, including the Ride-4 system and reach adjust headset, making it suitable for varied riding styles. However, some reviews note issues with stock shock tuning and component choices like under-powered brakes and a press-fit bottom bracket.

Pros
  • Wide range of geometry adjustments

  • Refined frame geometry and suspension kinematics

  • More adjustability to suit varied terrain or riding styles

  • Versatile and confident bike in most terrain

  • Excellent suspension performance

Cons
  • Under-powered brakes and fork

  • Shock tune not to reviewers' liking

  • Press fit BB92 bottom bracket may not be preferred by all

  • Hubs could be better

  • Not the most inspiring climber

Key Quotes
Rocky Mountain Bikes’ Instinct has always been an ideal choice for a do-it-all trail bike
Bikerumor logoBikerumor
The new Instinct is RMB’s most adjustable MTB yet
Bikerumor logoBikerumor
It was intuitive and confidence inspiring.
NSMB logoNSMB
This is a borderline enduro bike, but one I’d be happy to own for just about everything.
Singletrack World logoSingletrack World
Bike riding happens in the real world, and that's where the Instinct loses its edge.
Pinkbike

Feedback?

View all reviews

99 Spokes
Rocky Mountain Instinct A10

Sep 2024

The Rocky Mountain Instinct A10 offers great adjustability and ride quality but falls short in component quality for its price.

Highs
  • Wide range of geometry adjustments

  • Fun and intuitive on-trail demeanor

Lows
  • Under-powered brakes and fork

  • Heavy (size large weighed 36.2 lbs)

Read Review

Mountain Bike Action
Rocky Mountain Instinct Review: Trail Versatility Refined - Mountain Bike Action Magazine

Jul 2025 · Ron Koch

We test the 2025 Rocky Mountain Instinct C70 Shimano—an adjustable 150/140mm trail bike built for versatility, stability, and confident descending.

Read Review

Pinkbike
Field Test Bonus: Can We Unlock the Rocky Mountain Instinct's Potential?

Nov 2024 · Henry Quinney

Three shocks and a whole bunch of laps to try to improve the Instinct.

Highs
  • Impressive weight

  • Good geometry

  • Features

  • Adjustment

Lows
  • Shock tune not to liking

  • Requires re-valve for optimal performance

Read Review

Loam Wolf
The New Rocky Mountain Instinct Powerplay SL

Oct 2024

The new Instinct Powerplay SL packs a punch in a lightweight package. Powered by the all-new Dyname S4 Lite drive system.

Read Review

Singletrack World
Rocky Mountain Instinct C70: First Ride Review

Mar 2024 · Tim Wild

Rocky Mountain Instinct at a glance: longer chainstays, steeper seat angle, longer dropper posts plus adjustable reach and chainstay length.

Read Review

Bikerumor
Rocky Mountain’s New Instinct is a Highly Adjustable Quiver Killer

Mar 2024 · Steve Fisher

Rocky Mountain refines the Instinct into their 'holy grail' do-everything trail bike, adding a reach adjust headset for 2024.

Read Review

NSMB
2024 Rocky Mountain Instinct

Mar 2024

Rocky's super-capable trail bike sees updates and refinements to frame features, geo, and suspension kinematics. We've got a first look and details.

Read Review

Singletracks
The 2024 Rocky Mountain Instinct Adds Frame Storage, Adjustability, and Aggressive Geo [Review]

Mar 2024 · Matt Miller

The latest Rocky Mountain Instinct trail bike is a versatile, do-everything bike and technical trail smashers will love it most.

Highs
  • Versatile and confident bike in most terrain

  • Stiff carbon frame holds its line

  • Exceptional suspension performance

Lows
  • Hubs could be better

  • Not the most inspiring climber

Read Review

Geometry
Specs
Build
Frame

SMOOTHWALL™ Carbon | Full Sealed Cartridge Bearings | Press Fit BB | Internal Cable Routing | 2-Bolt ISCG05 Tabs | RIDE-4™ Adjustable Geometry | 2 Position Axle | 29" = 150mm | 27.5" = 140mm SMOOTHWALL™ Carbon Rear Triangle

BB StandardBB86/BB92, Press Fit

Hanger StandardUDH

ColorBlack / Red/silver

Fork

RockShox Lyrik Ultimate Flight Attendant 160mm | Auto-Adjust Flight Attendant Damper | 27.5 = 37mm Offset | 29 = 42mm Offset

Travel160mm

Spring TypeAir

Shock

RockShox Super Deluxe Ultimate Flight Attendant | Sealed Bearing Eyelet | 20x8mm F Hardware | XS - SM = 190x45mm | MD - LG - XL = 210x55mm | Size-Specific tune in FAQ

Travel150mm

Bottom Bracket

SRAM BB92 DUB Wide

Headset

FSA Orbit NO.85 Reach Adjust| 0mm Cups Installed | +/- 5mm Cups Included | Durable Sealed Stainless 36°x45° Bearings | 30.2mm x 41mm x 7.1mm Upper | 40mm x 51.8mm x 7.5mm Lower | 1.5" Crown Race

Stem

Race Face Turbine R | 0° Rise | All Sizes = 40mm

Handlebar

Race Face Next R | XS = 760mm | SM - XL = 780mm Width | 20mm Rise | 8° Backsweep | 5° Upsweep | 35mm Clamp

Saddle

WTB Silverado Carbon 142 | Carbon Rails

Seatpost

Rock Shox Reverb AXS Wireless Post | XS = 125mm | SM = 150mm | MD - XL = 170mm

TypeDropper

Grips

ODI Elite Pro Lock On

Groupset
Rear Derailleur

SRAM X0 Transmission Wireless

Crank

SRAM X0 Transmission Alloy | 32T | DUB Spindle | Power Meter Sensor | Crankarm Length: XS -SM = 165mm | MD - XL = 170mm

Power Meter

SRAM X0 Transmission Alloy | 32T | DUB Spindle | Power Meter Sensor | Crankarm Length: XS -SM = 165mm | MD - XL = 170mm

Shifters

SRAM AXS Wireless Pod Controller

Cassette

SRAM X0 Transmission 10-52T

Chain

SRAM XO Flattop T-Type

Brakes

SRAM Code RSC 4 Piston | Metal Pads

TypeSRAM Code RSC Hydraulic Disc

Wheels
Rims

DT Swiss XMC 1501 Carbon

Spokes

DT Swiss XMC 1501 Carbon

Front Hub

DT Swiss XMC 1501 Carbon

Rear Hub

DT Swiss XMC 1501 Carbon

Tires

F: Maxxis Dissector 2.4 WT 3C MaxxTerra EXO Tubeless Ready // R: Maxxis Dissector 2.4 WT 3C MaxxTerra EXO Tubeless Ready //

Rider Notes
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First added March 6

Last updated October 26

Not listed for 594 days