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Rocky Mountain Instinct C90 Shimano - 2024

Rocky Mountain Instinct C90 Shimano
Smokin' in the Boys Room / Bad to the Bone
Please select options Unavailable


The Instinct Carbon is at home on technical trails, but still allows you to push the distance and crush the climbs. Our most versatile platform just got more adventure-ready with updated the frame features, geometry, and suspension kinematics to make sure you feel confident on the up’s, down’s, and everything in between. Meet the Instinct Carbon.

Size Metric Imperial
XS 147.5 - 157.5 cm  4’7” - 52”
SM 152.5 - 167 cm 5’0” - 5’6” 
MD 162.5 - 177.5 cm 5’4” - 5’10”
LG 172.5 - 188 cm  5’8” - 6’2”
XL 183 - 198 cm 6’0” - 6’6”

Smoothwall carbon uses one of the world’s most sophisticated carbon processes to deliver industry leading stiffness-to-weight, ride quality, and durability.

The two-position axle allows the rider to choose a short or long rear-center length that suits their personal preferences.

The RIDE-4 adjustment system allows riders to quickly fine-tune their geometry with a single Allen key. Four configurations are possible thanks to one rotating chip.

Size Specific Tune ensures that riders of all sizes get the right balance of small-bump compliance, mid-stroke support, and end-stroke progressiveness. Our design team does custom shock tunes based on real world field testing, and adjusts each tune for specific frame sizes.

The new PenaltyBox™ 2.0 downtube storage (carbon models only) includes generous capacity, custom tool wrap and our rock-solid hinged door system that doubles down as a water bottle mount and built-in concealed AirTag/Tile compartment.

Fine tune your ride with center, +/- 5mm offset options.


Frame SMOOTHWALL™ Carbon | Full Sealed Cartridge Bearings | Press Fit BB | Internal Cable Routing | 2-Bolt ISCG05 Tabs | RIDE-4™ Adjustable Geometry | 2 Position Axle | 140mm Travel. SMOOTHWALL™ Carbon Rear Triangle
Fork Fox 36 Float EVOL GRIP2 Factory Series 150mm | 27.5 = 37mm Offset | 29 = 44mm Offset
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
Rear Shock Fox Float X Factory | Sealed Bearing Eyelet | 20x8mm F Hardware | XS - SM = 190x45mm | MD - LG - XL = 210x52.5mm | MD - LG - XL = 210x52.5mm | Size-Specific tune in FAQ
Rims/Wheels Race Face ARC Carbon 31 | 28H / Tubeless Ready - Tape / Valves Incl
Hubs F: DT Swiss 350 Boost 15mm R: DT Swiss 350 Boost 148mm | 36T Star-Ratchet
Spokes DT Swiss Competition 2.0/1.8/2.0
Tires F: Maxxis Dissector 2.4 WT 3C MaxxTerra EXO Tubeless Ready // R: Maxxis Dissector 2.4 WT 3C MaxxTerra EXO Tubeless Ready
Crankset Race Face Next SL G5 Cinch | 32T | 30mm Spindle | Crankarm Length: All Sizes = 170mm
Bottom Bracket Race Face BB92 30mm
Chain Shimano XTR 12s
Rear Derailleur Shimano XTR
Cassette/Rear Cogs Shimano XTR 12s 10-51T
Shifters Shimano XTR
Handlebars Race Face Next R | 780mm Width | 20mm Rise | 8° Backsweep | 4° Upsweep | 35mm Clamp
Tape/Grips ODI Elite Pro Lock On
Stem Rocky Mountain 35 AM | 5° Rise | All Sizes = 40mm
Brakes Shimano XTR Trail 4 Piston | IceTec Metal Pads
Pedals Not included
Saddle WTB Volt 142
Seat Post Fox Transfer Factory Series 30.9mm | XS = 125mm | SM = 150mm | MD = 175mm | LG - XL = 200mm

* Subject to change without notice.