Velopedia Bicycle Archive

2021 Rocky Mountain Instinct Carbon 90

Original specifications: 29"; 27.5" wheels · 30.03 LBS|13.65 KGS published weight · geometry for 5 published sizes.

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At a glance

Archive #900004827

Model year: 2021
Category: Mountain
Original MSRP: $9,399.00
Sizes: XS, S, M, L, XL
Colors: Green/Carbon, Purple/Beige
Weight: 30.03 LBS|13.65 KGS
Geometry: 5 manufacturer sizes
In this record: 22 specifications · 3 archived images · original MSRP · geometry

Model history 3 other years

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Identification clues

2021 archived details

Published colors: Green/Carbon, Purple/Beige
Frame: Carbon Fiber

Clues, not proof of model year. Colors vary and components may have been replaced.

Original buildCarbon Fiber · 29"; 27.5"

Manufacturer catalog

Published sizes and colors

5 sizes · 2 colors

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

XSSMLXL

Published colors

Green/CarbonPurple/Beige

Frameset

Frame Construction	SMOOTHWALL™ Carbon. Full Sealed Cartridge Bearings. Press Fit BB. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9™ Adjustable Geometry. 2 Position Axle. 140mm Travel. SMOOTHWALL™ Carbon Rear Triangle
Frame Material	Carbon Fiber
Fork	Fox 36 Float EVOL FIT4 Factory Series 150mm \| 27.5 = 37mm Offset \| 29 = 44mm Offset
Rear Shock	Fox Float DPX2 Factory \| Sealed Bearing Eyelet \| XS - SM = 190x45mm \| MD - LG - XL = 210x52.5mm

Drivetrain

Shifters	Shimano XTR
Rear Derailleur	Shimano XTR
Crankset	Race Face Next R Cinch \| 27.5 = 34T \| 29 = 32T
Bottom Bracket	Race Face BB92 30mm
Cassette	Shimano XTR 12s 10-51T
Chain	Shimano XTR 12s

Brakes

Brakes	Shimano XTR Trail 4 Piston

Cockpit & Contact Points

Headset	FSA Orbit NO.57E
Handlebar	Race Face Next R 780mm
Stem	Rocky Mountain 35 CNC
Saddle	WTB Volt Race 142
Seatpost	Race Face Turbine R (by Fox) Dropper 30.9mm \| XS - SM = 125mm \| MD = 150mm \| LG - XL = 175mm

Wheels & Tires

Hubs	Front: Rocky Mountain Sealed Boost 15mm; Rear: DT Swiss 350 Boost 148mm
Rims	Race Face ARC Carbon 31 / Tubeless Ready - Tape / Valves Incl
Spokes	DT Swiss Competition 2.0/1.8/2.0
Front Tire	Maxxis Minion DHF 2.5 WT 3C MaxxTerra EXO+ Tubeless Ready
Rear Tire	Maxxis Minion DHR II 2.4 WT 3C MaxxTerra EXO+ Tubeless Ready
Wheel Size	29"; 27.5"

Geometry

5 sizes · 12 measurements

Frame measurements by size.

All geometry measurements54 size / setup combinations · 12 measurements

Measurement	SM · 29″ · POS.1 Slack	MD · 29″ · POS.1 Slack	LG · 29″ · POS.1 Slack	XL · 29″ · POS.1 Slack	SM · 29″ · POS.2	MD · 29″ · POS.2	LG · 29″ · POS.2	XL · 29″ · POS.2	SM · 29″ · POS.3	MD · 29″ · POS.3	LG · 29″ · POS.3	XL · 29″ · POS.3	SM · 29″ · POS.4	MD · 29″ · POS.4	LG · 29″ · POS.4	XL · 29″ · POS.4	SM · 29″ · POS.5 Neutral	MD · 29″ · POS.5 Neutral	LG · 29″ · POS.5 Neutral	XL · 29″ · POS.5 Neutral	SM · 29″ · POS.6	MD · 29″ · POS.6	LG · 29″ · POS.6	XL · 29″ · POS.6	SM · 29″ · POS.7	MD · 29″ · POS.7	LG · 29″ · POS.7	XL · 29″ · POS.7	SM · 29″ · POS.8	MD · 29″ · POS.8	LG · 29″ · POS.8	XL · 29″ · POS.8	SM · 29″ · POS.9 Steep	MD · 29″ · POS.9 Steep	LG · 29″ · POS.9 Steep	XL · 29″ · POS.9 Steep	XS · 27.5″ · POS.1 Slack	SM · 27.5″ · POS.1 Slack	XS · 27.5″ · POS.2	SM · 27.5″ · POS.2	XS · 27.5″ · POS.3	SM · 27.5″ · POS.3	XS · 27.5″ · POS.4	SM · 27.5″ · POS.4	XS · 27.5″ · POS.5 Neutral	SM · 27.5″ · POS.5 Neutral	XS · 27.5″ · POS.6	SM · 27.5″ · POS.6	XS · 27.5″ · POS.7	SM · 27.5″ · POS.7	XS · 27.5″ · POS.8	SM · 27.5″ · POS.8	XS · 27.5″ · POS.9 Steep	SM · 27.5″ · POS.9 Steep
Seat tube	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	380 mm	420 mm	445 mm	480 mm	355 mm	380 mm	355 mm	380 mm	355 mm	380 mm	355 mm	380 mm	355 mm	380 mm	355 mm	380 mm	355 mm	380 mm	355 mm	380 mm	355 mm	380 mm
Effective top tube	583 mm	609 mm	638 mm	671 mm	583 mm	609 mm	637 mm	671 mm	582 mm	608 mm	637 mm	670 mm	582 mm	608 mm	637 mm	670 mm	582 mm	608 mm	636 mm	670 mm	581 mm	607 mm	636 mm	669 mm	581 mm	608 mm	636 mm	669 mm	581 mm	607 mm	635 mm	669 mm	580 mm	607 mm	635 mm	668 mm	551 mm	578 mm	550 mm	578 mm	550 mm	577 mm	550 mm	577 mm	549 mm	577 mm	549 mm	577 mm	549 mm	576 mm	548 mm	576 mm	548 mm	575 mm
Head tube	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	95 mm	110 mm	125 mm	90 mm	100 mm	90 mm	100 mm	90 mm	100 mm	90 mm	100 mm	90 mm	100 mm	90 mm	100 mm	90 mm	100 mm	90 mm	100 mm	90 mm	100 mm
Head-tube angle	65°	65.1°	65.1°	65.1°	65.2°	65.3°	65.3°	65.3°	65.4°	65.5°	65.5°	65.5°	65.4°	65.5°	65.5°	65.5°	65.7°	65.7°	65.7°	65.7°	65.8°	65.8°	65.8°	65.8°	65.8°	65.8°	65.8°	65.8°	66.1°	66°	66°	66°	66.3°	66.2°	66.2°	66.2°	65.3°	65.3°	65.5°	65.5°	65.7°	65.7°	65.7°	65.7°	65.9°	65.9°	66.1°	66.1°	66.1°	66.1°	66.3°	66.3°	66.6°	66.6°
Seat-tube angle	76°	76.1°	76.1°	76.1°	76.2°	76.3°	76.3°	76.3°	76.4°	76.5°	76.5°	76.5°	76.4°	76.5°	76.5°	76.5°	76.7°	76.7°	76.7°	76.7°	76.8°	76.8°	76.8°	76.8°	76.8°	76.8°	76.8°	76.8°	77.1°	77°	77°	77°	77.3°	77.2°	77.2°	77.2°	76.3°	76.3°	76.5°	76.5°	76.7°	76.7°	76.7°	76.7°	76.9°	76.9°	77.1°	77.1°	77.1°	77.1°	77.3°	77.3°	77.6°	77.6°
Chainstay / rear center	438 - 449	438 - 449	438 - 449	438 - 449	438 - 449	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	436 - 447	436 - 447	436 - 447	436 - 447	436 - 447	436 - 447	436 - 447	436 - 447	428 - 439	428 - 439	428 - 439	428 - 439	427 - 438	427 - 438	427 - 438	427 - 438	427 - 438	427 - 438	426 - 437	426 - 437	426 - 437	426 - 437	426 - 437	426 - 437	425 - 436	425 - 436
Wheelbase	1182 mm	1210 mm	1241 mm	1277 mm	1182 mm	1209 mm	1241 mm	1277 mm	1182 mm	1209 mm	1241 mm	1277 mm	1182 mm	1209 mm	1241 mm	1277 mm	1182 mm	1209 mm	1240 mm	1277 mm	1182 mm	1209 mm	1240 mm	1277 mm	1182 mm	1209 mm	1240 mm	1277 mm	1182 mm	1209 mm	1240 mm	1276 mm	1181 mm	1208 mm	1240 mm	1276 mm	1134 mm	1164 mm	1134 mm	1163 mm	1134 mm	1163 mm	1134 mm	1163 mm	1133 mm	1162 mm	1133 mm	1162 mm	1133 mm	1162 mm	1132 mm	1162 mm	1132 mm	1161 mm
Bottom-bracket drop	45 mm	43 mm	43 mm	43 mm	42 mm	41 mm	41 mm	41 mm	39 mm	39 mm	39 mm	39 mm	39 mm	39 mm	39 mm	39 mm	37 mm	36 mm	36 mm	36 mm	34 mm	33 mm	33 mm	33 mm	34 mm	34 mm	34 mm	34 mm	31 mm	31 mm	31 mm	31 mm	28 mm	28 mm	28 mm	28 mm	27 mm	27 mm	24 mm	24 mm	22 mm	22 mm	21 mm	21 mm	19 mm	19 mm	16 mm	16 mm	16 mm	16 mm	13 mm	13 mm	11 mm	11 mm
Reach	430 mm	456 mm	481 mm	511 mm	433 mm	458 mm	483 mm	513 mm	435 mm	460 mm	485 mm	515 mm	435 mm	460 mm	485 mm	515 mm	437 mm	462 mm	487 mm	517 mm	439 mm	464 mm	489 mm	519 mm	439 mm	464 mm	489 mm	519 mm	441 mm	466 mm	491 mm	521 mm	444 mm	468 mm	493 mm	523 mm	408 mm	433 mm	410 mm	435 mm	412 mm	437 mm	412 mm	437 mm	414 mm	439 mm	417 mm	441 mm	417 mm	441 mm	419 mm	444 mm	421 mm	446 mm
Stack	615 mm	619 mm	633 mm	646 mm	614 mm	618 mm	631 mm	645 mm	612 mm	616 mm	629 mm	643 mm	612 mm	616 mm	630 mm	643 mm	611 mm	615 mm	628 mm	642 mm	609 mm	613 mm	627 mm	640 mm	609 mm	614 mm	627 mm	640 mm	608 mm	612 mm	625 mm	639 mm	606 mm	610 mm	624 mm	637 mm	585 mm	594 mm	584 mm	593 mm	582 mm	591 mm	582 mm	591 mm	581 mm	589 mm	581 mm	589 mm	579 mm	588 mm	577 mm	586 mm	576 mm	584 mm
Standover height	742 mm	798 mm	798 mm	798 mm	744 mm	799 mm	799 mm	799 mm	745 mm	800 mm	800 mm	800 mm	746 mm	800 mm	800 mm	800 mm	749 mm	801 mm	801 mm	801 mm	750 mm	802 mm	802 mm	802 mm	751 mm	802 mm	802 mm	802 mm	754 mm	803 mm	803 mm	803 mm	756 mm	804 mm	804 mm	804 mm	754 mm	754 mm	756 mm	756 mm	757 mm	757 mm	757 mm	757 mm	758 mm	758 mm	759 mm	759 mm	759 mm	759 mm	760 mm	760 mm	761 mm	761 mm
Wheel size	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

Pedal cadence

RPM

Speed units

RPM = pedal turns per minute.

SM · 29″, MD · 29″, LG · 29″, XL · 29″32T · 10–51T · 12-speed

Lowest0.63:1 Highest3.20:1 Total range510%

Estimated speed At 90 RPM Lowest gear4.9 mph Highest gear25.1 mph

Rear tire: 2.4″ + 29-inch.

XS · 27.5″, SM · 27.5″34T · 10–51T · 12-speed

Lowest0.67:1 Highest3.40:1 Total range510%

Estimated speed At 90 RPM Lowest gear5.0 mph Highest gear25.3 mph

Rear tire: 2.4″ + 27.5-inch.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Original size / build

Gears Drivetrain

Front teeth Smallest rear teeth Largest rear teeth

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Rear tire marking

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

Rim diameter (BSD, mm) Tire width (mm)

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Cadence (RPM) Speed units

Gear, dimension and cadence changes update results automatically.

Gearing comparison
Measure	Original	Your setup
Lowest ratio	—	—
Highest ratio	—	—
Total range	—	—
Lowest-gear speed	—	—
Highest-gear speed	—	—

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications

Chain · Original

Shimano XTR 12s

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Retailer offers

Shimano Deore CN-M6100 Chain Silver, 12 Speed, 126 Links

Replacement option

Competitive Cyclist ↗$28.20

Cassette · Original

Shimano XTR 12s 10-51T

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Retailer offers

Shimano XTR CS-M9200 12 Speed 10-51T Cassette Silver, 10-51t

Specification match

Competitive Cyclist ↗$500.01

Front tire · Original

Maxxis Minion DHF 2.5 WT 3C MaxxTerra EXO+ Tubeless Ready

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More parts (7)Fewer parts

Bottom bracket · Original

Race Face BB92 30mm Before ordering: Use the spacer setup for your crank.

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Retailer offers

Race Face Cinch BB92 Bottom Bracket Black, 30mm Spindle, Double Row Bearing, External Seal

Replacement option

Competitive Cyclist ↗$83.00

Rear derailleur · Original

Shimano XTR Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.

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Retailer offers

Shimano XTR M9250 Rear Derailleur One Color, SGS 12 speed,Top Normal

Specification match

Competitive Cyclist ↗$665.01

Rear tire · Original

Maxxis Minion DHR II 2.4 WT 3C MaxxTerra EXO+ Tubeless Ready

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Saddle · Original

WTB Volt Race 142

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Shifters · Original

Shimano XTR Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.

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Handlebar · Original

Race Face Next R 780mm

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Headset · Original

FSA Orbit NO.57E

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Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Service essentialsQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Drivetrain: 12-speedCheck: Match the installed drivetrain family, not just its speed count.
Bottom bracket / shell: Race Face BB92 30mmCheck: Verify shell type and width, crank interface, and spindle length or spacers.

Not confirmed in this record: Front tire · Rear tire · Seatpost diameter. Check the fitted parts for these details.

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

2021 Rocky Mountain Instinct Carbon 90