Bicycle Archive · Specification report

2021 Rocky Mountain Instinct Carbon 90

Velopedia Archive ID 900004827

Overview

Model year	2021
Brand	Rocky Mountain
Model	Instinct Carbon 90
Bicycle type	Mountain
Archive ID	900004827
Original MSRP	$9,399.00
Colors	GREEN/CARBON; PURPLE/BEIGE
Sizes	SM; MD; LG; XL; XS
Weight	30.03 LBS\|13.65 KGS

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 · SM · 29″ · POS.1 Slack

Seat tube	380 mm
Effective top tube	583 mm
Head tube	90 mm
Head-tube angle	65°
Seat-tube angle	76°
Chainstay / rear center	438 - 449
Wheelbase	1182 mm
Bottom-bracket drop	45 mm
Reach	430 mm
Stack	615 mm
Standover height	742 mm
Wheel size	29

Geometry · MD · 29″ · POS.1 Slack

Seat tube	420 mm
Effective top tube	609 mm
Head tube	95 mm
Head-tube angle	65.1°
Seat-tube angle	76.1°
Chainstay / rear center	438 - 449
Wheelbase	1210 mm
Bottom-bracket drop	43 mm
Reach	456 mm
Stack	619 mm
Standover height	798 mm
Wheel size	29

Geometry · LG · 29″ · POS.1 Slack

Seat tube	445 mm
Effective top tube	638 mm
Head tube	110 mm
Head-tube angle	65.1°
Seat-tube angle	76.1°
Chainstay / rear center	438 - 449
Wheelbase	1241 mm
Bottom-bracket drop	43 mm
Reach	481 mm
Stack	633 mm
Standover height	798 mm
Wheel size	29

Geometry · XL · 29″ · POS.1 Slack

Seat tube	480 mm
Effective top tube	671 mm
Head tube	125 mm
Head-tube angle	65.1°
Seat-tube angle	76.1°
Chainstay / rear center	438 - 449
Wheelbase	1277 mm
Bottom-bracket drop	43 mm
Reach	511 mm
Stack	646 mm
Standover height	798 mm
Wheel size	29

Geometry · SM · 29″ · POS.2

Seat tube	380 mm
Effective top tube	583 mm
Head tube	90 mm
Head-tube angle	65.2°
Seat-tube angle	76.2°
Chainstay / rear center	438 - 449
Wheelbase	1182 mm
Bottom-bracket drop	42 mm
Reach	433 mm
Stack	614 mm
Standover height	744 mm
Wheel size	29

Geometry · MD · 29″ · POS.2

Seat tube	420 mm
Effective top tube	609 mm
Head tube	95 mm
Head-tube angle	65.3°
Seat-tube angle	76.3°
Chainstay / rear center	437 - 448
Wheelbase	1209 mm
Bottom-bracket drop	41 mm
Reach	458 mm
Stack	618 mm
Standover height	799 mm
Wheel size	29

Geometry · LG · 29″ · POS.2

Seat tube	445 mm
Effective top tube	637 mm
Head tube	110 mm
Head-tube angle	65.3°
Seat-tube angle	76.3°
Chainstay / rear center	437 - 448
Wheelbase	1241 mm
Bottom-bracket drop	41 mm
Reach	483 mm
Stack	631 mm
Standover height	799 mm
Wheel size	29

Geometry · XL · 29″ · POS.2

Seat tube	480 mm
Effective top tube	671 mm
Head tube	125 mm
Head-tube angle	65.3°
Seat-tube angle	76.3°
Chainstay / rear center	437 - 448
Wheelbase	1277 mm
Bottom-bracket drop	41 mm
Reach	513 mm
Stack	645 mm
Standover height	799 mm
Wheel size	29

Geometry · SM · 29″ · POS.3

Seat tube	380 mm
Effective top tube	582 mm
Head tube	90 mm
Head-tube angle	65.4°
Seat-tube angle	76.4°
Chainstay / rear center	437 - 448
Wheelbase	1182 mm
Bottom-bracket drop	39 mm
Reach	435 mm
Stack	612 mm
Standover height	745 mm
Wheel size	29

Geometry · MD · 29″ · POS.3

Seat tube	420 mm
Effective top tube	608 mm
Head tube	95 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	437 - 448
Wheelbase	1209 mm
Bottom-bracket drop	39 mm
Reach	460 mm
Stack	616 mm
Standover height	800 mm
Wheel size	29

Geometry · LG · 29″ · POS.3

Seat tube	445 mm
Effective top tube	637 mm
Head tube	110 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	437 - 448
Wheelbase	1241 mm
Bottom-bracket drop	39 mm
Reach	485 mm
Stack	629 mm
Standover height	800 mm
Wheel size	29

Geometry · XL · 29″ · POS.3

Seat tube	480 mm
Effective top tube	670 mm
Head tube	125 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	437 - 448
Wheelbase	1277 mm
Bottom-bracket drop	39 mm
Reach	515 mm
Stack	643 mm
Standover height	800 mm
Wheel size	29

Geometry · SM · 29″ · POS.4

Seat tube	380 mm
Effective top tube	582 mm
Head tube	90 mm
Head-tube angle	65.4°
Seat-tube angle	76.4°
Chainstay / rear center	437 - 448
Wheelbase	1182 mm
Bottom-bracket drop	39 mm
Reach	435 mm
Stack	612 mm
Standover height	746 mm
Wheel size	29

Geometry · MD · 29″ · POS.4

Seat tube	420 mm
Effective top tube	608 mm
Head tube	95 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	437 - 448
Wheelbase	1209 mm
Bottom-bracket drop	39 mm
Reach	460 mm
Stack	616 mm
Standover height	800 mm
Wheel size	29

Geometry · LG · 29″ · POS.4

Seat tube	445 mm
Effective top tube	637 mm
Head tube	110 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	437 - 448
Wheelbase	1241 mm
Bottom-bracket drop	39 mm
Reach	485 mm
Stack	630 mm
Standover height	800 mm
Wheel size	29

Geometry · XL · 29″ · POS.4

Seat tube	480 mm
Effective top tube	670 mm
Head tube	125 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	437 - 448
Wheelbase	1277 mm
Bottom-bracket drop	39 mm
Reach	515 mm
Stack	643 mm
Standover height	800 mm
Wheel size	29

Geometry · SM · 29″ · POS.5 Neutral

Seat tube	380 mm
Effective top tube	582 mm
Head tube	90 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	437 - 448
Wheelbase	1182 mm
Bottom-bracket drop	37 mm
Reach	437 mm
Stack	611 mm
Standover height	749 mm
Wheel size	29

Geometry · MD · 29″ · POS.5 Neutral

Seat tube	420 mm
Effective top tube	608 mm
Head tube	95 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	437 - 448
Wheelbase	1209 mm
Bottom-bracket drop	36 mm
Reach	462 mm
Stack	615 mm
Standover height	801 mm
Wheel size	29

Geometry · LG · 29″ · POS.5 Neutral

Seat tube	445 mm
Effective top tube	636 mm
Head tube	110 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	437 - 448
Wheelbase	1240 mm
Bottom-bracket drop	36 mm
Reach	487 mm
Stack	628 mm
Standover height	801 mm
Wheel size	29

Geometry · XL · 29″ · POS.5 Neutral

Seat tube	480 mm
Effective top tube	670 mm
Head tube	125 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	437 - 448
Wheelbase	1277 mm
Bottom-bracket drop	36 mm
Reach	517 mm
Stack	642 mm
Standover height	801 mm
Wheel size	29

Geometry · SM · 29″ · POS.6

Seat tube	380 mm
Effective top tube	581 mm
Head tube	90 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1182 mm
Bottom-bracket drop	34 mm
Reach	439 mm
Stack	609 mm
Standover height	750 mm
Wheel size	29

Geometry · MD · 29″ · POS.6

Seat tube	420 mm
Effective top tube	607 mm
Head tube	95 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1209 mm
Bottom-bracket drop	33 mm
Reach	464 mm
Stack	613 mm
Standover height	802 mm
Wheel size	29

Geometry · LG · 29″ · POS.6

Seat tube	445 mm
Effective top tube	636 mm
Head tube	110 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1240 mm
Bottom-bracket drop	33 mm
Reach	489 mm
Stack	627 mm
Standover height	802 mm
Wheel size	29

Geometry · XL · 29″ · POS.6

Seat tube	480 mm
Effective top tube	669 mm
Head tube	125 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1277 mm
Bottom-bracket drop	33 mm
Reach	519 mm
Stack	640 mm
Standover height	802 mm
Wheel size	29

Geometry · SM · 29″ · POS.7

Seat tube	380 mm
Effective top tube	581 mm
Head tube	90 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1182 mm
Bottom-bracket drop	34 mm
Reach	439 mm
Stack	609 mm
Standover height	751 mm
Wheel size	29

Geometry · MD · 29″ · POS.7

Seat tube	420 mm
Effective top tube	608 mm
Head tube	95 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1209 mm
Bottom-bracket drop	34 mm
Reach	464 mm
Stack	614 mm
Standover height	802 mm
Wheel size	29

Geometry · LG · 29″ · POS.7

Seat tube	445 mm
Effective top tube	636 mm
Head tube	110 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1240 mm
Bottom-bracket drop	34 mm
Reach	489 mm
Stack	627 mm
Standover height	802 mm
Wheel size	29

Geometry · XL · 29″ · POS.7

Seat tube	480 mm
Effective top tube	669 mm
Head tube	125 mm
Head-tube angle	65.8°
Seat-tube angle	76.8°
Chainstay / rear center	437 - 448
Wheelbase	1277 mm
Bottom-bracket drop	34 mm
Reach	519 mm
Stack	640 mm
Standover height	802 mm
Wheel size	29

Geometry · SM · 29″ · POS.8

Seat tube	380 mm
Effective top tube	581 mm
Head tube	90 mm
Head-tube angle	66.1°
Seat-tube angle	77.1°
Chainstay / rear center	436 - 447
Wheelbase	1182 mm
Bottom-bracket drop	31 mm
Reach	441 mm
Stack	608 mm
Standover height	754 mm
Wheel size	29

Geometry · MD · 29″ · POS.8

Seat tube	420 mm
Effective top tube	607 mm
Head tube	95 mm
Head-tube angle	66°
Seat-tube angle	77°
Chainstay / rear center	436 - 447
Wheelbase	1209 mm
Bottom-bracket drop	31 mm
Reach	466 mm
Stack	612 mm
Standover height	803 mm
Wheel size	29

Geometry · LG · 29″ · POS.8

Seat tube	445 mm
Effective top tube	635 mm
Head tube	110 mm
Head-tube angle	66°
Seat-tube angle	77°
Chainstay / rear center	436 - 447
Wheelbase	1240 mm
Bottom-bracket drop	31 mm
Reach	491 mm
Stack	625 mm
Standover height	803 mm
Wheel size	29

Geometry · XL · 29″ · POS.8

Seat tube	480 mm
Effective top tube	669 mm
Head tube	125 mm
Head-tube angle	66°
Seat-tube angle	77°
Chainstay / rear center	436 - 447
Wheelbase	1276 mm
Bottom-bracket drop	31 mm
Reach	521 mm
Stack	639 mm
Standover height	803 mm
Wheel size	29

Geometry · SM · 29″ · POS.9 Steep

Seat tube	380 mm
Effective top tube	580 mm
Head tube	90 mm
Head-tube angle	66.3°
Seat-tube angle	77.3°
Chainstay / rear center	436 - 447
Wheelbase	1181 mm
Bottom-bracket drop	28 mm
Reach	444 mm
Stack	606 mm
Standover height	756 mm
Wheel size	29

Geometry · MD · 29″ · POS.9 Steep

Seat tube	420 mm
Effective top tube	607 mm
Head tube	95 mm
Head-tube angle	66.2°
Seat-tube angle	77.2°
Chainstay / rear center	436 - 447
Wheelbase	1208 mm
Bottom-bracket drop	28 mm
Reach	468 mm
Stack	610 mm
Standover height	804 mm
Wheel size	29

Geometry · LG · 29″ · POS.9 Steep

Seat tube	445 mm
Effective top tube	635 mm
Head tube	110 mm
Head-tube angle	66.2°
Seat-tube angle	77.2°
Chainstay / rear center	436 - 447
Wheelbase	1240 mm
Bottom-bracket drop	28 mm
Reach	493 mm
Stack	624 mm
Standover height	804 mm
Wheel size	29

Geometry · XL · 29″ · POS.9 Steep

Seat tube	480 mm
Effective top tube	668 mm
Head tube	125 mm
Head-tube angle	66.2°
Seat-tube angle	77.2°
Chainstay / rear center	436 - 447
Wheelbase	1276 mm
Bottom-bracket drop	28 mm
Reach	523 mm
Stack	637 mm
Standover height	804 mm
Wheel size	29

Geometry · XS · 27.5″ · POS.1 Slack

Seat tube	355 mm
Effective top tube	551 mm
Head tube	90 mm
Head-tube angle	65.3°
Seat-tube angle	76.3°
Chainstay / rear center	428 - 439
Wheelbase	1134 mm
Bottom-bracket drop	27 mm
Reach	408 mm
Stack	585 mm
Standover height	754 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.1 Slack

Seat tube	380 mm
Effective top tube	578 mm
Head tube	100 mm
Head-tube angle	65.3°
Seat-tube angle	76.3°
Chainstay / rear center	428 - 439
Wheelbase	1164 mm
Bottom-bracket drop	27 mm
Reach	433 mm
Stack	594 mm
Standover height	754 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.2

Seat tube	355 mm
Effective top tube	550 mm
Head tube	90 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	428 - 439
Wheelbase	1134 mm
Bottom-bracket drop	24 mm
Reach	410 mm
Stack	584 mm
Standover height	756 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.2

Seat tube	380 mm
Effective top tube	578 mm
Head tube	100 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Chainstay / rear center	428 - 439
Wheelbase	1163 mm
Bottom-bracket drop	24 mm
Reach	435 mm
Stack	593 mm
Standover height	756 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.3

Seat tube	355 mm
Effective top tube	550 mm
Head tube	90 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	427 - 438
Wheelbase	1134 mm
Bottom-bracket drop	22 mm
Reach	412 mm
Stack	582 mm
Standover height	757 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.3

Seat tube	380 mm
Effective top tube	577 mm
Head tube	100 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	427 - 438
Wheelbase	1163 mm
Bottom-bracket drop	22 mm
Reach	437 mm
Stack	591 mm
Standover height	757 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.4

Seat tube	355 mm
Effective top tube	550 mm
Head tube	90 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	427 - 438
Wheelbase	1134 mm
Bottom-bracket drop	21 mm
Reach	412 mm
Stack	582 mm
Standover height	757 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.4

Seat tube	380 mm
Effective top tube	577 mm
Head tube	100 mm
Head-tube angle	65.7°
Seat-tube angle	76.7°
Chainstay / rear center	427 - 438
Wheelbase	1163 mm
Bottom-bracket drop	21 mm
Reach	437 mm
Stack	591 mm
Standover height	757 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.5 Neutral

Seat tube	355 mm
Effective top tube	549 mm
Head tube	90 mm
Head-tube angle	65.9°
Seat-tube angle	76.9°
Chainstay / rear center	427 - 438
Wheelbase	1133 mm
Bottom-bracket drop	19 mm
Reach	414 mm
Stack	581 mm
Standover height	758 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.5 Neutral

Seat tube	380 mm
Effective top tube	577 mm
Head tube	100 mm
Head-tube angle	65.9°
Seat-tube angle	76.9°
Chainstay / rear center	427 - 438
Wheelbase	1162 mm
Bottom-bracket drop	19 mm
Reach	439 mm
Stack	589 mm
Standover height	758 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.6

Seat tube	355 mm
Effective top tube	549 mm
Head tube	90 mm
Head-tube angle	66.1°
Seat-tube angle	77.1°
Chainstay / rear center	426 - 437
Wheelbase	1133 mm
Bottom-bracket drop	16 mm
Reach	417 mm
Stack	581 mm
Standover height	759 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.6

Seat tube	380 mm
Effective top tube	577 mm
Head tube	100 mm
Head-tube angle	66.1°
Seat-tube angle	77.1°
Chainstay / rear center	426 - 437
Wheelbase	1162 mm
Bottom-bracket drop	16 mm
Reach	441 mm
Stack	589 mm
Standover height	759 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.7

Seat tube	355 mm
Effective top tube	549 mm
Head tube	90 mm
Head-tube angle	66.1°
Seat-tube angle	77.1°
Chainstay / rear center	426 - 437
Wheelbase	1133 mm
Bottom-bracket drop	16 mm
Reach	417 mm
Stack	579 mm
Standover height	759 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.7

Seat tube	380 mm
Effective top tube	576 mm
Head tube	100 mm
Head-tube angle	66.1°
Seat-tube angle	77.1°
Chainstay / rear center	426 - 437
Wheelbase	1162 mm
Bottom-bracket drop	16 mm
Reach	441 mm
Stack	588 mm
Standover height	759 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.8

Seat tube	355 mm
Effective top tube	548 mm
Head tube	90 mm
Head-tube angle	66.3°
Seat-tube angle	77.3°
Chainstay / rear center	426 - 437
Wheelbase	1132 mm
Bottom-bracket drop	13 mm
Reach	419 mm
Stack	577 mm
Standover height	760 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.8

Seat tube	380 mm
Effective top tube	576 mm
Head tube	100 mm
Head-tube angle	66.3°
Seat-tube angle	77.3°
Chainstay / rear center	426 - 437
Wheelbase	1162 mm
Bottom-bracket drop	13 mm
Reach	444 mm
Stack	586 mm
Standover height	760 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.9 Steep

Seat tube	355 mm
Effective top tube	548 mm
Head tube	90 mm
Head-tube angle	66.6°
Seat-tube angle	77.6°
Chainstay / rear center	425 - 436
Wheelbase	1132 mm
Bottom-bracket drop	11 mm
Reach	421 mm
Stack	576 mm
Standover height	761 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.9 Steep

Seat tube	380 mm
Effective top tube	575 mm
Head tube	100 mm
Head-tube angle	66.6°
Seat-tube angle	77.6°
Chainstay / rear center	425 - 436
Wheelbase	1161 mm
Bottom-bracket drop	11 mm
Reach	446 mm
Stack	584 mm
Standover height	761 mm
Wheel size	27.5

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 7, 2026.