Bicycle Archive · Specification report

2025 Rocky Mountain Instinct Carbon 50

Velopedia Archive ID 900004790

Overview

Model year	2025
Brand	Rocky Mountain
Model	Instinct Carbon 50
Bicycle type	Mountain
Archive ID	900004790
Original MSRP	$5,499.00
Colors	Blue/Blue
Sizes	XS; SM; MD; LG; XL

Frameset

Frame construction	SMOOTHWALL™ Carbon \| Penalty Box 2.0 Storage \| 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
Frame material	Carbon Fiber
Fork	RockShox Lyrik Select 150mm \| Charger RC Damper \| 27.5 = 37mm Offset \| 29 = 42mm Offset
Rear shock	Fox Float X Performance \| Sealed Bearing Eyelet \| 20x8mm F Hardware \| XS - SM = 190x45mm \| MD - LG - XL = 210x52.5mm \| Size-Specific tune in FAQ

Drivetrain

Shifters	Shimano XT
Rear derailleur	Shimano XT
Crankset	Race Face Aeffect Cinch \| 32T \| 24mm Spindle \| Crankarm Length: XS - SM = 165mm \| MD - XL = 170mm
Bottom bracket	Shimano SM-BBMT500
Cassette	Shimano SLX 10-51T 12spd
Chain	Shimano M6100

Brakes

Brakes	Shimano MT6120 4 Piston \| Metal Pads

Cockpit & contact points

Headset	FSA Orbit NO.85 Reach Adjust \| 0mm Cups Installed \| +/- 5mm Cups Included \| Sealed Stainless 36°x45° Bearings \| 30.2mm x 41mm x 6.5mm Upper \| 40mm x 51.8mm x 8.0mm Lower \| 1.5" Crown Race
Handlebar	Rocky Mountain AM \| 760mm Width \| 25mm Rise \| 9° Backsweep \| 5° Upsweep \| 35 Clamp
Stem	Rocky Mountain 35 AM \| 0° Rise \| All Sizes = 40mm
Saddle	WTB Volt Race 142 \| Cromoly rails
Seatpost	X Fusion Manic Composite 30.9mm \| XS = 125mm \| SM = 150mm \| MD = 170mm \| LG - XL = 200mm

Wheels & tires

Hubs	Front: Novatec D791SB Sealed Boost 15mm; Rear: DT Swiss 370 Boost 148mm \| 18T Star-Ratchet
Rims	WTB KOM Team i30 TCS 2.0 \| 28H \| Tubeless Set Up \| Sealant Incl
Spokes	2.0 Stainless
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	27.5"; 29"

Geometry · SM · 29″ · POS.1 Slack

Seat tube	365 mm
Effective top tube	572 mm
Head tube	100 mm
Head-tube angle	63.5°
Seat-tube angle	76.5°
Chainstay / rear center	440 - 450
Wheelbase	1198 mm
Bottom-bracket drop	44 mm
Reach	423 mm
Stack	572 mm
Standover height	760 mm
Wheel size	29

Geometry · MD · 29″ · POS.1 Slack

Seat tube	410 mm
Effective top tube	621 mm
Head tube	110 mm
Head-tube angle	63.5°
Seat-tube angle	76.5°
Chainstay / rear center	440 - 450
Wheelbase	1227 mm
Bottom-bracket drop	44 mm
Reach	449 mm
Stack	599 mm
Standover height	798 mm
Wheel size	29

Geometry · LG · 29″ · POS.1 Slack

Seat tube	440 mm
Effective top tube	640 mm
Head tube	125 mm
Head-tube angle	63.5°
Seat-tube angle	76.5°
Chainstay / rear center	440 - 450
Wheelbase	1259 mm
Bottom-bracket drop	44 mm
Reach	474 mm
Stack	628 mm
Standover height	796 mm
Wheel size	29

Geometry · XL · 29″ · POS.1 Slack

Seat tube	470 mm
Effective top tube	649 mm
Head tube	135 mm
Head-tube angle	63.5°
Seat-tube angle	76.5°
Chainstay / rear center	440 - 450
Wheelbase	1293 mm
Bottom-bracket drop	44 mm
Reach	504 mm
Stack	659 mm
Standover height	792 mm
Wheel size	29

Geometry · SM · 29″ · POS.2

Seat tube	365 mm
Effective top tube	572 mm
Head tube	100 mm
Head-tube angle	63.7°
Seat-tube angle	76.7°
Chainstay / rear center	440 - 450
Wheelbase	1198 mm
Bottom-bracket drop	40 mm
Reach	427 mm
Stack	572 mm
Standover height	762 mm
Wheel size	29

Geometry · MD · 29″ · POS.2

Seat tube	410 mm
Effective top tube	622 mm
Head tube	110 mm
Head-tube angle	63.7°
Seat-tube angle	76.7°
Chainstay / rear center	440 - 450
Wheelbase	1227 mm
Bottom-bracket drop	40 mm
Reach	452 mm
Stack	599 mm
Standover height	799 mm
Wheel size	29

Geometry · LG · 29″ · POS.2

Seat tube	440 mm
Effective top tube	638 mm
Head tube	125 mm
Head-tube angle	63.7°
Seat-tube angle	76.7°
Chainstay / rear center	440 - 450
Wheelbase	1259 mm
Bottom-bracket drop	40 mm
Reach	477 mm
Stack	628 mm
Standover height	798 mm
Wheel size	29

Geometry · XL · 29″ · POS.2

Seat tube	470 mm
Effective top tube	644 mm
Head tube	135 mm
Head-tube angle	63.7°
Seat-tube angle	76.7°
Chainstay / rear center	440 - 450
Wheelbase	1293 mm
Bottom-bracket drop	40 mm
Reach	507 mm
Stack	659 mm
Standover height	794 mm
Wheel size	29

Geometry · SM · 29″ · POS.3

Seat tube	365 mm
Effective top tube	572 mm
Head tube	100 mm
Head-tube angle	64°
Seat-tube angle	77°
Chainstay / rear center	440 - 450
Wheelbase	1198 mm
Bottom-bracket drop	36 mm
Reach	430 mm
Stack	572 mm
Standover height	763 mm
Wheel size	29

Geometry · MD · 29″ · POS.3

Seat tube	410 mm
Effective top tube	622 mm
Head tube	110 mm
Head-tube angle	64°
Seat-tube angle	77°
Chainstay / rear center	440 - 450
Wheelbase	1227 mm
Bottom-bracket drop	36 mm
Reach	455 mm
Stack	599 mm
Standover height	794 mm
Wheel size	29

Geometry · LG · 29″ · POS.3

Seat tube	440 mm
Effective top tube	636 mm
Head tube	125 mm
Head-tube angle	64°
Seat-tube angle	77°
Chainstay / rear center	440 - 450
Wheelbase	1258 mm
Bottom-bracket drop	36 mm
Reach	480 mm
Stack	627 mm
Standover height	799 mm
Wheel size	29

Geometry · XL · 29″ · POS.3

Seat tube	470 mm
Effective top tube	645 mm
Head tube	135 mm
Head-tube angle	64°
Seat-tube angle	77°
Chainstay / rear center	440 - 450
Wheelbase	1293 mm
Bottom-bracket drop	36 mm
Reach	510 mm
Stack	659 mm
Standover height	796 mm
Wheel size	29

Geometry · SM · 29″ · POS.4 Steep

Seat tube	365 mm
Effective top tube	571 mm
Head tube	100 mm
Head-tube angle	64.3°
Seat-tube angle	77.3°
Chainstay / rear center	440 - 450
Wheelbase	1197 mm
Bottom-bracket drop	32 mm
Reach	437 mm
Stack	571 mm
Standover height	765 mm
Wheel size	29

Geometry · MD · 29″ · POS.4 Steep

Seat tube	410 mm
Effective top tube	623 mm
Head tube	110 mm
Head-tube angle	64.3°
Seat-tube angle	77.3°
Chainstay / rear center	440 - 450
Wheelbase	1227 mm
Bottom-bracket drop	32 mm
Reach	458 mm
Stack	599 mm
Standover height	801 mm
Wheel size	29

Geometry · LG · 29″ · POS.4 Steep

Seat tube	440 mm
Effective top tube	634 mm
Head tube	125 mm
Head-tube angle	64.3°
Seat-tube angle	77.3°
Chainstay / rear center	440 - 450
Wheelbase	1258 mm
Bottom-bracket drop	32 mm
Reach	483 mm
Stack	626 mm
Standover height	800 mm
Wheel size	29

Geometry · XL · 29″ · POS.4 Steep

Seat tube	470 mm
Effective top tube	645 mm
Head tube	135 mm
Head-tube angle	64.3°
Seat-tube angle	77.3°
Chainstay / rear center	440 - 450
Wheelbase	1293 mm
Bottom-bracket drop	32 mm
Reach	513 mm
Stack	659 mm
Standover height	798 mm
Wheel size	29

Geometry · XS · 27.5″ · POS.1 Slack

Seat tube	355 mm
Effective top tube	540 mm
Head tube	100 mm
Head-tube angle	63.5°
Seat-tube angle	76.5°
Chainstay / rear center	430 - 440
Wheelbase	1150 mm
Bottom-bracket drop	27 mm
Reach	398 mm
Stack	585 mm
Standover height	757 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.1 Slack

Seat tube	365 mm
Effective top tube	567 mm
Head tube	110 mm
Head-tube angle	63.5°
Seat-tube angle	76.5°
Chainstay / rear center	430 - 440
Wheelbase	1179 mm
Bottom-bracket drop	27 mm
Reach	423 mm
Stack	594 mm
Standover height	753 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.2

Seat tube	355 mm
Effective top tube	540 mm
Head tube	100 mm
Head-tube angle	63.7°
Seat-tube angle	76.7°
Chainstay / rear center	430 - 440
Wheelbase	1150 mm
Bottom-bracket drop	26 mm
Reach	399 mm
Stack	584 mm
Standover height	757 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.2

Seat tube	365 mm
Effective top tube	567 mm
Head tube	110 mm
Head-tube angle	63.7°
Seat-tube angle	76.7°
Chainstay / rear center	430 - 440
Wheelbase	1179 mm
Bottom-bracket drop	26 mm
Reach	424 mm
Stack	593 mm
Standover height	753 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.3

Seat tube	355 mm
Effective top tube	540 mm
Head tube	100 mm
Head-tube angle	64°
Seat-tube angle	77°
Chainstay / rear center	430 - 440
Wheelbase	1149 mm
Bottom-bracket drop	19 mm
Reach	405 mm
Stack	582 mm
Standover height	759 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.3

Seat tube	365 mm
Effective top tube	567 mm
Head tube	110 mm
Head-tube angle	64°
Seat-tube angle	77°
Chainstay / rear center	430 - 440
Wheelbase	1178 mm
Bottom-bracket drop	19 mm
Reach	430 mm
Stack	591 mm
Standover height	756 mm
Wheel size	27.5

Geometry · XS · 27.5″ · POS.4 Steep

Seat tube	355 mm
Effective top tube	539 mm
Head tube	100 mm
Head-tube angle	64.3°
Seat-tube angle	77.3°
Chainstay / rear center	430 - 440
Wheelbase	1148 mm
Bottom-bracket drop	15 mm
Reach	408 mm
Stack	582 mm
Standover height	760 mm
Wheel size	27.5

Geometry · SM · 27.5″ · POS.4 Steep

Seat tube	365 mm
Effective top tube	567 mm
Head tube	110 mm
Head-tube angle	64.3°
Seat-tube angle	77.3°
Chainstay / rear center	430 - 440
Wheelbase	1177 mm
Bottom-bracket drop	15 mm
Reach	433 mm
Stack	591 mm
Standover height	757 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 8, 2026.