Rocky Mountain Instinct A50 Shimano

Name: Rocky Mountain Instinct A50 Shimano
Brand: Rocky Mountain

2023 MountainTrail Manufacturer page

Rocky Mountain Instinct A50 Shimano, color Blue / Orange

Last known price: $4,599

Prices shown first for United States
Travel: 150 / 140 mm Fork / rear shock
Wheels: 27.5″, 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Weight: 15.3 kg 33.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS Steep 142.5–157.5
XS Neutral 142.5–157.5
XS Slack 142.5–157.5
SM Steep 155–167.5
SM Neutral 155–167.5
SM Slack 155–167.5
SM Steep 157.5–170
SM Neutral 157.5–170
SM Slack 157.5–170
MD Steep 167.5–177.5
MD Neutral 167.5–177.5
MD Slack 167.5–177.5
LG Steep 175–188
LG Neutral 175–188
LG Slack 175–188
XL Steep 185.5–198
XL Neutral 185.5–198
XL Slack 185.5–198

Components

20 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

FORM™ Alloy | Full Sealed Cartridge Bearings | Press Fit BB | Internal Cable Routing | 2-Bolt ISCG05 Tabs | RIDE-9™ Adjustable Geometry | 2 Position Axle | 140mm Travel. FORM™ Alloy Rear Triangle Not identified

RIDE-9

Suspension

2 parts

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano

Wheels and tires

5 parts

Cockpit and contact points

6 parts

Sizes and geometry

18 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM Slack

Table

Reach 430mm

Stack 615mm

Wheelbase 1182mm

Head angle 65.0°

Seat angle 76.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 18 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	421	414	408	446	439	433	444	437	430	468	462	456	493	487	481	523	517	511
Stackmm	576	581	585	584	589	594	606	611	615	610	615	619	624	628	633	637	642	646
Top tube lengthmm	548	549	551	575	577	578	580	582	583	607	608	609	635	636	638	668	670	671
Seat tube lengthmm	355	355	355	380	380	380	380	380	380	420	420	420	445	445	445	480	480	480
Head tube lengthmm	90	90	90	100	100	100	90	90	90	95	95	95	110	110	110	125	125	125
Head tube angle	66.6°	65.9°	65.3°	66.6°	65.9°	65.3°	66.3°	65.7°	65°	66.2°	65.7°	65.1°	66.2°	65.7°	65.1°	66.2°	65.7°	65.1°
Seat tube angle	77.6°	76.9°	76.3°	77.6°	76.9°	76.3°	77.3°	76.7°	76°	77.2°	76.7°	76.1°	77.2°	76.7°	76.1°	77.2°	76.7°	76.1°
Chainstay lengthmm	425	427	428	425	427	428	436	437	438	436	437	438	436	437	438	436	437	438
Wheelbasemm	1132	1133	1134	1161	1162	1164	1181	1182	1182	1208	1209	1210	1240	1240	1241	1276	1277	1277
Front centermm	707	707	707	736	736	737	746	747	748	773	774	775	805	805	806	841	842	842
Bottom bracket dropmm	11	19	27	11	19	27	28	37	45	28	36	43	28	36	43	28	36	43
Bottom bracket heightmm	344	336	328	344	336	328	346	337	329	346	338	331	346	338	331	346	338	331
Standover heightmm	761	758	754	761	758	754	756	749	742	804	801	798	804	801	798	804	801	798
Fork rakemm	38	37	38	39	38	39	44	46	46	44	46	46	45	46	46	45	46	46
Trailmm	112	118	122	111	117	121	116	119	124	117	119	123	116	119	123	116	119	123
Stack/reach ratio	1.37	1.40	1.43	1.31	1.34	1.37	1.37	1.40	1.43	1.30	1.33	1.36	1.27	1.29	1.32	1.22	1.24	1.26

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 15.3 kg

33.7 lb

Suspension

Suspension configuration: Full suspension
Front travel: 150 mm
Rear travel: 140 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 18.2 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

4 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

150 mm

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 2,192 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

18.2 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 1,625 bicycles with this information
Coverage: 72.2% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2023
Sample: 1,625 bicycles with this information
Coverage: 72.2% of the class

Shifting

Mechanical

359 of 2,248 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2023
Sample: 2,248 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 35.5 km/h

Total gear range 510%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 18.2–92.8 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2023
Lowest gear: 1625 bicycles with this information, 72.2% of the class
Highest gear: 1625 bicycles with this information, 72.2% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2023 builds

Differences across 2023 builds
Specification	This bicycle Rocky Mountain Instinct A50 Shimano	Rocky Mountain Instinct A10 Shimano	Rocky Mountain Instinct A30 Shimano	Rocky Mountain Instinct Alloy 10	Rocky Mountain Instinct Alloy 30	Rocky Mountain Instinct Alloy 50
Frame
Bicycle weight	15.3 kg	16.2 kg	15.76 kg	16.2 kg	Not informed	Not informed
Drivetrain
Rear sprockets	12	11	12	11	12	12
Smallest sprocket	10	11	10	11	10	10
Highest gear	92.8 in	84.4 in	92.8 in	84.4 in	92.8 in	92.8 in
Other specifications
Tire width	2.5″	2.4″	2.5″	2.4″	2.5″	2.5″
Bottom bracket standard	Not informed	BB86/BB92	Not informed	BB86/BB92	Not informed	Not informed