Rocky Mountain Altitude C99 SRAM

Name: Rocky Mountain Altitude C99 SRAM
Brand: Rocky Mountain

2024 MountainEnduro Manufacturer page

Rocky Mountain Altitude C99 SRAM, color Black / Purple/silver

Last known price: $10,999

Prices shown first for United States
Travel: 170 / 160 mm Fork / rear shock
Wheels: 27.5″, 29″ / 27.5″, 29″
Drivetrain: 1 × 12 32t / 10–52t
Gear range: 520%
Weight: 15.2 kg 33.5 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM Slack 152.5–167
SM 152.5–167
SM Steep 152.5–167
MD Slack 162.5–177.5
MD 162.5–177.5
MD Steep 162.5–177.5
MD Slack 162.5–177.5
MD 162.5–177.5
MD Steep 162.5–177.5
LG Slack 172.5–188
LG 172.5–188
LG Steep 172.5–188
LG Slack 172.5–188
LG 172.5–188
LG Steep 172.5–188
XL Slack 183–198
XL 183–198
XL Steep 183–198
XL Slack 183–198
XL 183–198
XL Steep 183–198

Components

21 of 22 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

SMOOTHWALL™ Carbon | Full Sealed Cartridge Bearings | BSA Bottom Bracket | Internal Cable Routing | 2-Bolt ISCG05 Tabs | RIDE-4™ Adjustable Geometry |160mm Travel. SMOOTHWALL™ Carbon Rear Triangle Not identified

RIDE-4

Suspension

2 parts

Drivetrain

7 parts

Brakes

1 part

Brakes
- SRAM Code RSC

Wheels and tires

5 parts

Cockpit and contact points

6 parts

Sizes and geometry

21 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD Steep

Table

Reach 458mm

Stack 630mm

Wheelbase 1242mm

Head angle 63.8°

Seat angle 77.8°

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 21 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	424	430	433	450	455	458	450	455	458	475	480	483	475	480	483	505	510	513	505	510	513
Stackmm	599	599	599	630	630	630	630	630	630	639	639	639	639	639	640	653	653	653	653	653	653
Top tube lengthmm	553	553	553	584	584	584	584	584	584	610	610	610	610	610	610	642	642	642	642	642	642
Seat tube lengthmm	365	365	365	410	410	410	410	410	410	440	440	440	440	440	440	470	470	470	470	470	470
Head tube lengthmm	100	100	100	105	105	105	105	105	105	115	115	115	115	115	115	130	130	130	130	130	130
Head tube angle	63°	63.5°	63.8°	62.9°	63.4°	63.7°	63°	63.5°	63.8°	62.9°	63.4°	63.7°	63°	63.5°	63.8°	62.9°	63.4°	63.7°	63°	63.5°	63.8°
Seat tube angle	77°	77.5°	77.8°	77°	77.4°	77.7°	77°	77.5°	77.8°	77°	77.4°	77.7°	77°	77.5°	77.8°	77°	77.4°	77.7°	77°	77.5°	77.8°
Chainstay lengthmm	430	430	430	440	440	440	440	440	440	450	450	450	450	450	450	450	450	450	450	450	450
Wheelbasemm	1189	1188	1188	1243	1242	1241	1244	1243	1242	1282	1281	1281	1283	1282	1282	1319	1318	1317	1319	1319	1319
Front centermm	760	759	758	804	803	802	807	805	803	833	832	832	835	834	833	870	869	868	871	871	870
Bottom bracket dropmm	24	17	13	29	22	18	38	31	27	29	22	18	38	31	27	29	22	18	38	31	27
Bottom bracket heightmm	331	338	342	—	—	—	336	343	347	—	—	—	336	343	347	—	—	—	336	343	347
Standover heightmm	760	765	768	791	796	798	792	796	798	797	803	806	798	803	806	808	814	817	809	814	817
Fork rakemm	38	34	33	41	39	37	48	45	43	41	38	37	48	45	43	41	38	36	47	45	44
Trailmm	138	139	138	146	144	144	137	136	136	146	145	144	137	136	136	146	145	145	138	136	135
Stack/reach ratio	1.41	1.39	1.38	1.40	1.39	1.38	1.40	1.39	1.38	1.35	1.33	1.32	1.35	1.33	1.33	1.29	1.28	1.27	1.29	1.28	1.27

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: Carbon
Bicycle weight: 15.2 kg

33.5 lb

Suspension

Suspension configuration: Full suspension
Front travel: 170 mm
Rear travel: 160 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 17.9 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Different sizes
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Power meter: SRAM X0 Transmission Alloy | 32T | DUB Spindle | Power Meter Sensor | Crankarm Length: XS -SM = 165mm | MD - XL = 170mm
Tire width: 2.5″
Wheel material: Carbon
Wheel size: 27.5″, 29″

Technical analysis

3 measures

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

Front travel

170 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2024
Sample: 1,578 bicycles with this information
Coverage: 98.0% of the class

Rear travel

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2024
Sample: 1,329 bicycles with this information
Coverage: 82.5% of the class

Shifting

Electronic

439 of 1,609 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2024
Sample: 1,609 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 35.5 km/h

Total gear range 520%

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: 17.9–92.8 gear inches

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 2024 builds

Differences across 2024 builds
Specification	This bicycle Rocky Mountain Altitude C99 SRAM	Rocky Mountain Altitude A50 Shimano	Rocky Mountain Altitude A70 Coil Shimano	Rocky Mountain Altitude Alloy 50	Rocky Mountain Altitude Alloy 70 Coil	Rocky Mountain Altitude C50 Shimano
Frame
Frame material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Carbon
Bicycle weight	15.2 kg	Not informed	17.1 kg	Not informed	17 kg	Not informed
Drivetrain
Rear sprockets	12	12	Not informed	12	Not informed	12
Largest sprocket	52	51	51	51	51	51
Lowest gear	17.9 in	18.2 in	18.2 in	18.2 in	18.2 in	18.2 in
Cockpit
Derailleur hanger	UDH	Not informed	Not informed	Not informed	Not informed	Not informed
Shifting	Electronic	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical
Other specifications
Power meter	SRAM X0 Transmission Alloy \| 32T \| DUB Spindle \| Power Meter Sensor \| Crankarm Length: XS -SM = 165mm \| MD - XL = 170mm	Not informed	Not informed	Not informed	Not informed	Not informed
Travel	Additional specification: Adjustment kind: automaticConfiguration: Full suspensionFront: Travel: 170 mmRear: Travel: 160 mm	Configuration: Full suspensionFront: Travel: 170 mmRear: Travel: 160 mm	Configuration: Full suspensionFront: Travel: 170 mmRear: Travel: 160 mm	Configuration: Full suspensionFront: Travel: 170 mmRear: Travel: 160 mm	Configuration: Full suspensionFront: Travel: 170 mmRear: Travel: 160 mm	Configuration: Full suspensionFront: Travel: 170 mmRear: Travel: 160 mm
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Rear shock spring	Not informed	Not informed	Coil	Not informed	Coil	Not informed