Rocky Mountain Reaper 27.5

2021 MountainTrail Manufacturer page

Rocky Mountain Reaper 27.5, color Beige / Orange

Last known price: $2,819

Prices shown first for United States
Travel: 140 / 140 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 11 30t / 11–51t
Gear range: 464%
Weight: 14.26 kg 31.4 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

kids Steep
kids Slack

The manufacturer did not publish rider heights for these sizes.

Components

19 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 + Suspension Rate Not identified

RIDE-9

Suspension

2 parts

Drivetrain

6 parts

Bottom bracket
- Shimano BB-MT500
BB-MT500
Cassette
- Shimano Deore CS-M5100 11 speeds 11–51t
CS-M5100
Chain
- KMC X11 11 speeds
Crankset
- Race Face Ride 30t
Rear derailleur
- Shimano Deore RD-M5100 11 speeds
RD-M5100
Shifters
- Shimano Deore

Brakes

1 part

Brakes
- Tektro
HD-M286

Wheels and tires

5 parts

Cockpit and contact points

6 parts

Sizes and geometry

2 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size kids Steep

Table

Reach 383mm

Stack 581mm

Wheelbase 1101mm

Head angle 66.3°

Seat angle 74.3°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 2 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	383	371
Stackmm	581	589
Top tube lengthmm	547	550
Seat tube lengthmm	359	359
Head tube lengthmm	100	100
Head tube angle	66.3°	65.2°
Seat tube angle	74.3°	73.2°
Chainstay lengthmm	424	427
Wheelbasemm	1101	1104
Front centermm	677	678
Bottom bracket dropmm	4	19
Bottom bracket heightmm	351	336
Standover heightmm	821	815
Fork rakemm	37	39
Trailmm	116	121
Stack/reach ratio	1.52	1.59

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: 14.26 kg

31.4 lb

Suspension

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

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 51
Lowest gear: 16.2 in
Highest gear: 75.0 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″

Technical analysis

4 measures

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

Front travel

140 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,324 bicycles with this information
Coverage: 98.1% of the class

Lowest gear

16.2 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Highest gear

75.0 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Shifting

Mechanical

53 of 1,346 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,346 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.2 km/h
Highest gear: 28.7 km/h

Total gear range 464%

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: 16.2–75.0 gear inches
Class reference (p10–p90): 16.9–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2021
Lowest gear: 1137 bicycles with this information, 84.2% of the class
Highest gear: 1137 bicycles with this information, 84.2% 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 2021 builds
Specification	This bicycle Rocky Mountain Reaper 27.5	Rocky Mountain Reaper 24	Rocky Mountain Reaper 26
Frame
Bicycle weight	14.26 kg	12.8 kg	13 kg
Suspension
Front travel	140 mm	130 mm	130 mm
Drivetrain
Smallest chainring	30	28	30
Largest chainring	30	28	30
Rear sprockets	11	10	10
Largest sprocket	51	42	46
Lowest gear	16.2 in	16.0 in	17.0 in
Highest gear	75.0 in	61.1 in	70.9 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Tire width	2.5″	2.25″	2.35″
Rear travel	140 mm	130 mm	130 mm
Wheel size	27.5″	24″	26″
Bottom bracket standard	Not informed	BB86/BB92	Not informed

Changes since 2020
Specification	2020 Rocky Mountain Reaper 27.5	This bicycle Rocky Mountain Reaper 27.5
Frame
Bicycle weight	13.8 kg	14.26 kg
Suspension
Front travel	130 mm	140 mm
Drivetrain
Rear sprockets	12	11
Largest sprocket	50	51
Lowest gear	16.5 in	16.2 in
Other specifications
Bottom bracket standard	BB86/BB92	Not informed
Tire width	2.3″	2.5″
Fork spring	Not informed	Air