Rocky Mountain Reaper 27.5

2019 YouthMountain youth

Last known price: $2,849

Prices shown first for United States
Travel: 130 / 130 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 11 30t / 11–46t
Gear range: 418%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

27.5" Steep
27.5" Slack

The manufacturer did not publish rider heights for these sizes.

Components

19 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

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

Brakes

2 parts

Brake levers
- Shimano BL-MT500
BL-MT500
Brakes
- Shimano BR-MT500
BR-MT500

Wheels and tires

5 parts

Cockpit and contact points

6 parts

Grips
- Rocky Mountain
Handlebar
- Rocky Mountain
Headset
- FSA NO.57E
Saddle
- WTB Volt
Seatpost

XFusion Manic 30.9mm Not identified
Stem
- Rocky Mountain

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 27.5" Steep

Table

Reach 397mm

Stack 572mm

Wheelbase 1098mm

Head angle 67.6°

Seat angle 75.6°

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	397	385
Stackmm	572	580
Top tube lengthmm	544	547
Seat tube lengthmm	356	356
Head tube lengthmm	100	100
Head tube angle	67.6°	66.4°
Seat tube angle	75.6°	74.4°
Chainstay lengthmm	424	426
Wheelbasemm	1098	1100
Front centermm	674	676
Bottom bracket dropmm	13	28
Standover heightmm	797	792
Fork rakemm	43	45
Stack/reach ratio	1.44	1.51

Not published by the manufacturer: Bottom bracket height, Trail, 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

Suspension

Suspension configuration: Full suspension
Front travel: 130 mm
Rear travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 17.9 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

Bottom bracket standard: BB86/BB92
Tire width: 2.3″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

2 measures

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

Lowest gear

17.9 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2019
Sample: 91 bicycles with this information
Coverage: 81.2% of the class

Highest gear

75.0 gear inches

This value is above the central range for this class.

Cohort: Youth / Mountain youth Model year: 2019
Sample: 91 bicycles with this information
Coverage: 81.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.9 km/h
Highest gear: 28.7 km/h

Total gear range 418%

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: 17.9–75.0 gear inches
Class reference (p10–p90): 17.1–75.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2019
Lowest gear: 91 bicycles with this information, 81.2% of the class
Highest gear: 91 bicycles with this information, 81.2% 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 2019 builds

Differences across 2019 builds
Specification	This bicycle Rocky Mountain Reaper 27.5	Rocky Mountain Reaper 24	Rocky Mountain Reaper 26
Suspension
Front travel	130 mm	120 mm	120 mm
Drivetrain
Smallest chainring	30	28	30
Largest chainring	30	28	30
Rear sprockets	11	10	10
Largest sprocket	46	42	42
Lowest gear	17.9 in	17.3 in	18.6 in
Highest gear	75.0 in	66.2 in	70.9 in
Wheels
Wheel configuration	Same size	Wheel options	Wheel options
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost
Other specifications
Tire width	2.3″	2.1″	2.35″
Wheel size	27.5″	24″ / 26″	24″ / 26″