Devinci Riff Altus 8s

2021 MountainCross-country

Fork travel: 100 mm
Wheels: 29″
Drivetrain: 1 × 8 28t / 11–40t
Gear range: 364%
Weight: 14.82 kg 32.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

15 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

Aluminum Optimum G02 Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Cassette
- SunRace 11–40t
Chain
- KMC
Chain guide

CD-04D Not identified

CD-04D
Crankset

Alloy 28T Narrow Wide Not identified
Rear derailleur
- Shimano Altus RD-M370 9 speeds
RD-M370
Shifters
- Shimano Altus SL-M315
SL-M315

Brakes

2 parts

Brakes
- Tektro MD-M280
MD-M280
Disc rotors

Stainless 160mm Not identified

Wheels and tires

5 parts

Cockpit and contact points

7 parts

Grips

Kraton Not identified
Handlebar
- Ritchey Comp
Headset

CH-6201-1 Zero Stack Not identified

CH-6201
Pedals
- Wellgo
Saddle
- Devinci
Seatpost
- Devinci
Stem
- Ritchey Comp

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 399mm

Stack 621mm

Wheelbase 1107mm

Head angle 69.5°

Seat angle 72.5°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	378	388	399	410	424
Stackmm	611	611	621	630	649
Top tube lengthmm	565	575	595	615	635
Seat tube lengthmm	380	400	450	480	530
Head tube lengthmm	100	100	110	120	140
Head tube angle	69.5°	69.5°	69.5°	69.5°	69.5°
Seat tube angle	73°	73°	72.5°	72°	72°
Chainstay lengthmm	445	445	445	445	445
Wheelbasemm	1082	1092	1107	1121	1142
Front centermm	643	653	668	682	703
Bottom bracket dropmm	57	57	57	57	57
Bottom bracket heightmm	317.5	317.5	317.5	317.5	317.5
Standover heightmm	690	704	740	758	790
Fork rakemm	52	52	52	52	52
Trailmm	85	85	85	85	85
Stack/reach ratio	1.62	1.58	1.56	1.54	1.53

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: 14.82 kg

32.7 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 40
Lowest gear: 20.3 in
Highest gear: 73.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,256 bicycles with this information
Coverage: 91.6% of the class

Lowest gear

20.3 gear inches

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Highest gear

73.8 gear inches

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Shifting

Mechanical

89 of 1,368 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,368 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.8 km/h
Highest gear: 28.3 km/h

Total gear range 364%

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: 20.3–73.8 gear inches
Class reference (p10–p90): 17.4–100.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2021
Lowest gear: 1101 bicycles with this information, 80.3% of the class
Highest gear: 1101 bicycles with this information, 80.3% 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

Differences across 2021 builds
Specification	This bicycle Devinci Riff Altus 8s	Devinci Riff Altus 9s	Devinci Riff Deore 10s
Frame
Bicycle weight	14.82 kg	14.54 kg	14.38 kg
Drivetrain
Rear sprockets	8	9	10
Largest sprocket	40	40	46
Lowest gear	20.3 in	20.3 in	17.7 in
Brakes
Brake type	Mechanical disc	Hydraulic disc	Hydraulic disc
Other specifications
Fork spring	Coil	Coil	Air