Genesis Tarn 20

2018 MountainTrail Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £2,199 Last known price
Fork travel: 120 mm
Wheels: 27.5″
Drivetrain: 1 × 11 32t / 11–46t
Gear range: 418%
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

17 of 20 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

Genesis MjÖlnir Seamless Double-Butted Cromoly Not identified

Suspension

1 part

Fork
- RockShox Pike RC

Drivetrain

6 parts

Bottom bracket
- Shimano
BB-52
Cassette
- Shimano SLX CS-M7000-11 11–46t
CS-M7000-11CS-M7000
Chain
- KMC X11 11 speeds
Crankset
- Shimano SLX FC-M7000 32t
FC-M7000
Rear derailleur
- Shimano SLX RD-M7000-11-GS
RD-M7000-11
Shifters
- Shimano SLX SL-M7000
SL-M7000

Brakes

2 parts

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

Wheels and tires

5 parts

Front hub
- Shimano Deore HB-M618
HB-M618FH-M618
Rear hub
- Shimano Deore FH-M618
FH-M618HB-M618
Rims
- WTB KOM Tough i40
Spokes

Stainless steel 14g Not identified
Tires
- Maxxis Rekon

Cockpit and contact points

5 parts

Handlebar
- Genesis
Headset

PRESTINE PT-F17A, ID:34/ID:45 Not identified

PT-F17A
Pedals
- Genesis
Saddle
- Genesis
Stem
- Genesis

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 440mm

Stack 638mm

Wheelbase 1159mm

Head angle 68.0°

Seat angle 74.0°

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 Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	415	440	465	490
Stackmm	633	638	638	642
Top tube lengthmm	597	623	648	675
Seat tube lengthmm	370	433	483	533
Head tube lengthmm	100	105	105	110
Head tube angle	68°	68°	68°	68°
Seat tube angle	74°	74°	74°	74°
Chainstay lengthmm	432	432	432	432
Wheelbasemm	1132	1159	1184	1211
Front centermm	706	733	758	784
Bottom bracket dropmm	55	55	55	55
Bottom bracket heightmm	300	300	300	300
Standover heightmm	759	760	785	807
Fork rakemm	51	51	51	51
Trailmm	52	52	52	52
Stack/reach ratio	1.53	1.45	1.37	1.31
Suspension and parts
Crank lengthmm	170	175	175	175
Handlebar widthmm	760	760	760	760
Stem lengthmm	55	55	55	55

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Steel

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 19.1 in
Highest gear: 80.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.8″
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

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2018
Sample: 925 bicycles with this information
Coverage: 98.6% of the class

Lowest gear

19.1 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2018
Sample: 845 bicycles with this information
Coverage: 90.0% of the class

Highest gear

80.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2018
Sample: 845 bicycles with this information
Coverage: 90.0% of the class

Shifting

Mechanical

25 of 938 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2018
Sample: 938 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.3 km/h
Highest gear: 30.6 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: 19.1–80.0 gear inches
Class reference (p10–p90): 16.5–93.5 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2018
Lowest gear: 845 bicycles with this information, 90.0% of the class
Highest gear: 845 bicycles with this information, 90.0% of the class