Felt 7 Eighty

2017 MountainCross-country

Last known price: $599

Prices shown first for United States
Fork travel: 100 mm
Wheels: 27.5″
Drivetrain: 3 × 8 22–42t / 11–34t
Gear range: 590%
Weight: 14.23 kg 31.4 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

16 of 23 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

Felt XC, butted 6061 aluminum, Hydroform, semi-integrated head tube, replaceable derailleur hanger, IS disc mounts, standard 73mm threaded bottom bracket, 135mm OLD, Ø30.9mm seatpost, Ø34.9mm low clamp front derailleur Not identified

Suspension

2 parts

Fork
- SR Suntour
Rear shock

None

Drivetrain

8 parts

Bottom bracket

Square taper Not identified
Cassette
- SunRace 11–34t
Chain
- SunRace
Chain guide

None
Crankset
- Shimano Tourney FC-TY501 8 speeds
FC-TY501
Front derailleur
- Shimano Altus
Rear derailleur
- Shimano Acera
Shifters
- Shimano Altus SL-M315
SL-M315

Brakes

2 parts

Brake levers
- Tektro
Brakes
- Tektro

Wheels and tires

5 parts

Front hub

Forged aluminum, 6-bolt, QRx100 Not identified
Rear hub

Forged aluminum, 6-bolt, QRx135 Not identified
Rims

Aluminum double wall, 19mm inside Not identified
Spokes

2.0mm stainless Not identified
Tires
- Schwalbe Rapid Rob

Cockpit and contact points

7 parts

Grips
- Felt
Handlebar
- Felt
Headset
- FSA NO.10
Pedals

Low-profile nylon platform Not identified
Saddle
- Felt
Seatpost
- Felt
Stem
- Felt

Other components

1 part

Fenders

None

Sizes and geometry

6 sizes Open in the geometry plotter

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

Size 16"

Table

Reach 411mm

Stack 588mm

Wheelbase 1073mm

Head angle 70.0°

Seat angle 73.0°

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 Reach Stack

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	375	394	411	427	445	461
Stackmm	560	579	588	598	607	616
Top tube lengthmm	540	565	590	610	630	650
Seat tube lengthmm	315	356	406	457	508	559
Head tube lengthmm	90	90	100	110	120	130
Head tube angle	70°	70°	70°	70°	70°	70°
Seat tube angle	73.5°	73.5°	73°	73°	73°	73°
Chainstay lengthmm	425	425	425	425	425	425
Wheelbasemm	1026	1053	1073	1093	1114	1134
Front centermm	607	633	653	673	694	714
Bottom bracket dropmm	50	50	50	50	50	50
Bottom bracket heightmm	305	305	305	305	305	305
Standover heightmm	620	660	700	745	780	810
Fork rakemm	42	42	42	42	42	42
Trailmm	86	85	86	85	85	85
Stack/reach ratio	1.49	1.47	1.43	1.40	1.36	1.34

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: 14.23 kg

31.4 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 22
Largest chainring: 42
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 17.8 in
Highest gear: 105.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Coil
Tire width: 2.1″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

3 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: 2017
Sample: 555 bicycles with this information
Coverage: 87.8% of the class

Lowest gear

17.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2017
Sample: 607 bicycles with this information
Coverage: 96.0% of the class

Highest gear

105.0 gear inches

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2017
Sample: 607 bicycles with this information
Coverage: 96.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 40.2 km/h

Total gear range 590%

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: 17.8–105.0 gear inches
Class reference (p10–p90): 17.0–110.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2017
Lowest gear: 607 bicycles with this information, 96.0% of the class
Highest gear: 607 bicycles with this information, 96.0% 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 2017 builds

Differences across 2017 builds
Specification	This bicycle Felt 7 Eighty	Felt 7 Ninety	Felt 7 Seventy
Frame
Bicycle weight	14.23 kg	14.71 kg	14.28 kg
Suspension
Front travel	100 mm	75 mm	100 mm
Drivetrain
Largest chainring	42	44	44
Rear sprockets	8	7	9
Largest sprocket	34	34	36
Lowest gear	17.8 in	17.8 in	16.8 in
Highest gear	105.0 in	110.0 in	110.0 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Hydraulic disc
Other specifications
Tire width	2.1″	1.95″	2.1″