Felt Surplus 70

2018 MountainTrail

Last known price: $1,399

Prices shown first for United States
Fork travel: 120 mm
Wheels: 27.5″
Drivetrain: 2 × 10 22–36t / 11–36t
Gear range: 536%
Weight: 13.58 kg 29.9 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

17 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

Felt 27.5+, double butted 6061 aluminum, Hydroform, ControlTaper integrated head tube, post disc mount, replaceable derailleur hanger, BB92 press fit bottom bracket, BOOST 148mm OLD, Ø30.9mm seatpost Not identified

Suspension

2 parts

Fork
- SR Suntour
Rear shock

None

Drivetrain

8 parts

Bottom bracket
- Shimano SM-BB92
SM-BB92
Cassette
- Shimano 11–36t
Chain
- Shimano CN-HG54
CN-HG54
Chain guide

None
Crankset
- Shimano
Front derailleur
- Shimano Deore
Rear derailleur
- Shimano Deore
Shifters
- Shimano Deore

Brakes

2 parts

Brake levers
- Tektro
Brakes
- Tektro
FEH-01

Wheels and tires

5 parts

Front hub

Forged Aluminum, 6-bolt, 15x110 (BOOST) Not identified
Rear hub

Forged Aluminum, 6-bolt, 12x148 (BOOST) Not identified
Rims

Aluminum double wall, tubeless ready, 40mm inside Not identified
Spokes

2.0mm stainless Not identified
Tires
- Schwalbe Rocket Ron

Cockpit and contact points

7 parts

Grips
- Felt
Handlebar
- Felt
Headset
- FSA NO.57E
Pedals

None
Saddle
- Felt
Seatpost
- Felt
Stem
- Felt

Other components

1 part

Fenders

None

Sizes and geometry

5 sizes Open in the geometry plotter

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

Size 18"

Table

Reach 408mm

Stack 662mm

Wheelbase 1139mm

Head angle 68.0°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	373	390	408	425	442
Stackmm	653	653	662	672	681
Top tube lengthmm	570	590	610	630	650
Seat tube lengthmm	360	400	450	500	550
Head tube lengthmm	100	110	120	130	140
Head tube angle	68°	68°	68°	68°	68°
Seat tube angle	73°	73°	73°	73°	73°
Chainstay lengthmm	440	440	440	440	440
Wheelbasemm	1097	1118	1139	1160	1181
Front centermm	665	686	707	728	749
Bottom bracket dropmm	65	65	65	65	65
Bottom bracket heightmm	290	290	290	290	290
Standover heightmm	660	703	749	792	819
Fork rakemm	51	51	51	51	51
Trailmm	92	89	89	89	89
Stack/reach ratio	1.75	1.67	1.62	1.58	1.54

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: 13.58 kg

29.9 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 22
Largest chainring: 36
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 16.8 in
Highest gear: 90.0 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: BB86/BB92
Fork spring: Air
Tire width: 3″
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

16.8 gear inches

This value is below 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

90.0 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: 6.4 km/h
Highest gear: 34.5 km/h

Total gear range 535%

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: 16.8–90.0 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

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 2018 builds
Specification	This bicycle Felt Surplus 70	Felt Surplus 30
Frame
Bicycle weight	13.58 kg	12.84 kg
Drivetrain
Front chainrings	2	1
Smallest chainring	22	30
Largest chainring	36	30
Largest sprocket	36	40
Lowest gear	16.8 in	20.6 in
Highest gear	90.0 in	75.0 in
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Fork spring	Air	Not informed