Felt B12

2011 RoadTriathlon

Last known price: $3,799

Prices shown first for United States
Suspension: Rigid
Wheels: 650c
Drivetrain: 2 × 10 39–53t / 11–26t
Gear range: 321%
Weight: 8.92 kg 19.7 lb · Reference configuration not specified
Frame: Carbon
Brakes: Rim brake

Sizes

Size guide

48cm
50cm
52cm
54cm
56cm
58cm
60cm

The manufacturer did not publish rider heights for these sizes.

Components

21 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 Aero TT/Tri UHC Performance MMC Carbon Fiber Frame w/ 3KP Finish. Full Aero Tubeset w/ Front & Rear wheel recesses, Internal Cable Routing, Forged horizontal dropouts Not identified

Suspension

2 parts

Fork
- Felt
Rear shock

None

Drivetrain

8 parts

Bottom bracket
- SRAM GXP
Cassette
- SRAM 11–26t
Chain
- SRAM
Chain guide

None
Crankset
- SRAM S-300 10 speeds 53/39t
S-300
Front derailleur
- SRAM Red
Rear derailleur
- SRAM Red
Shifters
- SRAM Red

Brakes

2 parts

Brake levers
- SRAM
Brakes
- SRAM

Wheels and tires

5 parts

Front hub
- Felt
TTR-3
Rear hub
- Felt
TTR-3
Rims
- Felt
TTR-3
Spokes
- Alpina
Tires
- Vittoria

Cockpit and contact points

7 parts

Grips
- Devox
Handlebar
- Felt
Headset
- FSA
Pedals

None
Saddle
- Felt
Seatpost
- Felt
Stem
- Felt

Other components

1 part

Fenders

None

Sizes and geometry

7 sizes Open in the geometry plotter

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

Size 54cm

Table

Geometry diagram unavailable

The drawing needs head tube angle, seat tube angle and seat tube length, which the manufacturer did not publish. Available facts remain in the table.

Size Reach Stack

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	386	391	406	414	426	449	461
Stackmm	467	483	502	513	527	546	561
Head tube lengthmm	115	130	100	110	125	145	160
Chainstay lengthmm	385	385	405	405	405	405	405
Wheelbasemm	947	951.9	984	990.5	1007.1	1036.3	1052.4
Front centermm	562	567.6	588.6	595.5	611.6	640.3	656.6
Bottom bracket dropmm	45	45	70	70	70	70	70
Standover heightmm	703	720	743	764	779	780	780
Fork rakemm	35	35	40	40	40	40	40
Stack/reach ratio	1.21	1.24	1.24	1.24	1.24	1.22	1.22

Not published by the manufacturer: Top tube length, Seat tube length, Head tube angle, Seat tube angle, 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: Carbon
Fork material: Carbon
Bicycle weight: 8.92 kg

19.7 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 39
Largest chainring: 53
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 26
Lowest gear: 41.3 in
Highest gear: 132.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 23c
Wheel material: Aluminum
Wheel size: 650c

Technical analysis

3 measures

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

Lowest gear

41.3 gear inches

This value is within the central range for this class.

Cohort: Road / Triathlon Model year: 2011
Sample: 32 bicycles with this information
Coverage: 100.0% of the class

Highest gear

132.5 gear inches

This value is within the central range for this class.

Cohort: Road / Triathlon Model year: 2011
Sample: 32 bicycles with this information
Coverage: 100.0% of the class

Shifting

Mechanical

5 of 32 bicycles with this information use electronic shifting.

Cohort: Road / Triathlon Model year: 2011
Sample: 32 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 15.8 km/h
Highest gear: 50.8 km/h

Total gear range 321%

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: 41.3–132.5 gear inches
Class reference (p10–p90): 35.2–139.7 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Triathlon Model year: 2011
Lowest gear: 32 bicycles with this information, 100.0% of the class
Highest gear: 32 bicycles with this information, 100.0% 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.

Changes since 2010

Changes since 2010
Specification	2010 Felt B12	This bicycle Felt B12
Frame
Bicycle weight	8.9 kg	8.92 kg
Drivetrain
Smallest sprocket	12	11
Largest sprocket	25	26
Lowest gear	45.2 in	41.3 in
Highest gear	128.1 in	132.5 in
Other specifications
Wheel size	650c / 700c	650c