Trek Émonda ALR 4

Name: Trek Émonda ALR 4
Brand: Trek

2021 RoadRace Manufacturer page

Trek Émonda ALR 4, color Radioactive Red to Marigold Fade

Price: Not published

Prices shown first for United States
United Kingdom: £1,600 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 10 34–50t / 12–28t
Gear range: 343%
Weight: 9.33 kg 20.6 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

47cm 152–158
50cm 158–163
52cm 163–168
54cm 168–174
56cm 174–180
58cm 180–185
60cm 185–190
62cm 190–195
64cm Not informed

Components

12 of 12 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.

Drivetrain

6 parts

Bottom bracket
- Shimano SM-BB71
SM-BB71
Cassette
- Shimano CS-HG500-10 10 speeds
CS-HG500-10
Chain
- Shimano CN-HG54
CN-HG54
Crankset
- Shimano Tiagra FC-4700 10 speeds 50/34t
FC-4700
Front derailleur
- Shimano Tiagra FD-4700 2 speeds
FD-4700
Rear derailleur
- Shimano Tiagra RD-4700 10 speeds
RD-4700

Brakes

1 part

Brakes
- Shimano Tiagra

Wheels and tires

1 part

Tires
- Bontrager

Cockpit and contact points

4 parts

Sizes and geometry

9 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 56cm

Table

Reach 387mm

Stack 577mm

Wheelbase 983mm

Head angle 73.5°

Seat angle 73.3°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 9 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	369	374	379	381	387	391	395	398	401
Stackmm	522	535	547	555	577	596	615	634	654
Top tube lengthmm	513	521	534	543	560	573	586	598	610
Seat tube lengthmm	444	476	493	506	533	553	573	593	613
Head tube lengthmm	115	130	140	155	170	190	210	230	250
Head tube angle	71.2°	72.1°	72.8°	73°	73.5°	73.8°	73.9°	73.9°	74°
Seat tube angle	74.6°	74.6°	74.2°	73.7°	73.3°	73°	72.8°	72.5°	72.3°
Chainstay lengthmm	410	410	410	410	410	411	411	412	413
Wheelbasemm	974	974	977	981	983	992	1001	1010	1018
Front centermm	575	575	578	581	583	591	600	607	614
Bottom bracket dropmm	72	72	72	70	70	68	68	68	68
Bottom bracket heightmm	264	264	264	266	266	268	268	268	268
Standover heightmm	698	707	729	742	767	786	804	822	841
Fork rakemm	46	45	45	46	40	41	41	41	40
Trailmm	67	61	57	56	58	56	56	55	55
Stack/reach ratio	1.42	1.43	1.44	1.46	1.49	1.52	1.56	1.59	1.63

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
Fork material: Carbon
Bicycle weight: 9.33 kg

20.6 lb
Weight limit: 125 kg

275.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 10
Smallest sprocket: 12
Largest sprocket: 28
Lowest gear: 35.2 in
Highest gear: 120.8 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
Tire clearance: Maximum tire width: 28c
Tire width: 28c
Wheel size: 700c

Technical analysis

3 measures

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

Lowest gear

35.2 gear inches

This value is above the central range for this class.

Cohort: Road / Race Model year: 2021
Sample: 500 bicycles with this information
Coverage: 79.1% of the class

Highest gear

120.8 gear inches

This value is below the central range for this class.

Cohort: Road / Race Model year: 2021
Sample: 500 bicycles with this information
Coverage: 79.1% of the class

Shifting

Mechanical

283 of 632 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2021
Sample: 632 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.5 km/h
Highest gear: 46.3 km/h

Total gear range 343%

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: 35.2–120.8 gear inches
Class reference (p10–p90): 30.8–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Race Model year: 2021
Lowest gear: 500 bicycles with this information, 79.1% of the class
Highest gear: 500 bicycles with this information, 79.1% 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 Trek Émonda ALR 4	Trek Émonda ALR 5	Trek Émonda ALR 6	Trek Émonda SL 5	Trek Émonda SL 5 Disc	Trek Émonda SL 6
Frame
Frame material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	9.33 kg	9.04 kg	8.51 kg	9.15 kg	9.15 kg	8.25 kg
Drivetrain
Smallest chainring	34	34	36	34	34	36
Largest chainring	50	50	52	50	50	52
Rear sprockets	10	11	11	11	11	11
Smallest sprocket	12	11	11	11	11	11
Largest sprocket	28	28	30	30	30	30
Lowest gear	35.2 in	35.2 in	34.8 in	32.9 in	32.9 in	34.8 in
Highest gear	120.8 in	131.8 in	137.1 in	131.8 in	131.8 in	137.1 in
Other specifications
Bottom bracket standard	BB86/BB92	BB86/BB92	BB86/BB92	T47	T47	T47
Tire clearance	Maximum tire width: 28c	Maximum tire width: 28c	Maximum tire width: 28c	Maximum tire width: 28c	Maximum tire width: 30c	Maximum tire width: 28c
Tire width	28c	25c	28c	28c	28c	28c
Wheel material	Not informed	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum