Curve Belgie Ultra

Name: Curve Belgie Ultra
Brand: Curve

2021 RoadRace Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 35–48t / 10–36t
Gear range: 494%
Frame: Titanium
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

46cm 147–157
49cm 155–165
52cm 161–170
54cm 168–177
56cm 175–185
58cm 182–193
61cm 190–201
64cm 198–208

Components

8 of 13 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

Titanium Curve Belgie Ultra Not identified

Suspension

1 part

Fork

Curve 700c Road Disc Not identified

Drivetrain

5 parts

Bottom bracket

Curve T47 DUB 68 mm Not identified
Cassette
- SRAM Rival XG-1250 12 speeds 10–36t
XG-1250
Chain
- SRAM Rival
Crankset
- SRAM Rival 48/35t
Shifters
- SRAM Rival

Brakes

1 part

Brakes
- SRAM Rival

Wheels and tires

1 part

Tires

Rubino Pro TLR 700 x 30c Not identified

Cockpit and contact points

4 parts

Handlebar
- Zipp
Headset

Curve Integrated 42/52 mm semi-internal Not identified
Saddle
- Fizik Vento Argo R5
Seatpost
- Zipp

Sizes and geometry

8 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 389mm

Stack 573mm

Wheelbase 1015mm

Head angle 72.0°

Seat angle 74.0°

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 8 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	376	381	386	389	392	398	404	411
Stackmm	525	537	551	573	596	621	640	649
Top tube lengthmm	528	537	545	555	564	588	600	610
Seat tube lengthmm	460	490	520	540	560	580	610	640
Head tube lengthmm	125	135	148	170	195	220	240	250
Head tube angle	70.5°	71°	71.5°	72°	72°	72.5°	72.5°	72.5°
Seat tube angle	74°	74°	74°	74°	74°	73°	73°	73°
Chainstay lengthmm	425	425	425	425	428	428	430	430
Wheelbasemm	999	1004	1009	1015	1029	1038	1052	1062
Front centermm	585	591	595	601	611	620	632	642
Bottom bracket dropmm	75	75	75	75	73	73	73	73
Bottom bracket heightmm	261	261	261	261	263	263	263	263
Fork rakemm	43	43	43	44	43	43	43	44
Trailmm	73	70	67	63	64	61	61	60
Stack/reach ratio	1.40	1.41	1.43	1.47	1.52	1.56	1.58	1.58

Not published by the manufacturer: Standover height, 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: Titanium

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 35
Largest chainring: 48
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 36
Lowest gear: 28.2 in
Highest gear: 139.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: T47
Tire width: 30c
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

28.2 gear inches

This value is below the central range for this class.

Cohort: Road / Race Model year: 2021
Sample: 506 bicycles with this information
Coverage: 79.3% of the class

Highest gear

139.2 gear inches

This value is above the central range for this class.

Cohort: Road / Race Model year: 2021
Sample: 506 bicycles with this information
Coverage: 79.3% of the class

Shifting

Electronic

286 of 638 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2021
Sample: 638 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.8 km/h
Highest gear: 53.3 km/h

Total gear range 494%

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: 28.2–139.2 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: 506 bicycles with this information, 79.3% of the class
Highest gear: 506 bicycles with this information, 79.3% of the class