Avanti Black Thunder 1

2021 UrbanFitness Manufacturer page

Fork travel: 80 mm
Wheels: 650b
Drivetrain: 3 × 7 28–48t / 12–28t
Gear range: 400%
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

5 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

ADT Custom FormTech 6061 Alloy, Integrated Headtube, Replaceable dropouts Not identified

Suspension

1 part

Fork

Suspension, Alloy Crown and Lowers, 80mm Travel Not identified

Drivetrain

7 parts

Brakes

2 parts

Brake levers

Alloy Not identified
Brakes

JAK 7B Mechanical Disc, 160mm rotors Not identified

Wheels and tires

5 parts

Front hub

Front: Alloy 32H QR, Rear: 32H Alloy Cassette Disc Not identified
Rear hub

Front: Alloy 32H QR, Rear: 32H Alloy Cassette Disc Not identified
Rims

Lightweight Alloy 32H Double Wall Disc Not identified
Spokes

Stainless Steel Not identified
Tires

MTB fast rolling 27.5 x 2.3 Not identified

Cockpit and contact points

6 parts

Grips

MTB Kraton soft comfort Not identified
Handlebar

Lightweight Alloy Riser, 15 Rise, 9 Sweep, 680mm wide, 31.8mm Not identified
Headset

1 1/8th Ahead Internal semi cartridge Not identified
Pedals

Resin Platform with ball bearings Not identified
Saddle

Zero Sport Not identified
Seatpost

Alloy 27.2 x 300mm, alloy QR Not identified

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Top tube lengthmm	530	552	565	585	610
Seat tube lengthmm	330	380	430	480	520
Head tube lengthmm	90	90	105	115	125
Head tube angle	69.5°	69.5°	69.5°	69.5°	69.5°
Seat tube angle	75°	74°	73°	73°	73°
Chainstay lengthmm	450	450	450	450	450
Wheelbasemm	1062	1073	1076	1097	1122
Front centermm	617	628	631	652	677
Bottom bracket dropmm	50	50	50	50	50
Standover heightmm	680	705	747	779	806
Fork rakemm	40	40	40	40	40
Suspension and parts
Crank lengthmm	170	170	170	170	170
Stem lengthmm	60	60	60	90	90

Not published by the manufacturer: Reach, Stack, Bottom bracket height, Trail, Stack/reach ratio, Front travel, Rear travel, Handlebar width, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 28
Largest chainring: 48
Rear sprockets: 7
Smallest sprocket: 12
Largest sprocket: 28
Lowest gear: 27.5 in
Highest gear: 110.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.3″
Wheel material: Aluminum
Wheel size: 650b

Technical analysis

2 measures

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

Lowest gear

27.5 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2021
Sample: 245 bicycles with this information
Coverage: 92.1% of the class

Highest gear

110.0 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2021
Sample: 245 bicycles with this information
Coverage: 92.1% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.5 km/h
Highest gear: 42.1 km/h

Total gear range 400%

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: 27.5–110.0 gear inches
Class reference (p10–p90): 20.6–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2021
Lowest gear: 245 bicycles with this information, 92.1% of the class
Highest gear: 245 bicycles with this information, 92.1% 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 Avanti Black Thunder 1	Avanti Black Thunder 24	Avanti Black Thunder LE
Suspension
Front travel	80 mm	50 mm	80 mm
Drivetrain
Front chainrings	3	1	3
Smallest chainring	28	32	24
Largest chainring	48	32	42
Lowest gear	27.5 in	27.4 in	23.6 in
Highest gear	110.0 in	64.0 in	96.3 in
Brakes
Brake type	Mechanical disc	Mechanical disc	Hydraulic disc
Other specifications
Tire width	2.3″	2.6″	2.6″
Wheel size	650b	24″	650b