Specialized Hotrock 24

Name: Specialized Hotrock 24
Brand: Specialized

2021 YouthGeneral youth Manufacturer page

Specialized Hotrock 24, color Acid Blue / Black / Cali Fade

Last known price: $500

Prices shown first for United States
Fork travel: 50 mm
Wheels: 24″
Drivetrain: 1 × 8 30t / 11–34t
Gear range: 309%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

8 of 20 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

Specialized A1 Premium Aluminum, single-butted, unisex frame, replaceable derailleur hanger Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Bottom bracket

BSA, square taper, E-type Not identified
Cassette
- SunRace 11–34t
Chain
- KMC
Crankset

Forged alloy, square taper, 152mm w/ chainguard, Steel, 30T Not identified
Rear derailleur
- Shimano Tourney TX RD-TX800 8 speeds
RD-TX800
Shifters
- Shimano Tourney

Brakes

1 part

Brakes

Front: V-brake w/ tool-less reach adjust brake lever, Rear: V-brake w/ tool-less reach adjust brake lever Not identified

Wheels and tires

5 parts

Front hub

Alloy, loose ball bearings, bolt type, 32h Not identified
Rear hub
- Shimano Tourney
Rims

24" alloy, 16mm depth, 21mm internal width, 32h Not identified
Spokes

Stainless, 14g Not identified
Tires

Front: Renegade, 26 TPI, wire bead, 24x2.1", Rear: Renegade, 26 TPI, wire bead, 24x2.1" Not identified

Cockpit and contact points

6 parts

Grips
- Specialized
Handlebar

Double-butted alloy, 5-degree backsweep, 25.4mm Not identified
Pedals

Nylon platform w/ reflectors Not identified
Saddle
- Specialized
Seatpost

Alloy, single-bolt, 27.2MM Not identified
Stem

20-degree rise, 25.4mm Not identified

Sizes and geometry

1 size Open in the geometry plotter

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

Size 11"

Table

Reach 354mm

Stack 540mm

Wheelbase 999mm

Head angle 69.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 24″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	354
Stackmm	540
Top tube lengthmm	519
Seat tube lengthmm	312
Head tube lengthmm	130
Head tube angle	69°
Seat tube angle	73°
Chainstay lengthmm	410
Wheelbasemm	999
Front centermm	592
Bottom bracket dropmm	35
Bottom bracket heightmm	221.5
Standover heightmm	548
Fork rakemm	40
Trailmm	56
Stack/reach ratio	1.53
Suspension and parts
Crank lengthmm	152
Handlebar widthmm	600
Stem lengthmm	70
Seatpost lengthmm	300

Not published by the manufacturer: Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 50 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 21.2 in
Highest gear: 65.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Coil
Tire width: 2.1″
Wheel material: Aluminum
Wheel size: 24″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.1 km/h
Highest gear: 25.1 km/h

Total gear range 309%

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: 21.2–65.5 gear inches

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
Specification	This bicycle Specialized Hotrock 24	Specialized Hotrock 20
Suspension
Front travel	50 mm	40 mm
Drivetrain
Rear sprockets	8	7
Lowest gear	21.2 in	17.7 in
Highest gear	65.5 in	54.6 in
Other specifications
Bottom bracket standard	BSA	Not informed
Wheel size	24″	20″