Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 24" -
Travel Front 50mm -
Fork SunTour XCT
-
Groupset Tourney, Shimano -
Suspension Hardtail -
Drivetrain 3 × 7 -
Brakes Rim
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Specialized A1 Premium Aluminum, 24"" frame, suspension fork geo w/ low standover TT, formed DT/TT, forged dropouts w/ replaceable hanger
Suspension Fork
SR Suntour SF11-XCT-JR-24, 1pc. alloy lower, 25.4mm Hi-Ten stanchions, 1-1/8"" Hi-Ten steerer, coil/mcu w/ preload adj. 50mm travel
Drivetrain
Rear Derailleur
Shimano TX-31, 7-speed, direct mount
Front Derailleur
Shimano FD-CO50, 3-speed
Shift Levers
Shimano RS-31, 6-speed, Revo Twist
Cassette
Shimano 7-speed, 14-28t
Crank
Forged alloy arms, triple chainring with chainguard
Bottom Bracket
Water sealed, loose ball, 68mm x 128mm
Chain
KMC Z7, reusable Missing Link
Pedals
Composite platform w/ reflectors, loose ball, 9/16""
Wheels
Front Hub
Forged alloy, loose ball, nutted axle, 32h
Rear Hub
Forged alloy, freewheel type, 32h, nutted axle
Rims
Alex C-1000, alloy single-wall, 32h
Spokes
Stainless, 2.0mm (14g)
Tires
Specialized Roller Sport, 30 TPI, wire bead, 24x2.125""
Brakes
Brakes
Die cast, alloy ""V"" brake, 1pc. pad
Brake Levers
Tektro junior reduced-reach ""V"", alloy, linear pull compatible
Cockpit
Stem
Alloy Ahead, 4 bolt, 20º rise, 25.4mm clamp
Handlebar
Hi-Ten riserbar, 40mm rise, 10º backsweep, 6º upsweep, 25.4mm
Grips
Specialized Revo type
Headset
1-1/8"" threadless, loose ball
Seat
Saddle
Specialized Kids Body Geometry, 1pc. 7mm rail w/ clamp
Seatpost
Alloy, 27.2mm, micro adjust
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 7-SPD | 21" |
|---|---|---|
| Bottom Bracket Height | 262 mm | 262 mm |
| Front Center | 572 mm | 572 mm |
| Rake | 40 mm | 40 mm |
| Top Tube Length | 504 mm | 504 mm |
| Seat Tube Angle | 73 ° | 73 ° |
| Seat Tube Length | 312 mm | 312 mm |
| Head Tube Angle | 69 ° | 69 ° |
| Head Tube Length | 120 mm | 120 mm |
| Chainstay Length | 407 mm | 417 mm |
| Wheelbase | 975 mm | 989 mm |
| Standover Height | 583 mm | 583 mm |
| Wheels | 24" | 24" |
About this model
Hotrock 24 21-Speed Girls completes the Specialized Hotrock model. Specialized released 35 bikes variations of this model so far. Check out the entire range from 2012 of this model, by clicking this link.
Safety
Your safety should be the top priority when you go for a ride. In short, make sure that you always use a helmet, high visibility clothing, and proper lights when riding at night-time.
Youth bikes average price
According to our calculations, the average cost of a Youth bike that is reliable is 278$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Youth bike. In conclusion, always check bike reviews and their components before making a purchase to make sure you don’t overpay.
Hotrock 24 21-Speed Girls components
Fork
Specialized Hotrock 24 21-Speed Girls 2012 bike is equipped with the SunTour XCT fork, and has 50mm travel. Bike forks are good shock absorbers and provide a smooth ride and a great experience. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Fork material
When it comes to the fork, this bike has an aluminum one, which doesn’t add too much extra weight to the bike. However, it is not so stiff as steel or carbon forks are.
Wheels
As for the wheels, Specialized Hotrock 24 21-Speed Girls 2012, has a 24″ aluminum model. The 24″ wheels are a good fit for folding bikes, BMX, or children bikes. In conclusion, you can use them better on-road, and less on technical terrain.
Brakes
For your safety, it is important to have quality breaks on your bike. Specialized Hotrock 24 21-Speed Girls has Rim brakes installed. Slightly lighter than hydraulic brakes, rim brakes are a budget choice. However, they are not nearly as effective as hydraulic brakes are.