Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 20" -
Suspension Rigid -
Brakes Coaster
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Specialized A1 Premium Aluminum, 20"" frame w/ low standover TT design, integrated kickstand, horizontal dropouts
Suspension Fork
1-1/8"" threadless Hi-Ten steerer w/ 1-1/8"" blades
Drivetrain
Crank
Heat-treated Hi-Ten, 1pc.
Bottom Bracket
Heat treated Hi-Ten cups, loose ball for 1pc.
Chain
KMC Z-410, 1/2"" x 1/8""
Pedals
Composite platform w/ reflectors, loose ball, 9/16""
Wheels
Front Hub
Steel, nutted axle, 36h
Rear Hub
Steel, coaster brake, nutted axle, 36h
Rims
Alloy pinned, 36h
Spokes
UCP 14g, w/ brass nipple
Tires
Specialized Rhythm Lite Sport, 30 TPI, wire bead, 20x2.0""
Brakes
Brakes
Coaster w/ linear pull
Cockpit
Stem
Alloy Ahead
Handlebar
Steel 2pc.
Grips
Specialized Kraton
Headset
1-1/8"" threadless, loose ball
Seat
Saddle
Specialized Kids, 7mm rail w/ clamp
Seatpost
Steel, 25.4mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 12" | 16" | 20" |
|---|---|---|---|
| Bottom Bracket Height | 165 mm | 198 mm | 227 mm |
| Rake | 24 mm | 24 mm | 23.5 mm |
| Top Tube Length | 305 mm | 385 mm | 439 mm |
| Seat Tube Angle | 76 ° | 74 ° | 76 ° |
| Seat Tube Length | 179 mm | 210 mm | 241 mm |
| Head Tube Angle | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 70 mm | 80 mm | 80 mm |
| Chainstay Length | 271 mm | 310 mm | 389 mm |
| Standover Height | 338 mm | 412 mm | 482 mm |
| Wheels | 20" | 20" | 20" |
Model Overview
Hotrock 20 Coaster Girls belongs to the Specialized Hotrock model. 35 bikes variations carry this model name so far. You can get a glimpse at all models from 2012, by clicking on this link.
Safety
Make sure you wear a helmet on every ride, and that your bike performs well. In short, this means checking the tires, brakes, and chain to make sure everything is in good working order.
Average price for Youth bikes
Our math shows that the average cost of a dependable Youth bike is 278$. However, even though the average price of a Youth bike is lower, you might still be able to get a top-quality bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Hotrock 20 Coaster Girls components
Fork material
The fork is made out of steel, which is tougher than carbon in the case of an impact. However, it can add some extra weight to the bike.
Wheels size
When leaving the production line, the Hotrock 20 Coaster Girls model has 20″ aluminum wheels. The 20″ 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
Nothing is more important on a bike than its ability to brake properly. Specialized Hotrock 20 Coaster Girls is equipped with Coaster brakes. Coaster brakes are among the oldest brake types you can find on a bike. However, they have flaws, especially if the chain falls off.