Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Steel -
Wheels 18" -
Suspension Rigid -
Brakes Mechanical Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Hi-Ten plain gauge, 18.5"" TT, externally relieved MID BB shell and integrated headset, seatstay-mounted U-brake bosses, 5mm thick dropouts for 14mm axle
Suspension Fork
Hi Ten, tapered blades, 1-1/8"" threadless, 5mm dropouts for 3/8"" axle
Drivetrain
Cassette
CNC 1/2"" x 1/8"" x 9t driver
Crank
3pc. tubular Cr-Mo, 8 spline, 170mm length
Bottom Bracket
MID BB, 2x sealed cartridge bearing w/ 19mm, 8-spline, Cr-Mo spindle, steel tube, and plastic cone spacers
Chain
KMC Z-510H, 1/2"" x 1/8"", anti-drop inner links
Pedals
P. Lo Pro plastic platform w/ molded pins, loose ball, 9/16""
Wheels
Front Hub
Low flange, loose ball bearing, 3/8"" Cr-Mo axle, nutted type, 36h
Rear Hub
Low flange, CNCd 9t cog driver, loose ball, hollow 14mm Cr-Mo axle w/ 23mm contact, 17mm axle nuts, 36h
Rims
P.18, alloy single-wall, 31mm, pinned, 36h
Spokes
Stainless, 2.0mm (14g)
Tires
Specialized Rhythm Lite Sport, 30 TPI, wire bead, 18x2.0""
Brakes
Brakes
Tektro FX-340 U-brake, melt forged, single bushing, coil spring, 15mm offset arms, soft compound pad
Brake Levers
Lever ""U"" brake, 15mm cable pull
Cockpit
Stem
Die cast alloy, Ahead, front load, 22.2mm
Handlebar
Cr-Mo 2pc. 11º backsweep, 2º upsweep, 22.2mm
Grips
P. Grip, flanged soft compound, open end w/ endplug, 150mm
Headset
Integrated 1-1/8"" threadless, Campy-style, full cartridge bearings
Seat
Saddle
P. Series, 1pc co-molded composite saddle and alloy 25.4mm seat post combination
Seatpost
Alloy, 25.4mm, no offset
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 18" |
|---|---|
| Stack Reach Ratio | 0.82 mm |
| Bottom Bracket Height | 263 mm |
| Front Center | 511 mm |
| Rake | 31 mm |
| Stack | 325 mm |
| Reach | 397 mm |
| Seat Tube Angle | 72 ° |
| Seat Tube Length | 207 mm |
| Head Tube Angle | 74.5 ° |
| Head Tube Length | 100 mm |
| Chainstay Length | 302 mm |
| Wheelbase | 810 mm |
| Bottom Bracket Drop | -31 mm |
| Standover Height | 502 mm |
| Wheels | 18" |
| Rider Min Height | 120 cm |
About this model
P.18 AM completes the Specialized P18 model. There is 1 bike that carries this model name.
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 Dirt Jump bikes
If you want an acceptable Dirt Jump bike you should know that the average price is 863$. However, even if your budget is less than the average, you might still be able to get a top-quality Dirt Jump bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
Overview of 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
As for the wheels, Specialized P.18 AM 2012, has a 18″ aluminum model. This wheel size is used on bike models like BMX, children, or folding 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 P.18 AM has Mechanical Disc brakes installed. These brakes are also very popular, and a lot cheaper than hydraulic disk brakes. However, they don’t have the stopping power of hydraulic brakes.