Specialized P. 20 Amateur

2011 MountainDirt jump Manufacturer page

Suspension: Rigid
Wheels: 20″
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

20.5" 120+

Components

5 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

Hi-Ten 20"" frame, 20.5"" TT, MID BB shell, externally relieved integrated HT, formed monostay yoke, seat-stay mounted U-brake bosses, 5mm dropouts for 14mm axle Not identified

Suspension

1 part

Fork

Hi Ten, Taper blades, 1-1/8"" threadless, 5mm dropouts for 3/8"" axle Not identified

Drivetrain

4 parts

Bottom bracket

Mid BB, 2x sealed cartridge bearing w/ 19mm 8 spline Cr-Mo BB spindle, steel tube and plastic cone spacers Not identified
Cassette

1/2"" x 1/8"" x 9t Not identified
Chain
- KMC
Z-510H
Crankset

3pc. tubular Cr-Mo for 8 spline, 170mm length Not identified

Brakes

2 parts

Brake levers

Lever ""U"" brake, 15mm cable pull Not identified
Brakes
- Tektro
FX-340

Wheels and tires

5 parts

Front hub

Forged alloy low flange, Cr-Mo 3/8"" axle, loose ball, 36h Not identified
Rear hub

Forged alloy cassette, 14mm axle, loose ball, 36h, 9t driver Not identified
Rims
- Alex Rims
Spokes

2mm (14g) stainless Not identified
Tires
- Specialized

Cockpit and contact points

7 parts

Grips

P. Grip BMX soft compound, closed end, flanged, 150mm Not identified
Handlebar

Cr-Mo 2pc. 8"" x 28"", 11 degree back sweep, 2 degree up Not identified
Headset
- FSA
Pedals

P. Lo-Pro plastic platform, loose ball, 9/16"" Not identified
Saddle

P. Combo, 1pc co-molded composite saddle and alloy seat post combination Not identified
Seatpost

Alloy, no offset, 25.4mm Not identified
Stem

Forged alloy front load drop type, 50mm extension, 1 1/8"" A-Head 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 20.5"

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 1 published size

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	550
Seat tube lengthmm	235
Head tube lengthmm	110
Head tube angle	75°
Seat tube angle	72°
Chainstay lengthmm	352
Wheelbasemm	921
Front centermm	572
Bottom bracket dropmm	35.7
Bottom bracket heightmm	294
Fork rakemm	31

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Steel
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 25
Largest chainring: 25

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.2″
Wheel material: Aluminum
Wheel size: 20″

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 2011 builds

Differences across 2011 builds
Specification	This bicycle Specialized P. 20 Amateur	Specialized P.1	Specialized P.20	Specialized P.2	Specialized P.24
Frame
Fork material	Steel	Steel	Steel	Magnesium	Steel
Suspension
Suspension configuration	Rigid	Rigid	Rigid	Hardtail	Rigid
Front travel	Not informed	Not informed	Not informed	80 mm	Not informed
Drivetrain
Rear sprockets	Not informed	1	Not informed	Not informed	1
Smallest sprocket	Not informed	12	Not informed	Not informed	10
Largest sprocket	Not informed	12	Not informed	Not informed	10
Lowest gear	Not informed	54.2 in	Not informed	Not informed	60.0 in
Highest gear	Not informed	54.2 in	Not informed	Not informed	60.0 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Rim brake	Mechanical disc	Mechanical disc
Cockpit
Shifting	Mechanical	No shifting	Mechanical	Mechanical	No shifting
Other specifications
Suspension	Rigid	Rigid	Rigid	Hardtail	Rigid
Tire width	2.2″	2.3″	2.2″	2.3″	2.2″
Wheel size	20″	26″	20″	26″	24″
Fork spring	Not informed	Not informed	Not informed	Coil	Not informed