P.20 AM
Part No.  

P.20 AM

Part No.  
P.20 AM
Technical Specifications
The "P' in "P. Bikes" doesn't stand for "Pretty". No fluff and no sparkly stuff. Just bombproof rides that mix advanced technology and top-shelf materials with geometry proven in the street, park and dirt. Start rolling right on the P.20 AM, it's built for shredding with a strong steel frame and fork, and quality components.
  • Hi-Ten frame with 20.5" top tube has an integrated headset, MID BB, small dropouts, and dialed geos for dirt, park, or street
  • P. Series tapered fork is strong enough to handle abuse
  • Lightweight 36-hole wheels with low flange 3/8" axle front hub and rear cassette with 9t driver
  • Ride dirt, park, or street on the Specialized Compound Street tires, with dual compound traction, low rolling resistance, and rounded profile
  • 3-piece tubular Cr-Mo crankset with cartridge-bearing MID BB lets you boost as high as you like
  • 25t chainring resists bending and delivers clearance over obstacles
  • Press-in MID BB is light, durable, and easy to service
  • Lightweight plastic platform pedals take mercy on your shins, but remain strong enough to handle even the harshest landing
  • Big 8" x 28" handlebars make your set-up current and give you more leverage and control
  • Super-light and durable one-piece saddle/post combo can take a serious beating
  • Compact, singlespeed gearing specially designed for dirt/park/street

Technical Specifications

CHAIN KMC Z-510H, 1/2"" x 1/8"", anti-drop inner links
BOTTOM BRACKET MID BB, 2x sealed cartridge bearing w/ 19mm, 8-spline, Cr-Mo spindle, steel tube, and plastic cone spacers
FREEWHEEL CNC 1/2"" x 1/8"" x 9t driver
CRANKSET 3pc. tubular, heat-treated Cr-Mo for 8 spline, 170mm length
CHAINRINGS Stamped steel, 25T
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
INNER TUBES Schrader valve
SPOKES Stainless, 2.0mm (14g)
RIMS P. 20, alloy single-wall, 36mm, pinned, 36h
FRONT TIRE Specialized Compound Street, 30 TPI, wire bead, 20x2.3""
REAR TIRE Specialized Compound Street, 30 TPI, wire bead, 20x2.1""
SADDLE P. Series, 1pc co-molded composite saddle and alloy 25.4mm seat post combination w/ embossed P. Series logo padded cover
SEATPOST Alloy, 25.4mm, no offset
STEM Forged alloy Ahead, front load, 22.2mm
HANDLEBARS Cr-Mo 2pc., 11º backsweep, 2º upsweep, 22.2mm
GRIPS P. Grip, flanged soft compound, open end w/ endplug, 150mm
BRAKE LEVERS Lever ""U"" brake, 15mm cable pull
REAR BRAKE Tektro FX-340 U-brake, melt forged, single bushing, coil spring, 15mm offset arms, soft compound pad
PEDALS P. Lo Pro plastic platform w/ molded pins, loose ball, 9/16""
HEADSET Integrated 1-1/8"" threadless, Campy-style, full cartridge bearings
SEAT BINDER Integrated Cr-Mo bolt and nylock nut
FORK Hi-Ten, tapered blades, 1-1/8"" threadless, 5mm dropouts for 3/8"" axle
FRAME Hi-Ten 20"" frame, 20.5"" TT, MID BB shell, externally relieved integrated HT, formed monostay yoke, seatstay-mounted U-brake bosses, 5mm dropouts for 14mm axle


Geometry Chart

- Geometry

Crank Length 170mm
Stem Length 50mm
Seatpost Length 200mm
Handlebar Width 710mm
Reach 432mm
Stack 367mm
Bottom Bracket Drop -35mm
Chainstay Length 352mm
Seat Tube Angle 72°
Head Tube Angle 74.5°
Head Tube Length 110mm
Top Tube Length (Actual) 522mm
Fork Length 314mm
Fork Offset 31mm
Seat Tube Length, Center to Top 235mm
Standover Height 568mm
Wheel Base 921mm
Bottom Bracket Height 291mm