P.20 AM
Part No.  

P.20 AM

Part No.  
If you want to progess your riding, you need a bike that can progress with you, and not bust when you're hell-bent on nailing that new trick. The P.20 AM's steel frame and tapered fork are super tough and with a tubular Cr-Mo crank and 2.3" Compound Street tires, you've got nothing to fear but your own success.
  • Super-light and durable P.Series SL one-piece saddle/post combo offers both light weight and comfort
  • Press-in MID BB is lightweight, durable, and easy to service with sealed cartridge bearings
  • P. Series taper blade fork is strong enough to handle abuse
  • Hi-Ten frame with 20.5" top tube features a MID BB, small dropouts, and dialed geos for dirt, park, or street
  • BMX-style, 3-piece tubular Cr-Mo crankset with cartridge-bearing MID BB is strong and light to go big with confidence, singlespeed 25t chainring resists bending and delivers the clearance you need
  • Ride dirt, park, or street on the Specialized Compound Street tires with low rolling resistance and a rounded profile
  • Compact, singlespeed gearing with 9t driver specially designed for dirt/park/street
  • Lightweight 36-hole wheels with low flange solid axle front hub and hollow axle rear hub with 9t driver

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, alloy tube and cone spacers
FREEWHEEL 1 pc. CNC 1/2"" x 1/8"" x 9t driver
CRANKSET 3pc. tubular Cr-Mo, 8-spline, 175mm
CHAINRINGS 25t, 2.5mm thick steel
FRONT HUB Specialized P.Series BMX, alloy, loose ball, 36h
REAR HUB Specialized P.Series BMX, alloy, loose ball, hollow axle, 36h
INNER TUBES Schraeder valve
SPOKES Stainless, 2.0mm (14g)
RIMS Specialized P.Series, 20"", alloy single-wall, center void, 32mm, pin joint, 36h
FRONT TIRE Specialized Compound Street, 20x2.3"", wire bead, 30TPI
REAR TIRE Specialized Compound Street, 20x2.3"", wire bead, 30TPI
SADDLE Specialized P.Series 1pc co-molded composite saddle & alloy 25.4mm seat post combination w/ debossed ""P. Series"" logo padded cover
SEATPOST Alloy, no offset, 25.4mm, integrated w/ saddle
STEM BMX stem, die cast alloy, top load, 50mm length, 22.2mm
HANDLEBARS Specialized P.Series BMX bar, Hi-Ten steel, 710mm wide, 210mm rise, 11º backsweep, 2º upsweep, 22.2mm
GRIPS Specialized P.Grip, flanged soft compound, end plugs, 150mm
BRAKE LEVERS Lever ""U"" brake, 15mm cable pull
REAR BRAKE Wide tire U-brake, die-cast, single bushing, coil spring, 15mm offset arms, w/ 1pc. black pads
PEDALS Specialized P.Series Plastic platform w/ molded pins, loose ball, 9/16""
SEAT BINDER Integrated Cr-Mo bolt and nylock nut
HEADSET Integrated 1-1/8"" threadless, Campy-style, full cartridge bearings
FORK 20"" BMX, 2mm thick Hi-Ten, tapered blades, 1-1/8"" threadless, 5mm Cr-Mo dropouts for 3/8"" axle
FRAME Hi-Ten plain gauge steel, 20.5"" top tube, externally relieved MID BB shell and integrated head tube, hydra-formed chainstays, seatstay-mounted U-brake bosses, 5mm thick 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 342mm
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