2023 Specialized P4 Satin Aluminum/ Black

SKU: 91923-5127
This totally redesigned P.Series gives riders of all sizes a jumping off point to a life on bikes.

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Delivery time: 1-9 Business Days

This totally redesigned P.Series gives riders of all sizes a jumping off point to a life on bikes. The lightweight, but tough alloy frame is designed to take all the hits and keep rolling—across all frame and wheel size options. Our approach to these robust bikes centers around delivering a simple, high-quality platform that's versatile for all riders, and packs in category-first features that make a difference to the rider.

SLEEK SIMPLICITY — The latest and greatest levers, adjustment switches, and complex cabling have their place—but not here. For the rider focusing on progression, eliminating every other variable is paramount. Starting with the durable lightweight alloy frame, P.Series stands up to unique demands of a bike that only dirt jump riders know. It’s going to hit the ground. A lot.

SIZED FOR ALL — In such a niche corner of the cycling world, a purpose-built bike like the P.Series used to be available in minimal size options. That’s why we took a step back to design a new range of inclusive sizes. From a 20-inch tire legit dirt jumper to a 27.5-inch category-crossing trail cruiser that can be backflipped.

REIMAGINE YOUR RIDE — Instead of compromising on its heart and soul (flipping and whipping through the air), we expanded its capability. It’s dropper ready, derailleur compatible, and uses adjustable dropouts. You can ride it out your door all the way to the bike park—and make a pitstop to session along the way.

TOUGH TECH — Built with a boost spaced rear end for added stiffness, this burly wheel setup along with tapered headtube, and threaded bottom-bracket make P.Series extremely resilient and easy to maintain. Wrapped in its new 2.1” Kicker tire—but accepting up to a 2.35” trail tire—you’ll find grip and make speed anywhere.

  • Marzocchi Bomber, high performance and tunable.
  • Lightweight and strong single-speed P.Series wheelset.
  • Specialized Kicker tires find grip anywhere, street, dirt, or at the skatepark.


  • Cassette: 13T SS Cog
  • Chainrings: 30T
  • Bottom Bracket: BSA 73mm
  • Crankset: Specialized P.series, Forged, 24mm Spindle, 52mm CL, 165mm Length
  • Chain: KMC Z1, 1/2x3/32", Single Speed
  • Fork: Marzocchi Bomber Z1, 27.5", 100mm Travel, Grip Damper, 1.5 Tapered Steerer, 15x110 Boost, 44mm Offset
  • Front Hub: Alloy, sealed cartridge bearings, 15x110mm thru-axle, 6-bolt, 32h
  • Rear Hub: Alloy, Single Speed, sealed cartridge bearings, 12x148mm thru-axle, 6-bolt, 32h
  • Rims: Specialized P.Series, 27.5", 32h, 26mm ID, Disc Brake Only
  • Inner Tubes: Schrader, 40mm valve
  • Front Tire: Specialized Kicker Sport, 27.5x2.1"
  • Rear Tire: Specialized Kicker Sport, 27.5x2.1"
  • Spokes: Stainless, 14g
  • Seat Binder: Alloy, single-bolt, 34.9mm
  • Frame: Specialized P.4, A1 Premium Alloy, 27.5", Fully Butted Tubing, Tapered Head Tube, BSA 73mm BB Shell, 12x148TA Sliding Dropouts, Single Speed or Geared Compatible, 52mm CL, Internal cable routing, 30.9 Seat Tube, Dropper Post Compatible, 26" Wheel Compatible
  • Front Brake: Radius CX7, Mechanical Disc, 180mm Rotor
  • Rear Brake: Sram Level T, Hydraulic Disc, 160mm Rotor
  • Stem: Specialized Alloy Trail Stem
  • Saddle: Specialized P.series, Steel Rails
  • Handlebars: Specialized P.Series MTB Dirt, 6061 alloy, 9-degree backsweep, 6-degree upsweep, 38mm rise, 750mm width, 31.8mm clamp
  • Grips: Specialized Trail Grips, lock-on
  • SeatPost: Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm
  • Pedals: Specialized Platform Pedal
  • Weight: 12.0kg (26 lb, 7.3 oz)

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice. // eslint-disable-line react/no-danger.


Crank Length 165mm
Handlebar Width 750mm
Stem Length 35mm
Saddle Width 110mm
Seatpost Length 200mm
Stack 588mm
Reach 445mm
Head-Tube Length 120mm
Head-Tube Angle 68.5°
B-B Height 318mm
B-B Drop 34mm
Trail 91mm
Fork Length (full) 492mm
Fork Rake/Offset 44mm
Front-Center 711mm
Chain-Stay Length 385mm
Wheelbase 1094mm
Top-Tube Length (horizontal) 636mm
Bike Stand-Over Height 697mm
Seat-Tube Length 350mm
Seat-Tube Angle 72°