2023 Specialized P.1

★★★★★ 4.1 139 reviews

$507.00
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$507.00
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Product details

Management number 236283830 Release Date 2026/07/09 List Price $152.10 Model Number 236283830
Category
P.Series P.1 — Specialized Dirt Jumper
P.Series P.1
20" Dirt Jumper

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.

  • Sleek Simplicity: Durable lightweight alloy frame built to hit the ground. A lot. No unnecessary complexity — just you and the bike.
  • Sized for All: From a 20-inch tire legit dirt jumper to a 27.5-inch category-crossing trail cruiser that can be backflipped.
  • Reimagine Your Ride: Dropper post ready, derailleur compatible, adjustable dropouts. Ride from your door to the bike park and session along the way.
  • Tough Tech: Boost spaced rear end for added stiffness, tapered headtube, threaded bottom-bracket — extremely resilient and easy to maintain.
  • Kicker Tires: Wrapped in Specialized Kicker 2.1" tires — accept up to 2.35" trail tires for grip anywhere: street, dirt, or skatepark.
  • Youth-Ready: 19mm OD handlebars, short reach brake levers, and grips sized for smaller hands.

The P.Series stands up to the unique demands of dirt jumping. It's going to hit the ground. A lot. That's the point.

Lightweight Rigid Fork
Specialized engineered rigid fork, geo corrected to 80mm of travel makes fork upgrades easy — designed for dirt jump durability.
Sized for Smaller Riders
19mm OD handlebars, short reach brake levers, and grips sized for smaller hands help young riders stay in control.
Kicker Tires
Specialized Kicker Sport 2.1" tires find grip anywhere — street, dirt, or at the skatepark.
Versatile Setup
Dropper post compatible, derailleur compatible, adjustable dropouts — single speed or geared, your choice.
Boost Spacing
Boost spaced rear end adds stiffness, tapered headtube, and threaded bottom bracket make P.Series extremely resilient.
Tire Clearance
Wrapped in 2.1" Kicker tires but accepts up to 2.35" trail tires — grip and speed anywhere.
20"
Crank Length 115
Handlebar Width 600
Stem Length 35
Saddle Width 110
Seatpost Length 200
Stack 429
Reach 310
Head-Tube Length 90
Head-Tube Angle 68.5°
B-B Height 259
B-B Drop 5
Trail 61
Fork Length (full) 380
Fork Rake/Offset 40
Front-Center 520
Chain-Stay Length 320
Wheelbase 840
Top-Tube Length (horizontal) 449
Bike Stand-Over Height 561
Seat-Tube Length 265
Seat-Tube Angle 72°
Wheel Size 20"
Frameset
Frame
Specialized P.1, A1 Premium Alloy, 20", 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
Seat Binder
Quick Release, 34.9mm ID Clamp
Suspension
Fork
Specialized A1 Alloy, 20" Rigid, Tapered Alloy Steer Tube, 15x110TA, 372mm Axle to Crown
Brakes
Front Brake
Tektro HD-J285, Hydraulic Disc, 160mm Rotor
Rear Brake
Tektro HD-J285, Hydraulic Disc, 160mm Rotor
Drivetrain
Chainrings
30T
Crankset
Specialized P.series, 52mm CL, 115mm Length
Chain
KMC Z1, 1/2x3/32", Single Speed
Cassette
13T SS Cog
Bottom Bracket
BSA 73mm
Wheels & Tires
Rims
Specialized P.Series, 20", 32h, 26mm ID, Disc Brake Only
Spokes
Stainless, 14g
Front Tire
Specialized Kicker Sport, 20x2.1"
Rear Tire
Specialized Kicker Sport, 20x2.1"
Front Hub
Alloy, 6-Bolt, 28H, 15x110 Boost
Rear Hub
Alloy, 6-Bolt, 28H, 12x148 Boost, 11-speed compatible
Inner Tubes
20" Inner Tube, SV
Cockpit
Stem
3D-forged alloy, 31.8mm, 6-degree rise
Handlebars
Mini Rise, Alloy Double Butted, 6-degree Backsweep, 600mm Width, 31.8mm, 19mm Bar End Diameter
Grips
Specialized Trail Grips, 19mm bar end diameter, lock-on
Seatpost
Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm
Saddle
Specialized P.series, Steel Rails
Accessories
Pedals
Specialized Platform Pedal
Weight
Weight
9.37kg (20 lb, 10.5 oz)

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