Specialized P.4 Mountain Dirt Jump Bike
P.4
$1,499.99$2,099.99
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$79.99
Ride it Risk-Free for 30 Days!
Every bike comes with our 30-Day Ride Guarantee. Take it home, ride it like you own it. If it’s not right, bring it back within 30 days & we’ll refund your purchase or help you find the right bike.
Normal wear and tear is expected—because the only way to know it’s the right ride is to ride it.
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Specialized P.4 Dirt Jump Mountain Bike: The Ultimate Platform for Progression
The Specialized P.4 Dirt Jump Mountain Bike is the best choice for riders who want a modern, bombproof dirt jump bike that can grow with their skills. Whether you’re riding pump tracks, skateparks, bike parks, or flowing singletrack, the P.4 delivers a simple, confidence-inspiring ride that prioritizes durability, control, and progression.
Key Benefits for Riders
Purpose-Built Strength and Durability
At the heart of the P.4 is a fully butted A1 Premium Alloy frame designed to withstand the repeated impacts and abuse unique to dirt jumping. A tapered head tube, boost-spaced rear end, and threaded bottom bracket increase stiffness and long-term reliability, while adjustable sliding dropouts allow riders to run the bike single-speed or geared as their riding style evolves.
Confidence-Inspiring Suspension and Handling
The Marzocchi Bomber Z1 fork with 100mm of travel provides predictable, tunable suspension that absorbs hard landings without compromising steering precision. Paired with 27.5-inch wheels and Specialized Kicker tires, the P.4 offers fast rolling speed, consistent grip, and stable handling on dirt, concrete, and wood features.
Simple, Reliable Drivetrain
A single-speed drivetrain keeps the bike quiet, reliable, and low maintenance. The forged Specialized P.Series crankset with a 30T chainring and durable KMC chain delivers consistent power transfer, allowing riders to focus entirely on technique, timing, and progression rather than shifting.
Why Choose the Specialized P.4?
If you want one dirt jump bike that blends modern geometry, proven durability, and adaptable design, the Specialized P.4 stands out as the most versatile and future-proof option. It’s built to take hits, inspire confidence, and support riders as they push their limits.
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 Fork:
Marzocchi Bomber Z1, 27.5", 100mm Travel, Grip Damper, 1.5 Tapered Steerer, 15x110mm Boost, 44mm Offset Bottom Bracket:
BSA 73mm Cassette:
13T Chain:
KMC Z1, 1/2x3/32", Single Speed Front Brake:
Radius CX7, Mechanical Disc, 180mm Rotor Rear Brake:
Sram Level T, Hydraulic Disc, 160mm Rotor 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 Front Tire:
Specialized Kicker Sport, 27.5x2.1" Rear Tire:
Specialized Kicker Sport, 27.5x2.1" Handlebars:
Specialized P.Series MTB Dirt, 6061 alloy, 9-degree backsweep, 6-degree upsweep, 38mm rise, 750mm width, 31.8mm clamp Stem:
35mm Specialized Alloy Trail Stem Seat Post:
Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm Saddle:
Specialized P.series, Steel Rails Pedals:
Specialized Platform Pedal Grips:
Specialized Trail Grips, lock-on Bike Weight:
26 lb, 7.3 oz 
What We Do:
Full Professional Assembly
Our certified mechanics put together every component—down to the tiniest bolt—ensuring your bike meets the highest standards of safety and performance.
Precise Tuning & Adjustment
Once built, we tune gears, adjust brakes, true the wheels, and dial in every detail to guarantee a smooth, flawless ride from day one.
Careful Repackaging
After your bike passes inspection, we carefully repackage it with easy-to-follow instructions. The result? A simple, stress-free assembly process in the comfort of your home.
Why It Matters:
By taking the time to ensure every aspect of your bike is perfect, we’re giving you more than just a product—we’re offering peace of mind. You’ll hit the road or trail knowing that your bike has been fine-tuned by professionals who care about quality as much as you do.
Processing Time & Shipping:
Since we treat each bike with personalized attention, please allow 2–3 business days for this service before your order ships. If you need expedited processing, simply reach out to us at info@peachtreebikes.com — we’ll do our best to accommodate your timeline.