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Specialized P.4 BMX Dirt Jump Mountain Bike

Specialized P.4 BMX Dirt Jump Mountain Bike

28% OFF
Regular price $1,499.99
Regular price $2,099.99 Sale price $1,499.99
Sale Sold out


Specialized mountain bike size chart


 Shipped Direct to Your Home

Our Platinum Pro Assembly fee of only $89 (reg. $100) will be added at checkout. Your Specialized Bicycle will be built, fine-tuned and expertly packaged by our certified team of bike techs. Your new bike comes 90% built, reassembly is quick and easy with our video guides. Your new bike ships within 3-5 business days.

Bicycle Warehosue now offers optional Route Package Protection. Route Package Protection offers peace of mind for your shipments by providing shipping insurance. This coverage ensures that if your package is lost in transit, stolen, or damaged, you're protected. For a small percentage of the total value of your order, Route will promptly generate a replacement order or issue a refund if you no longer want the items.


At Bicycle Warehouse your satisfaction is our top priority. We understand the importance of your happiness with every purchase, which is why we proudly offer our 30 Day Love It Guarantee for your unused gear and 14 days on all bikes. Our exchange and returns process is quick and easy.

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Get your dream bike today with FREE financing (12 months same as cash, on approved credit). For more information visit our financing page and get approved.

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Unleash Your Inner Bike Dreams with the Redesigned P.4 BMX Dirt Jump Mountain Bike! Calling all thrill-seeking daredevils and gravity-defying wizards of the bike world! Introducing the all-new Specialized P.Series BMX Dirt Jump Mountain Bike—an exhilarating gateway to a life on two wheels. Get ready to conquer the skies, dominate dirt jumps, and redefine what it means to ride with unmatched finesse.

Masterfully Reinvented: Specialized conjured up a masterpiece that's as lightweight as it is unbreakable. Crafted from the finest alloy, this frame laughs in the face of gravity and scoffs at rough landings. It's your partner-in-crime through thick and thin, promising relentless durability across all frame and wheel size options. Say goodbye to the ordinary, and embrace the extraordinary.

Slick Simplicity: Complexity, begone! In a world obsessed with gizmos and gadgets, the P.Series proudly stands as a beacon of sleek simplicity. Shedding the excess and focusing on what truly matters, this bike is tailor-made for those who demand perfection in every jump. Whether you're a seasoned pro or an aspiring acrobat, the P.Series has your back—even when you're airborne.

Redefine Your Ride: Buckle up for a mind-bending journey as the P.Series blurs the lines between fantasy and reality. Dropper ready? Check. Derailleur compatible? You bet. Adjustable dropouts for those who demand nothing but perfection? Absolutely. This isn't just a bike—it's a portal to new realms of exhilaration. Whether you're charging through your neighborhood or conquering the wild trails, the P.Series is your magic carpet to adventure.

Indestructible Innovations: Prepare to be spellbound by the ingenious construction of the P.Series. With a boost-spaced rear end for unrivaled stiffness and control, a tapered headtube for precision handling, and a threaded bottom bracket for easy maintenance, this bike is a true work of art. Wrapped in the spellbinding embrace of its new 2.1” Kicker tire (but hungry for a 2.35” trail tire), you'll cling to any surface and soar like a champion.

Embrace the unknown, rewrite the rules, and let the Specialized P.4 BMX Dirt Jump Mountain Bike be your partner in gravity-defying crime. Unleash the wizard within and redefine your reality—one jump at a time. Your journey starts now.


  • 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.



13T SS Cog



Bottom Bracket

BSA 73mm


Specialized P.series, Forged, 24mm Spindle, 52mm CL, 165mm Length


KMC Z1, 1/2x3/32", Single Speed


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


Specialized P.Series, 27.5", 32h, 26mm ID, Disc Brake Only

Inner Tubes

Schrader, 40mm valve

Front Tire

Specialzied Kicker Sport, 27.5x2.1"

Rear Tire

Specialzied Kicker Sport, 27.5x2.1"

Seat Binder

Alloy, single-bolt, 34.9mm


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


Specialized Alloy Trail Stem


Specialized P.series, Steel Rails


Specialized P.Series MTB Dirt, 6061 alloy, 9-degree backsweep, 6-degree upsweep, 38mm rise, 750mm width, 31.8mm clamp


Specialized Trail Grips, lock-on


Specialized, 6061 alloy, 2-bolt clamp, 0mm setback, 30.9mm


Specialized Platform Pedal


Stainless, 14g


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°
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