Whatchoo know ‘bout going big, boy? I can tell you what our DF5 Factory riders know and that is that there ain’t no street, park, or jump line that can throw off the 2012 Assault. Designed and refined through feedback from our riders, the assault is a burly little low slung rig designed to trick, flip, stick and hit. Boom!

Diamondback DF5 Pro Factory Team Rider Kelly McGarry sums it up like this: “The Assault is one of my favorite bikes in the Diamondback line up. It’s quick and snappy in the turns and fly’s predictably and smooth. The geometry works well for my style of riding, whether that be two, one, or zero wheels on the ground!”

The 2012 Diamondback Assault boasts of a 6061-T6 Aluminum frame with a tapered head tube, Mission formed top tube and steel reinforced horizontal BMX dropouts, these frames are stout and fully capable of going big. And weighing in at a respectable 4.5 lbs makes this one of the lighter dirt jump frames on the market.

Rocking a single speed specific horizontal dropout keeps things clean and simple. 69° head and 72° seat angles combined with significantly compact 15.3" chainstays and a 22” sloping top tube make the Assaults easy to throw around and manual for days.

The Assault comes spec’d with a Fox 32 “831” RLC “FIT" fork. The fork has100mm of travel, a 15mm quick release thru axle and is internally adjustable to 110mm or 120mm. This keeps the front end snappy and agile. Tubular chromoly cranks provide a solid jumping platform while the Alienation wheelset provide a stout landing gear for re-entry. A single rear Shimano M505 hydraulic disc brake with a 6-bolt XT SM-RT76 160mm rotor provide ample stopping power. And we finish off this package with a Gravity Light stem and 800mm bars and an Diamondback signature Pivotal seat and Alienation Billy Club post.

Diamondback is a brand that built its reputation on top of the line BMX bikes. 30 years later, we’re bridging that gap from our high end BMX to our high end mountain and road bike s. The Assault and Assault 2 are just the rigs to do this.


  • 6061-T-6 Aluminum Assault Dirt Jump Frame
  • FOX 831 100mm w/QR15
  • 48spline sealed cartridge BB w/25t DB alloy ring, 12t cog
  • Alienation Skylark frt / Delinquent rr Rims w/cartridge bearing hubs
  • Shimano Hydraulic rear disc brake w/XT rotor

Bike Specs

Sizes MD 22" Top Tube 
Frame Assualt Dirt Jump 6061-T6 Aluminum frame w/Taper head tube, Mission Formed Top Tube, ISCG 05, steel reinforced horizontal BMX dropouts.
Fork Fox 32 "831" RLC "FIT" 100mm Travel, 15QR (internally adjustable to 110 or 120mm)
Rear Shock N/A
Cranks Tubular Cromo 48 Spline, 175mm
Bottom Bracket Euro Sealed Cartridge with 4 Sealed Bearings, 19mm spindle
F. Derailleur N/A
R. Derailleur N/A
Shifter N/A
Brake Levers Shimano Deore M505 radial w/ hinge clamp, reach adj.
Brakes Shimano M505 Hydraulic Disc w/ 6-bolt, XT SM-RT76 160mm Rotor
Cassette 12t cog
Rims Alienation 32h Skylark front / Delinquent rear rims
Tires Kenda 26x2.35 Small Block 8 frt/ 26x2.1 NPJ rear tires
Pedals DB cromo replaceable pin Platform BMX pedal
Handlebar Gravity Lite 25mm rise 800mm width
Stem Gravity, 2014 Aluminum, 31.8, 45mm ext. 6degree rise
Seatpost Alienation Billy Club Pivotal 30.9
Seat DB BMX, Pivotal Saddle
Headset FSA No.57 Taper, 1.5 / 1 1/8" Alloy cups, Sealed Cartridge
Colors Kiwi White
Chain KMC-HL710 Half link chain
Hubset (F) 32h Alloy Sealed bearing, 15mm thru axle (R) 32h Alloy single speed w/ CNC disc mount, Sealed Bearing, 10mm nutted axle
Spokes White 14g Stainless Steel
Grips DB4L Lock-on 135mm D2 Kraton
Extras Owner’s manual, Chainstay Protector, Clear Coat
Note Specifications Subject to Change


Size MD 22" Top Tube
Seat Tube Length ** 13.0mm
Standover Height 27.0mm
Top Tube Length * 22.0mm
Head Tube Length 125.0mm
Head Angle 69.0mm
Seat Angle 72.0mm
Wheel Base 1055.0mm
Chain Stay Length 390.0mm
Fork Offset 45.0mm
BB Height 330.0mm
Stem Length 45.0mm
Handlebar Width 800.0mm
Crank Length 175.0mm
Seat Post Length 200.0mm
* Measured Horizontally ** Measured from Center

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