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The original Dirt Quake, back in 2012, was Sideburn magazine’s idea to get novices racing their motorcycles, motorcycles that don’t fit into normal motorcycle sport, and at minimum cost.

For 2014 Sideburn has combined with See See Motorcycles of Portland, OR to take Dirt Quake to a Grand National Championship track in the Pacific North-West.

Dirt Quake USA is a two-day event, with the opportunity to watch the pros and top amateurs race pure flat track bikes on Saturday, then race or point at complete novices compete on totally unfit-for-purpose bikes in the special Dirt Quake classes on Sunday. On Staurday night is a camp out with live music.

Sunday is purely for road bikes and the emphasis is on fun and enjoying the experience, not red mist and race bikes.

It’s also a show for spectators of all ages and will include dangerous stunts; live music; and the unforgettable spectacle of watching the exceptionally unprepared try to race the wilfully inappropriate.

Spectators pay $10 on the gate and $10 for camping on Saturday night.


Castle Rock, WA

(58 miles north of Portland, OR; 117 miles south of Seattle, WA).


Saturday May 31 - Jun 1, 2014.



Pre-party at See See Motorcycles, Portland, OR. 7pm till late.


Pro flat track – come watch how the experienced guys on the proper bikes do it. Hang out, ask stupid questions, dance like no one’s watching to DJs and live bands, camp out.


9-10 Tech inspection

10.15 Riders’ meeting

10.30 Practice

12.00 Racing!

5.00 Finals

7.00 Farewell drinks in downtown Castle Rock. Details to follow.

Race Classes


Bike must be road legal, with lights (taped up) and license plate. Supermoto or road legal enduro bikes are not inappropriate. Dirt Quake is for bikes no other race will have.


Road legal street tracker or street scrambler (subject to approval. See below). Needs license plate and working tail light.


It’s got to be a chopper, bobber or custom, baby! Hardtails and softails accepted. Stock-looking factory customs should be in Inappropriate Road Bike class. Need to be road legal (negotiable).


Any bike from the three classes is suitable to race in the female only class.


Every bike must be pre-approved. Send a photo of your bike and which class you want to enter. Email it to:

Once your bike is approved we will send details on how to pay.

All entries must be paid in advance.

$50 to race (includes gate entry and racer goodie bag).


We will be giving bike a tech inspection to make sure they’re not complete death traps.

As far as clothing goes, we demand: helmet, boots, gloves, eye protection (shield or goggles), long sleeves and long trousers. We recommend leathers and/or all the armour and pads you can get your hands on.

Dirt Quake is fun, but it’s still motorcycle racing and racing is dangerous.


For Saturday Noon – 5pm Sponsored by The Moto Attic

Contact details will be tma@themotoattic.com

Go to The Moto Attic


Hashtag your Dirt Quake USA preparation photo, either as a racer or spectator preparing your road trip to get and win…

Use #dqusa

A different winner every month up to the event.