2008 Big Dog K-9

Motorcyclist Online helps you research the used 2008 Big Dog K-9 before buying this Chopper bike. The 2008 K9 is made in USA. Big Dog first introduced the K9 model in 2006. With front Hydraulic Disc brakes that will securely stop this motorcycle ...     read more
Big Dog K9 2008
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2008 Big Dog K9

2008 Big Dog K-9 Base


Some called the Big Dog K-9, a nine-foot-long chopper, the flagship of Big Dog’s 2008 line. Introduced in 2006, the K-9 replaced the Bulldog in the Wichita, Kansas-based company’s line of high-end custom bikes made on a production line. Like all Big Dog machines, it has a 1916cc, 45-degree, V-twin S&S motor and a Baker Drivetrain six-speed transmission, mounted on the right side to distribute the weight more evenly and improve balance. The company made just 3500 motorcycles in 2008 and folded in 2011, a victim of the recession, so these bikes are something of a collector’s item.

Changes to the K-9 in 2008 were fairly minor. While some models got fuel injectors in 2008, replacing the Super G carburetor that Big Dog had been using for years, K-9 buyers could choose to have the new fuel injectors or stay with the tried-and-true carburetor. Big Dog reworked the clutch for all of its motorcycles in 2008, making shifting easier and smoother.

Long and low, clearing the ground by just four inches, the chopper has a 39-degree rake, with 12-inch oversize telescopic forks and a four-inch backbone stretch. The characteristic stretched-teardrop-shaped steel gas tank holds 4.4 gallons. The rear suspension, an adjustable rear shock with a twin-sided swing arm, is wired to allow the addition of an optional aftermarket air-ride suspension kit. It works with a fat 300mm tire. Four-piston brakes, front and back, provide stopping power.

Since Big Dog took a custom order for each bike it made, the K-9’s options list is a long one. A buyer chose the color from a palette of seven base paints and then selected one of the 70 graphic packages. A raft of accessories were available: a variety of mounting plates, an assortment of pegs, backrest pads, tail bags, tool rolls, sissy bars, a luggage rack, tools, several different seat styles, tinted or clear windscreens in two different sizes, and a custom suspension kit were just a few of the choices. If a buyer was really practical, he or she could even add an oil temperature gauge to an instrument panel that features the standard speedometer, odometer, and tachometer.

The low, 24.3-inch seat was designed to put the rider in a comfortable position to reach the angled handlebars and controls. In fact, in terms of comfort, the only complaint one rider had was that the kickstand was awkwardly placed. It has balanced steering that lets the rider negotiate turns easily despite the heavy front end and big rear tire.

But truly, no one rides a chopper for its handling. A chopper is about its looks, and the K-9’s looks draw crowds and admiration.

New For 2008
  • Redesigned clutch for easier shifting
  • Optional fuel injection

2008 Big Dog K-9 Specs

  • Model: K-9
  • Engine Type: 1916cc, air-cooled, two-cylinder
  • Bore and Stroke: 4.13 inches x 4.38 inches
  • Compression ratio: 9.61:1
  • Valve Train: OHV–Pushrod, two valves per cylinder
  • Induction: S&S Super G carburetor
  • Ignition: Electric
  • Transmission: Baker manual six-speed
  • Final Drive: Belt
  • Fuel Capacity: 4.4 gallons
  • Estimated Fuel Economy: N/A
  • Brakes (Front): Hydraulic disc
  • Brakes (Rear): Hydraulic disc
  • Suspension (Front): Telescopic fork
  • Suspension (Rear): Twin-sided swing arm
  • Wheelbase: 82 inches
  • Rake: 39 degrees
  • Trail: N/A
  • Seat Height: 24.3 inches
  • Curb Weight: 701 pounds
  • Tires (Front): MH90-21 56H
  • Tires (Rear): 300/35 R18 87V


  • 10.5-inch sport windscreen
  • 12-inch sissy bar kit
  • Cross-country trail bag
  • Lowboy backrest pad with mounting plate
  • Luggage rack
  • Oil temperature gauge
  • Push solo seat
  • Tool kit
  • Air-ride suspension kit
  • Streamline solo seat

Key Competitors For The 2008 Big Dog K-9

  • Big Bear Choppers Devil’s Advocate
  • OCC Web
  • American Ironhorse Texas Chopper

Available K-9 Sub Models

2008 Big Dog K-9 Base Buyer's Guide 2008 Big Dog K-9 Base
N/A / N/A
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