2006 Big Dog Mastiff



Dallas, TX
Stock #:
Item #:


2006 Big Dog Mastiff with a 117 ci / 6 Speed, SuperTrapp Exhaust, Twin HiFlow Intake and LOW MILES!!!!!

The Mastiff is one of five models offered by Big Dog for the '06 model year. While the Mastiff has been around since 2001, '06 proved to be the year that redefined the motorcycle from previous models. In an effort to stay on the cutting edge of motorcycle styling, the new Mastiff has been geared more toward the long and low Pro-Street style of bikes (as has the Pitbull), while the remainder of the models are more in line with chopper styling.

The Mastiff's frame has been totally redesigned from previous models. The in-house manufactured frame boasts a 6-inch backbone stretch and stock-length downtubes. Also manufactured in-house is the A-frame swingarm designed to cradle the Avon 250/40-18 rear tire. This is no doubt in response to customers looking for more and more rubber out back. Of the four other models Big Dog produces, only the Chopper shares the 250mm rear tire, while all the others wear a 300mm tire. Both the frame and swingarm are coated with a heavy protective layer of powdercoat. Leveling out the front of the bike is a 41mm frontend comprised of 2-inch-over tubes and a set of 3-degree raked triple-trees, which hang from a 39-degree raked neck. Providing a good contact patch with the asphalt is an MH120/70/21 Avon tire, designed to work well with the 250 out back. Providing cushioning at the rear of the bike is a pair of manually adjustable shocks.

Powering the Mastiff is an S&S; 117-inch, overhead-valve, air-cooled, 45-degree V-Twin engine. Big Dog has worked closely with S&S; over the years. This relationship has culminated in an engine design that includes a proprietary cam design, Super G carburetor, electronic compression releases, and a specially designed fin on the heads and cylinders that not only aids in cooling but also results in less high-frequency noise emanating from the engine. All of the S&S; powerplants for '06 are assembled at Big Dog's Wichita plant.

Located just behind the engine is what Big Dog calls its balanced drive system (BDS), which consists of a wet-chain primary and clutch setup that relocates the starter from its traditional position and places it down and farther back. In addition to the primary, another major component of the BDS is a Baker six-speed right-side-drive transmission. The result of all these components working in conjunction with one another is a narrower, more centered and balanced drivetrain. Final drive consists of a 1-1/8-inch carbon-fiber belt running on a pair of hard-anodized, Teflon-coated pulleys.

Sheetmetal for the Mastiff consists of a pair of steel fenders and a long, flowing, one-piece gas tank complete with a single filler and a nice touch in the way of a paint-saver screwed into the tank's bung. What appears to be an oil tank is actually an enclosure for the bike's battery and electronics. So where's the oil stored, you ask? It resides in a 3-quart curved reservoir sitting just in front of the rear tire. This relocation aids in cooling the oil as well as keeping heat away from the electronics package.

Send Seller a Message Trade in a Motorcycle Request a Test Ride

Send Seller a message

Hello, I'm interested in your 2006 Mastiff.

Make an Offer

Hello, I'm interested in making an offer on your 2006 Mastiff.

Request Trade In

Hello, I'm interested in trading in my bike for your 2006 Mastiff.

Request Test Ride

Hello, I'm interested in taking your 2006 Mastiff for a test ride.

Tell a Friend

Note: A link to this motorcycle listing will be added to the end of your message.