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2006 · Cruiser · Buyer's Guide
The Factory Bobber Done Raw
Strip a Dyna back to what actually matters and this is what's left standing. The 1449 cc air-cooled 45° V-twin is rubber-mounted in the frame, good for 67 hp and 85 lb-ft, and it runs through a six-speed gearbox. Everything else is subtraction: solo seat, mini ape-hangers, a Fat Bob tank, no fairing, no screen, no clutter. That is the entire design brief, and it was followed. In a class where stance and metal do the talking, this generation scores a flat 10 for chopper style, and it earns that score standing still in a parking lot.
It rides more civilly than it looks. The 25.8 in (655 mm) seat and 668 lb (303 kg) of wet weight carried low make it easy to place at walking pace, and it holds a line at highway speed without wandering. It suits the rider who wants presence and ritual over a spec sheet, and who treats the aftermarket as part of the plan rather than an afterthought. The honest caveat is range and reach: 4.7 gal at 36 mpg, a solo seat, no luggage, and no electronic safety net. Read the maintenance history below before you sign anything.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 67 hp (50 kW) |
|---|---|
| Torque | 85 lb-ft (115 Nm) |
| Displacement | 1449 cc |
| Engine | 45° V-twin |
| Cooling | Air-cooled |
| Gearbox | 6-speed |
| Front brake | 300 mm |
| Front tire | 100/90-19 |
| Rear tire | 160/70-17 |
| Seat height | 25.8 in (655 mm) |
| Wet weight | 668 lb (303 kg) |
| Fuel capacity | 4.7 gal (17.8 L) |
| Top speed | 115 mph (185 km/h) |
| Fuel economy | 36 mpg (US) |
Equipment check
Chassis
First thing you notice is where your hands end up. The mini apes put your wrists high and wide with your shoulders open, and the low seat drops your hips well under the tank, so you sit in this bike rather than on it. Thumb the starter and the air-cooled twin settles into an uneven, loping idle you feel in the grips and the pegs before you really hear it. At a light throttle opening that sound is the best thing the machine does. Roll away and the shakes organize themselves into a rhythm instead of noise. At 60 mph on a state highway it stops fidgeting and simply tracks, bars steady, tank buzzing faintly against your knees. Your neck takes all the wind. Nobody who buys one of these seems to mind.
I've been collecting notes on this one the slow way, over years: riders talking at rallies, owners catching me after a demo ride, and a steady trickle of mail from people weighing one up. What comes back barely shifts. The warmth is all about how it runs; the reservations are all about how long anyone wants to stay on it.
The engine carries the praise. Owners keep coming back to its low-rev punch and unhurried delivery, and they say it stays entertaining without asking them to go fast. Almost as many describe a chassis that never fights them: balanced, willing through a set of bends, settled when pushed. The six-speed earns steady credit for clean shifts and a calmer cruise, and the satin finish and bare hardware hold up to the looks they pull.
Complaints cluster around endurance. The buzz reaching the grips and footpegs is the first thing named, and it's why plenty of riders keep slab miles short. The brake is next: one disc up front, sufficient and nothing more, with owners wishing for a second when they carry a passenger or press on. The reach to the bars takes the rest of the blame for fatigue.
Transmission safety recall (false neutral indication)
Certain 2006 Dyna models built between June and October 2005 were recalled (NHTSA 05V-537) due to a transmission defect that could cause a false neutral indication, potentially allowing the motorcycle to roll while in gear. Dealers repaired the transmission under warranty.
Inner primary bearing failure
Premature wear of the inner primary bearing is a well-documented issue on 2006 Dyna models, often occurring around 15,000–20,000 miles. Symptoms include a whining noise from the primary case. Harley initially offered free replacement every 15,000 miles but later rescinded the policy.
Stator failure
The charging system stator is prone to early failure, often around 15,000 miles, leaving the rider stranded. Replacement of stator and voltage regulator is typically required.
8-degree fuel injector rough idle
Early-production 2006 models used 8-degree fuel injectors that caused rough idle and hesitation when pulling away. Harley later offered a free upgrade to 25-degree injectors to resolve the issue.
Front end clunking noise
Some owners report a pronounced clunk from the front end during compression or steering, possibly due to loose steering head bearings or fork internals. Not all dealers could identify or fix the root cause consistently.
Where this Harley-Davidson Dyna Street Bob FXDB pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Wet weight
Top speed
Seat height
Forget spec-sheet bragging. Here's who the Dyna Street Bob FXDB is actually built for.
This is your bike and your crowd. It looks right parked in a row of thousands, sounds right rolling in, and the solo seat keeps it honest about being one rider's machine.
Made for A1A — Florida Atlantic Coast · Black Hills / Sturgis Rally Hub · Daytona Main Street / Bike Week
Small towns and old highways suit it well. Plan around 4.7 gal at 36 mpg and pack light, because there's no luggage and no passenger seat, and the days will still be good ones.
Made for Acadia National Park · Austin / Handbuilt Motorcycle Show · Blue Ridge Parkway
Be honest with yourself here. No wind protection, no cruise control, no luggage and a solo seat all work against the long western days. It can cover the miles, it just won't make them easy.
Made for Beartooth Highway · Blue Ridge Parkway · Going-to-the-Sun Road
If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
Any price note compares both bikes at the same age — the youngest age both have on the used market — against this Harley-Davidson Dyna Street Bob FXDB. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.
