Built around Harley-Davidson's custom - cruiser motorcycle platform, the 2006 Harley-Davidson FLSTNI Softail Deluxe pairs a 1442.2 cc (88 cu in) v2, four-stroke architecture with road-focused gearing. In factory specification, maximum torque reaches 115.3 Nm (85 lb-ft) at 3,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 95.3 x 101.6 mm (3.8 x 4.0 inches) with a 8.9:1 compression ratio.
On the scales, the FLSTNI Softail Deluxe measures 328.4 kg (724 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 622 mm (24.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,638 mm (64.5 in) wheelbase engineered for planted straight-line stability. The 18.92-liter (5 US gal) fuel tank paired with a rated consumption of 5 L/100 km provides an estimated theoretical range of roughly 378 km (235 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 2 indexed model years from 2005 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~378 km (235 mi)
Engine
Displacement1442.2 ccm (88.00 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Torque115.3 Nm (11.8 kgf-m or 85.0 ft.lbs) @ 3000 RPM
Compression8.9:1
Bore x Stroke95.3 x 101.6 mm (3.8 x 4.0 inches)
Valves/Cylinder2
Fuel SystemInjection. Electronic Sequential Port Fuel Injection (ESPFI )
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
ClutchMulti-plate clutch with diaphragm spring in oil bath
Performance
Fuel Consumption5.00 litres/100 km (20.0 km/l or 47.04 mpg)
Greenhouse Gases116.0 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustChrome, over/under shotgun with shorty duals
Chassis
Rake32.0°
Wheelbase1638 mm (64.5 inches)
Ground Clearance122 mm (4.8 inches)
Wheels & Brakes
Front TyreMT90-B16
Rear TyreMU85-B16
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight314.3 kg (693.0 pounds)
Weight incl.328.4 kg (724.0 pounds)
Seat Height622 mm (24.5 inches) If adjustable, lowest setting.
Alt. Seat Height673 mm (26.5 inches) If adjustable, highest setting.
Overall Length2405 mm (94.7 inches)
Fuel Capacity18.92 litres (5.00 US gallons)
Other
Color OptionsVivid black, black cherry, black pearl, deep cobalt, brandy wine sunglo, two-tone glacier white pearl and vivid black, two-tone glacier white pearl and deep cobalt.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
