1988Harley-Davidson FLST 1340 Heritage Softail

19 fields on record

The 1988 Harley-Davidson FLST 1340 Heritage Softail is a cruiser built for riders seeking classic styling with modern comfort. Known for its hidden rear shock absorbers and low-slung profile, this 1337cc V-twin delivers authentic retro appeal while maintaining reliable performance and smooth belt-drive cruising.

Capacity: 1337.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 5-speed
Wet weight: 314.0 kg
Seat height: Not on record
Know it? Add it →
Power: 58.0 HP (42.7 kW) @ 5000 RPM

⇄ Compare with another bike All model years ⚠ Recalls listed (1)

What’s new for the 1988 Harley-Davidson FLST 1340 Heritage Softail

vs the 1987

Spec	1987	1988
Top speed	165.0 km/h (102.5 mph)	149.0 km/h (92.6 mph)
Wet weight	298.0 kg (657.0 pounds)	314.0 kg (692.3 pounds)

Other years 1987 1988 1989 1990 1991

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering30%

City riding45%

Daily riding55%

Touring70%

Two-up65%

Track10%

Best for: It's built for relaxed cruising and boulevard riding where style and torque-driven presence matter more than outright speed.
Built for: It delivers a classic Harley experience with deep V-twin rumble, laid-back ergonomics, and unmistakable Softail styling.
Not ideal for: This is not the machine for riders seeking sharp cornering ability, high-speed thrills, or any off-road capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Full specifications

Engine

Capacity: 1337.0 ccm
Power: 58.0 HP (42.7 kW) @ 5000 RPM
Engine type: V-Twin, four-stroke
Power/weight ratio: 0.1847 HP/kg (wet)
Bore x stroke: 88.8 x 108.0 mm
Compression: 8.5:1
Cooling system: Air
Valves per cylinder: 2
Torque: Not on record - add it

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Belt

Performance

Top speed: 149.0 km/h (92.6 mph)

Dimensions & weight

Wet weight: 314.0 kg
Fuel capacity: 13.00 litres
Seat height: Not on record - add it
Dry weight: Not on record - add it

Brakes & wheels

Front brakes: Single disc
Rear brakes: Single disc
Front tyre: MT 90-16
Rear tyre: MT 90-16

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	1987	1988	1989	1990	1991
Capacity	1337 cc	1337 cc	1337 cc	1337 cc	1337 cc
Fuel capacity	13 L	13 L	13 L	13 L	13 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Safety Recalls

⚠ 1 recall may apply

STRUCTURE:BODY:BUMPERSAug 1993 · 93E030000

THE SCREWS ISSUED IN A KIT TO MOUNT THE FENDER AND AN ACCESSORY FRONT BUMPER ONTO THE MOTORCYCLES CAN BREAK, CAUSING THE FENDER AND BUMPER TO LOOSEN AND POSSIBLY CONTACT THE FRONT TIRE.

Risk: CONTACT BETWEEN THE FENDER AND BUMPER AND THE FRONTTIRE MAY RESULT IN TIRE FAILURE AND POSSIBLE LOSS OF VEHICLE CONTROL.

Remedy: REPLACE THE SCREWS IN THE KITS WHICH ARE LOCATED AT DEALERSHIPS. OWNERS OF INSTALLED KITS WILL BE NOTIFIED TO HAVE THE MOUNTING SCREWS REPLACED.

These recalls cover some 1988 bikes of this model. Whether one applies to a specific bike, and whether the repair has already been done, depends on its VIN — check your VIN with NHTSA or ask a dealer.

Source: NHTSA. View all Harley-Davidson recalls →