Oil and filter change
≈ 8,000 km or 1 year
JASO MA or MA2 approved four-stroke motorcycle oil (JASO MB on scooters): an “energy conserving” car oil makes the wet clutch slip. Change it more often in city use or on track.
Source [1]Fat Boy (Twin Cam 88) · 2000–2006
Harley-Davidson Fat Boy (Twin Cam 88) 1450 · 63 hp (2000 to 2006)
The Harley-Davidson Fat Boy (Twin Cam 88) 1450 uses the Harley Twin Cam 88 petrol engine with 63 hp.
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Technical specifications
- Fuel
- Petrol
- Power
- 63 PS / 46 kW
- Displacement
- 1 450 cm³
- Cylinders
- 2
- Engine code
- Harley Twin Cam 88
- Period covered
- 2000–2006
- Documented market
- Europe
Transmission
- Manual · 5 speeds
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] AutoKarnet
This version
63 hp (46 kW), belt final drive, 5-speed manual. Built from 2000 to 2006.
AutoKarnet advice
Body style and inspection points
On a motorcycle, tyres, final drive and brakes matter as much as the oil change. Check the tyre manufacturing date, steering-head play and fork-tube seals; an oil film on a tube means a fork seal needs replacing. A notched steering bearing can be felt when braking at low speed.
AutoKarnet advice
Comparing generations
Other documented generations of this model: • Fat Boy (Twin Cam 96) (2007–2011) : cruiser, 67–67 hp. A first registration near a generation change does not identify the car on its own: check the body style and powertrain before using a service schedule.
AutoKarnet advice
Maintenance and records
≈: estimated reference — the vehicle’s service indicator prevails.
Brake fluid
Every 2 years
Replace the fluid in both circuits (and the hydraulic clutch if fitted), whatever the mileage; dark fluid has absorbed moisture.
Source [1]Fork oil
≈ 30,000 km
Fork oil change and seal check; an oil film on the tubes means a seal needs replacing before it contaminates the brake caliper.
Source [1]Final drive belt
≈ 16,000 km
Check the tension, cuts and teeth at each service; a trapped stone can cut it. No lubrication: the belt is cleaned with water.
Source [1]Spark plugs
Every 48,000 km
Replace the full set; worn plugs raise consumption and cause misfires.
Source [1]Air filter
Every 16,000 km
Replace more often in dusty conditions.
Source [1]Questions about this version (3)
Which engine is in the Harley-Davidson Fat Boy (Twin Cam 88) 1450?
The Harley Twin Cam 88 petrol engine (1 450 cc), 63 hp (46 kW).
AutoKarnet advice
Which oil for the Harley-Davidson Fat Boy 1450?
A JASO MA2 10W-40 four-stroke motorcycle oil suited to the Harley Twin Cam 88 engine.
AutoKarnet advice
How do I check this page matches my car?
This page covers Harley-Davidson Fat Boy (Twin Cam 88) 1450 63 hp, cruiser, 2000–2006, with 63 hp (46 kW), Harley Twin Cam 88, 1 450 cm³, 5-speed manual, 2000–2006. Compare these details with the registration document and gearbox identification. The designation Harley Twin Cam 88 may cover several revisions: a VIN is still needed to confirm part numbers.
AutoKarnet advice
Documentary sources
- [1] Rédaction AutoKarnet
AutoKarnet · FR · Europe · Synthèse éditoriale AutoKarnet · Accessed 09/10/2026