Sport Tourers
1981Yamaha XJ 750 Seca
19 fields on record
The 1981 Yamaha XJ 750 Seca is a sport-touring middleweight that appeals to riders seeking responsive performance with practical everyday usability. Its air-cooled inline-four engine delivers smooth acceleration and reliable power, while shaft drive and manageable weight make it ideal for both commuting and weekend rides. Best known for combining accessible sportiness with touring capability in an affordable package.
- Capacity
- 748.0 ccm
- Engine
- In-line four
- Gearbox
- 5-speed
- Wet weight
- 241.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 82.0 HP (60.3 kW) @ 9000 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as an early sport tourer, it blends respectable straight-line performance with a shaft-driven drivetrain suited to mile-munching rather than track days.
- Built for
- It has the classic early-80s inline-four charm, with DOHC performance and a shaft drive giving it a smooth, low-maintenance touring feel over raw sportiness.
- Not ideal for
- It is not for riders seeking modern sportbike agility, off-road capability, or the lightest possible city commuter.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 748.0 ccm
- Power
- 82.0 HP (60.3 kW) @ 9000 RPM
- Engine type
- In-line four
- Power/weight ratio
- 0.3402 HP/kg (wet)
- Bore x stroke
- 65.0 x 56.4 mm
- Compression
- 9.2:1
- Cooling system
- Air
- Valves per cylinder
- 2
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Shaft
Performance
- Top speed
- 204.0 km/h (126.8 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Dual disc
- Rear brakes
- Expanding brake
- Front tyre
- 3.25-19
- Rear tyre
- 120/90-18
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 | 1981 | 1982 |
|---|---|---|
| Capacity | 748 cc | 748 cc |
| Fuel capacity | 18 L | 18 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha XJ 750 Seca?
The 1981 Yamaha XJ 750 Seca has a Capacity of 748.0 ccm (45.65 cubic inches).
What engine power does the Yamaha XJ 750 Seca have?
The 1981 Yamaha XJ 750 Seca has a Power of 82.0 HP (60.3 kW) @ 9000 RPM.
How many gears does the Yamaha XJ 750 Seca have?
The 1981 Yamaha XJ 750 Seca has a Gearbox of 5-speed.
How much does the Yamaha XJ 750 Seca weigh?
The 1981 Yamaha XJ 750 Seca has a Wet weight of 241.0 kg (531.3 pounds).
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