Naked Motorcycles
1988Yamaha SRX 400
23 fields on record
The 1988 Yamaha SRX 400 is a Japanese roadster with a 399cc air-cooled four-stroke single making 33 hp. It weighs 147 kg dry and has a 5-speed gearbox and a 15-litre tank.
- Capacity
- 399.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 147.0 kg
- Seat height
- 770 mm
- Power
- 33.0 HP (24.6 kW) @ 7000 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Naked bike built for its class - everyday, practical use.
- Built for
- A naked bike from Yamaha, built around a 399cc engine - a real production model, but this profile is formula-generated from its class and spec sheet rather than individually reviewed.
- Not ideal for
- Not for serious performance or off-road use.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usReliability & safety
Bike Reliability score, safety recalls and owner complaintsBike Reliability
How the score works →27
out of 100Below average
The Yamaha SRX 400 passed its annual roadworthiness test first time 75.4% of the time, 6.4 points below expected for bikes of the same age and mileage. That beats 27% of models.
Bikes first registered in 1988 have 53 tests, too few for their own score, so this covers every year.
75.4%Passed first time
15.1%Failed outright
9.5%Fixed during test
29,000Typical miles
915Tests
Pass rate by miles ridden
All years of this model.
Score by year first registered
17
12
19
39
58
19851986198719901991
Against its rivals · ranks 5 of 6
| # | Model (all years) | Score | Tests |
|---|---|---|---|
| 1 | Royal Enfield 350 Bullet | 75 Good | 8,617 |
| 2 | Honda XBR 500 | 65 Good | 9,052 |
| 3 | Yamaha SR 500 | 40 Average | 722 |
| 4 | Suzuki GS 450 E | 33 Below average | 563 |
| 5 | Yamaha SRX 400 | 27 Below average | 915 |
| 6 | Kawasaki GPZ 305 Belt Drive | 20 Below average | 641 |
Rivals are the most-viewed bikes on MotorcycleDB in the same category and engine size, from within three years of this model.
From British annual roadworthiness tests, 2005-2025. Contains public sector information licensed under the Open Government Licence v3.0 (DVSA MOT test data, Great Britain). How Bike Reliability works.
Engine
- Capacity
- 399.0 ccm
- Power
- 33.0 HP (24.6 kW) @ 7000 RPM
- Torque
- 33.0 Nm (3.4 kgf-m)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.2245 HP/kg (dry)
- Compression
- 9.2:1
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- TCI
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1384 mm
- Seat height
- 770 mm
- Dry weight
- 147.0 kg
- Fuel capacity
- 15.00 litres
Chassis & suspension
- Front suspension
- Telescopic forks
- Rear suspension
- Dual shocks
Brakes & wheels
- Front brakes
- Single 320mm disc 4 piston caliper
- Front brakes diameter
- 320 mm
- Rear brakes
- Single disc
Specs last verified against published sources: .
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 | 1985 | 1986 | 1988 | 1989 | 1990 |
|---|---|---|---|---|---|
| Capacity | 399 cc | 399 cc | 399 cc | 399 cc | 399 cc |
| Dry weight | 147 kg | 147 kg | 147 kg | 147 kg | 147 kg |
| Seat height | 770 mm | 770 mm | 770 mm | 770 mm | 770 mm |
| Fuel capacity | 15 L | 15 L | 15 L | 15 L | 15 L |
| Bike Reliability ⓘ | 17 Poor | 12 Poor | Too few tests | Too few tests | 39 Below average |
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 SRX 400?
The 1988 Yamaha SRX 400 has a Capacity of 399.0 ccm (24.35 cubic inches).
What engine power does the Yamaha SRX 400 have?
The 1988 Yamaha SRX 400 has a Power of 33.0 HP (24.6 kW) @ 7000 RPM.
How many gears does the Yamaha SRX 400 have?
The 1988 Yamaha SRX 400 has a Gearbox of 5-speed.
What is the torque of the Yamaha SRX 400?
The 1988 Yamaha SRX 400 has a Torque of 33.0 Nm (3.4 kgf-m or 24.3 ft.lbs).
How much does the Yamaha SRX 400 weigh?
The 1988 Yamaha SRX 400 has a Dry weight of 147.0 kg (324.1 pounds).
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