Oil and filter change
≈ 16,000 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]Bonneville 790 · 2001–2006
Triumph Bonneville 790 790 · 61 hp (2001 to 2006)
The Triumph Bonneville 790 790 uses the Triumph 790 twin air petrol engine with 61 hp.
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Technical specifications
- Fuel
- Petrol
- Power
- 61 PS / 45 kW
- Displacement
- 790 cm³
- Cylinders
- 2
- Engine code
- Triumph 790 twin air
- Period covered
- 2001–2006
- 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
61 hp (45 kW), chain final drive, 5-speed manual. Built from 2001 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: • Bonneville 865 (2007–2015) : retro bike, 68–68 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]Chain kit (chain and sprockets)
≈ 25,000 km
Lubricate and check the tension every 500 to 1,000 km and after rain; replace chain and sprockets together when the chain no longer holds its tension or the teeth are hooked.
Source [1]Spark plugs
Every 16,000 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]Valve clearance
Every 16,000 km
Check and adjust if needed, often together with the plugs; too little clearance burns the valves, too much makes the engine noisy.
Source [1]Questions about this version (3)
Which engine is in the Triumph Bonneville 790 790?
The Triumph 790 twin air petrol engine (790 cc), 61 hp (45 kW).
AutoKarnet advice
Which oil for the Triumph Bonneville 790?
A JASO MA2 10W-40 four-stroke motorcycle oil suited to the Triumph 790 twin air engine.
AutoKarnet advice
How do I check this page matches my car?
This page covers Triumph Bonneville 790 790 61 hp, retro bike, 2001–2006, with 61 hp (45 kW), Triumph 790 twin air, 790 cm³, 5-speed manual, 2001–2006. Compare these details with the registration document and gearbox identification. The designation Triumph 790 twin air 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