Triumph Speed 400 398 · 40 hp (2024 to date)

Oil and filter change

≈ 10,000 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.

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.

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.

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.

Spark plugs

Every 10,000 km

Replace the full set; worn plugs raise consumption and cause misfires.

Air filter

Every 20,000 km

Replace more often in dusty conditions.

Valve clearance

Every 20,000 km

Check and adjust if needed, often together with the plugs; too little clearance burns the valves, too much makes the engine noisy.

Coolant

Every 3 years

Replace the coolant and check the hoses and radiator; check the level cold between services.