Triumph Street Triple S 660 (2020-2022) Maintenance Schedule

This is the maintenance schedule with associated service intervals for the Triumph Street Triple S (which people call the Street Triple S 660, to distinguish it from the former 765cc Street Triple S released in some markets), revamped from 2020 from the previous gen 2017-2019 Street Triple S.

Here are all the Triumph Street Triple motorcycles, in case you’re looking for another one:

The A2/LAMS-compliant 2020+ Triumph Street Triple S 660 has a restricted and reduced capacity 660cc engine. It makes a peak of 40 kW (52 hp) at 11250 rpm through the rev range, with peak torque of 60 Nm at 5250 rpm, giving it a lively ride. Peak power (still in restricted form) is about 10% higher than the earlier version. Many people who try it out think “I can’t believe this is learner-legal!”

The fun thing about the 2020+ Street Triple S is that it can be unlocked by a Triumph dealer for a nominal fee so you can re-register it as an unrestricted bike. Unrestricted, peak power jumps to a respectable 70 kW (94 hp) at the same rpm.

The maintenance schedule for the Street Triple S 660 very similar to those for other motorcycles with similar engines in the Triumph Street Triple Series, like the full spec Street Triple S 765.

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Triumph Street Triple S 660 Service Intervals

Overall, the Triumph Street Triple S 660 (2020+) has 6000 mile / 10000 km service intervals. At every service, change the oil and filter, and look through the service checklist for other items to check.

Every 12000 miles / 20000 km, change the spark plugs, and check the valve clearances.

Regularly maintain your Street Triple’s drive chain (keeping it clean, lubricated, and tensioned), particularly if you ride your Street Triple aggressively.

Finally, be sure to regularly replace your brake fluid and your engine coolant, as per the schedule below.

What you need to service the Triumph Street Triple S 660 (2020+)

Firstly, you need to see if you have the basic motorcycle maintenance tools — nothing shocking, just things like a paddock stand, oil filter wrench, and so on.

The following is a list of specific consumables for the Triumph Street Triple S 660 (2020+).

PartTriumph Street Triple 660 (2020+) spec
Engine oilThe manual suggests semi or fully synthetic 10W/40 or 10W/50 motorcycle engine oil which meets specification API SH (or higher) and JASO MA, such as Castrol Power 1 4T 10W-50 (full synthetic).
Oil filterReplace the oil filter every time you change the oil. Use Triumph part number T1218001. You can also use HifloFiltro part HF204RC.
Spark plugsUse NGK spark plugs with code CR9EIA9. Make sure they’re gapped to 0.9 mm with an appropriate spark plug gap tool.
Air filterUse Triumph part number T2200957 or K&N equivalent part TB-7617.
Brake fluidChange your brake fluid every 2 years. Use Castrol DOT 4 for Triumph motorcycles.
CoolantChange your coolant every 4 years. Triumph uses HD4X, a HOAT (Hybrid Organic Acid Technology) coolant with a 50% ethylene glycol mix. The “hybrid” part is that it contains silicates. You can use a silicate-enriched HOAT equivalent, like PEAK OET European Vehicles Blue. See our analysis of equivalents to Triumph HD4X
Brake padsFront: Triumph part T2020377, or EBC part FA226HH (you need two sets)
Rear: Triumph part T2024901, EBC part FA213HH (just need one set)

EBC HH brake pads give better bite and feel and last longer, though over time they may wear your rotors more quickly than softer pads.
ChainMaintain your chain with a Motul chain care kit.
Consumables for Triumph Street Triple S 660 (2020+)

Maintenance Schedule for Triumph Street Triple S 660

The following is the list of maintenance operations to be done on the Street Triple S 660.

Daily checks

Below is the checklist of items to examine on the Street Triple S 660 every day, or before every ride.

Daily checks — Triumph Street Triple S 660
Engine and oil cooler – check for leaks
Fuel system – check for leaks, chafing etc.
Cooling system – check for leaks
Coolant level – check/adjust
Clutch cable – check/adjust
Wheels – inspect for damage
Tire wear/tire damage – check
Tire pressures – check/adjust
Brake pads – check wear levels
Brake master cylinders – check for fluid leaks
Brake calipers – check for fluid leaks and seized pistons
Brake fluid levels – check
Drive chain slack – check/adjust
Drive chain rubbing strip – check
Wheel bearings – check for wear/ smooth operation
Steering – check for free operation
Forks – check for leaks/smooth operation
Bank angle indicators – inspect visually for wear
Fasteners – inspect visually for security
Side stand – check operation
Lights, instruments and electrical systems – check
Triumph Street Triple S 660 Daily Checks

Major items service schedule

Below is the maintenance schedule for major items like oil changes, etc.


  • Do the “daily checks” along with the other items in the maintenance schedule.
  • For the 1K service, if you get to 6 months without having done 1K, do the service anyway.
  • Camshaft timing — you only need to do this at the first 12K mi / 20K km service.
  • [T] is for items that need Triumph specialist tools.
mi x 10000.66121824
km x 1000110203040Every
Engine oil – replace (Castrol Power 1 4T 10W-50)
Engine oil filter – replace (HF204RC)
Throttle body plate (butterfly) – check/clean
[T] Autoscan – carry out a full Autoscan using the Triumph diagnostic tool (if you have one)Year
[T] ABS modulator – check for stored DTCsYear
Secondary air injection system – check/clean
Air cleaner – replace (TB-7617)
Throttle bodies – balance
Fuel hoses – replace4 years
Evaporative loss hoses – replace4 years
Ignition system
Spark plugs – check
Spark plugs – replace (NGK CR9EIA9)
Coolant – replace (Zerex G05)3 years
Valve clearances – check/adjust
Camshaft timing – adjust
Fork oil – replace
Steering head bearings – check/adjust
Steering head bearings – lubricate
Rear suspension linkage – check/lubricate
Brake fluid – replace (Castrol DOT 4)2 years
Drive chain – wear check 800 km (500 mi)
Drive chain – lubricate (Motul chain care kit)300 km (200 mi)
Triumph Street Triple S 660- Maintenance Schedule

Wheels and Tires

Below are the tire sizes and recommended tire pressures for the Striple S 660.

WheelRim sizeTire sizeTire pressure (cold)
Front17 x 3.5 in120/70 ZR 17 58W2.34 bar / 34 psi
Rear17 x 5.5 in180/55 ZR 17 73 W2.9 bar / 42 psi
Tire sizes and pressures

You can fit most sport bike tyres to the Street Triple S, as it takes a very standard modern tyre size.

About the Triumph Street Triple S 660 (2020+)

The Triumph Street Triple has been a mainstay of Triumph’s line-up since launched over a decade earlier.

The core of the Street Triple has always been something like “a 600cc-class engine but in a sporty (and yet more upright) body, with tuning for more midrange torque rather than an uncompromising top-end focus”.

The Street Triple used to be the road-going companion to the Daytona 675 race bike, but since the Daytona is now a highly exclusive machine, the Street Triple (in its various incarnations) has taken over duty as both a road and track weapon.

The Street Triple S is the entry-level bike of the range that goes all the way up to the 765cc Street Triple RS, which is basically track-spec but with road-going gear.

In 2017, Triumph increased the displacement of their engines from 675cc to 765cc, but also released a 660cc version that’s restrictable for certain markets where you have maximum power for learners. This is the Triumph Street Triple S 660.

To confuse things slightly, there were two versions of the Street Triple S released in 2017 — the 765cc version and the 660cc version. The 660cc version was restrictable to lower power output (35 kW / 47 hp) for compliance in Europe/Australia and a few other places.

As of 2020, there’s just the Street Triple S in 660cc configuration (so we don’t have to say Street Triple S 660 but we want to be absolutely clear).

The Triumph Street Triple S 660 is lower spec in a number of ways:

  • Engine capacity: The 660 has a 660 cc engine, compared with the 765cc motor on the bigger R and RS bikes. It’s still a DOHC liquid-cooled triple.
  • Front brakes — Nissin two-piston calipers, vs. the Brembo 4-piston calipers on the R and RS (in two different variations)
  • Suspension — The front fork is a non-adjustable Showa shock, and the rear is a Showa shock adjustable for preload only. This contrasts with the fully-adjustable suspension on both the R and RS bikes.
  • Instruments — the Street Triple S has an analogue + LCD display, compared to the TFT instruments on the R and RS

Despite this, the Triumph Street Triple 660 is a high-quality motorcycle. Jumping on board, you quickly forget that it’s a “learner” with its aggressive riding position, rev-happy engine, and ample torque down low. Needless to say, this is a bike that can get you into trouble.

The updated 2020 Triumph Street Triple S 660 has new bodywork, twin LED headlights with LED DRLs, new mirrors, and new colours.

Triumph added another middleweight sport bike option from 2024 to the lineup in the form of the Triumph Daytona 660, based on the new 660 platform shared with the Trident and Tiger Sport 660.

The Street Triple S is no longer sold new, with the other, newer 660 bikes having taken its place.

Manual for the Triumph Street Triple S 660

Triumph Street Triple S 660 (2020) maintenance schedule screenshot

The above maintenance schedule comes directly from the user’s manual for the Triumph Street Triple S, which is available on the Triumph website.

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