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Triumph Trident 660 (2021+) Maintenance Schedule

Triumph Trident Sapphire Black Angle left profile

This is the maintenance schedule for the Triumph Trident 660, a mid-size roadster from Triumph released in 2021.

The Triumph Trident bears the same name as its forebear from many years earlier, but it’s an all-new motorcycle. It has an inline three-cylinder engine (a “triple”) with 660cc of displacement, running a compression ratio of 11.95:1 for max power of 60 kW or 80 hp at 10250 rpm in unrestricted form.

The Trident 660 is also available in learner-legal form in many markets, including Europe, the UK, Australia, and New Zealand. Parts and maintenance are the same — it’s restricted but nothing fundamental changed in the build.

Being an all-new bike, it doesn’t bear in common much with the Street Triple 660, the LAMS-approved bike for some markets. But it does effectively take its market share.

The Triumph Trident 660 shares an engine and basic platform with Triumph’s entry-level adventure sport bike, the Triumph Tiger Sport 660.

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What you need to service the Triumph Trident 660

PartTriumph Trident 660
Engine oilSemi or fully synthetic 10W-40 oil that’s API SH or JASO MA or higher, e.g. Castrol Power 1 Racing 4T 10W-40.
Oil filterTriumph part T1218001 or Hiflofiltro part HF204RC (common to many Triumph motorcycles)
Spark plugNGK CR9EK spark plug.
Air filterDNA air filter P-TR6N21-01 is a well-respected aftermarket filter.
CoolantTriumph D2053 OAT coolant (50-50 pre-mixed). You can substitute this with Motorex M3.0, another OAT coolant.
BatteryA Yuasa YTX9-BS battery
BulbsAll LED, you need Triumph parts (but they’re unlikely to fail!)
Brake fluidUse DOT 4, e.g. Castrol DOT 4
GreaseAn NLGI 2 spec lithium soap-based grease, e.g. Royal Purple NLGI 2 grease
ChainMaintain your chain with a high quality lubricant like Motul chain lubricant or Motul chain paste
Parts for Triumph Trident 660 service

Maintenance schedule for the Triumph Trident 660

Below is the maintenance schedule for the Triumph Trident 660.

The table is the same content as from the manual, though re-formatted slightly to make it more easy to read.


  • Some of the items are marked for inspection/service every day. Make sure you do these with the annual service, too.
  • Items marked [T] need specialist Triumph equipment
mi x 10000.66121824
km x 1000110203040Every
Engine and oil cooler – check for leaksDay
Engine oil – renew (Castrol Power 1 Racing 4T 10W-40, Motul 7100 10W-40)Year
Engine oil filter – renew (HF204RC)Year
Fuel System and Engine Management
Fuel system – check for leaksDay
Exhaust butterfly valve cables – check cable for chafing, cracks or damage. Replace if necessaryYear
Air filter – renew (replace more often if consistently riding in wet or dusty conditions)
Spark plugs – renew (NGK CR9EK)
Cooling system
Cooling system – check for leaksDay
Coolant level – check/adjustDay
Cooling system – check hoses for chafing, cracks or damage. Replace if necessary
Coolant – renew (Zerex G05)3 years
Clutch — check operationDay
Clutch cable – check function and adjust as necessaryDay
Clutch lever pivot – clean/greaseYear
Valve clearances – check/ adjust
Camshaft timing – check/ adjust
Wheels and Tires
Wheels – inspect for damageDay
Tyre wear/tyre damage – checkDay
Tyre pressures – check/adjustDay
Wheel bearings – check for wear/smooth operationYear
Steering and Suspension
Steering – check for free operationDay
Front and rear suspension – check for leaks/ smooth operationDay
Headstock bearings – check/adjustYear
Rear suspension unit and linkage – lubricate
Fork oil – renew
Swinging arm spindle – lubricate
Brake system – check operationDay
Brake pads – check wear levelsDay
Brake fluid levels – checkDay
Brake fluid – renew (Castrol DOT 4)2 years
Final drive
Drive chain slack – check/ adjustDay
Drive chain – lubricate (Motul chain paste)Year
Drive chain – wear checkYear
Drive chain rubbing strip – check for wear, cracks, or damageYear
Lights, instruments and electrical systems – check/adjustDay
Bank angle indicators – check for wearDay
Side stand – check for wear/smooth operationDay
[T] Instruments, chassis ECM, keyless ECM and engine ECM–check for latest calibration download using the Triumph diagnostic toolYear
[T] Autoscan – Carry out a full Autoscan using the Triumph diagnostic toolYear
[T] Carry out all outstanding Service Bulletin and warranty workYear
Carry out road testYear
[T] Complete the service record book and reset the service indicatorYear
Triumph Trident 660 Maintenance Schedule

About the Triumph Trident 660

Triumph Tident 660 riding position
Triumph Tident 660 riding position

The Triumph Trident 660 is an entry-level naked roadster, Triumph’s entrant into the “middleweight sports” category, a rapidly expanding market for motorcycles.

It’s designed to appeal to a wide range of riders:

  • Casual riders who don’t want the most intense sportbike possible, and don’t want to spend that much
  • New riders on their learner licenses (A2/LAMS) who want the same bike, just conforming to legal requirements
  • People with a sense of nostalgia about the triples of old…

Unlike the Triumph Speed Triple and Street Triple bikes, the Trident 660 is not a high-strung sportbike. It’s not a bike people would buy intending to track, and indeed its components — while not cheap as chips — are lower end than the other bikes, and aren’t designed to be pushed too hard.

But that isn’t to say the Trident 660 isn’t well-equipped — it is. It comes with competent tech right out of the box, including

  • A ride by wire throttle
  • Standard ABS (of course)
  • Switchable traction control
  • Two ride modes
  • A TFT display
  • All-LED lighting
  • A slip and assist clutch

The bike revs happily above 10000 rpm — though not much further. But the speed and grace with which it gets there means that it’s a bike you’ll really enjoy flinging about back country roads.

The suspension and braking area also capable too. It comes with Showa upside down forks, though they’re non-adjustable, and a Showa preload-adjustable monoshock with a remote reservoir.

The non-adjustable nature of the front suspension is just one thing that differentiates the Triumph Trident 660 from higher-end alternatives, like the Aprilia Tuono 660, which has fully adjustable suspension (and costs about 50% more).

Some competitors to the Triumph Trident 660 are other middleweight motorcycles like the Kawasaki Z650, Honda CB650R, the Yamaha MT-07, and the Ducati Monster 659, which are all available in learner-legal incarnations in some markets.

Manual for the Triumph Trident 660

The above maintenance schedule and service intervals come straight from the user manual for the Triumph Trident 660.

Triumph Trident 660 maintenance schedule table screenshot

You can download the manual for the Trident 660 directly from Triumph’s website.

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