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
|Part||Triumph Trident 660|
|Engine oil||Semi 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 filter||Triumph part T1218001 or Hiflofiltro part HF204RC (common to many Triumph motorcycles)|
|Spark plug||NGK CR9EK spark plug.|
|Air filter||DNA air filter P-TR6N21-01 is a well-respected aftermarket filter.|
|Coolant||Triumph D2053 OAT coolant (50-50 pre-mixed). You can substitute this with Motorex M3.0, another OAT coolant.|
|Battery||A Yuasa YTX9-BS battery|
|Bulbs||All LED, you need Triumph parts (but they’re unlikely to fail!)|
|Brake fluid||Use DOT 4, e.g. Castrol DOT 4|
|Grease||An NLGI 2 spec lithium soap-based grease, e.g. Royal Purple NLGI 2 grease|
|Chain||Maintain your chain with a high quality lubricant like Motul chain lubricant or Motul chain paste|
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 1000||0.6||6||12||18||24|
|km x 1000||1||10||20||30||40||Every|
|Engine and oil cooler – check for leaks||•||•||•||•||•||Day|
|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 leaks||•||•||•||•||•||Day|
|Exhaust butterfly valve cables – check cable for chafing, cracks or damage. Replace if necessary||•||•||•||•||Year|
|Air filter – renew (replace more often if consistently riding in wet or dusty conditions)||•||•|
|Spark plugs – renew (NGK CR9EK)||•||•|
|Cooling system – check for leaks||•||•||•||•||•||Day|
|Coolant level – check/adjust||•||•||•||•||•||Day|
|Cooling system – check hoses for chafing, cracks or damage. Replace if necessary||•||•||•||•|
|Coolant – renew (Zerex G05)||3 years|
|Clutch — check operation||•||•||•||•||•||Day|
|Clutch cable – check function and adjust as necessary||•||•||•||•||•||Day|
|Clutch lever pivot – clean/grease||•||•||•||•||Year|
|Valve clearances – check/ adjust||•||•|
|Camshaft timing – check/ adjust||•||•|
|Wheels and Tires|
|Wheels – inspect for damage||•||•||•||•||•||Day|
|Tyre wear/tyre damage – check||•||•||•||•||•||Day|
|Tyre pressures – check/adjust||•||•||•||•||•||Day|
|Wheel bearings – check for wear/smooth operation||•||•||Year|
|Steering and Suspension|
|Steering – check for free operation||•||•||•||•||•||Day|
|Front and rear suspension – check for leaks/ smooth operation||•||•||•||•||•||Day|
|Headstock bearings – check/adjust||•||•||•||•||•||Year|
|Rear suspension unit and linkage – lubricate||•||•|
|Fork oil – renew||•|
|Swinging arm spindle – lubricate||•||•|
|Brake system – check operation||•||•||•||•||•||Day|
|Brake pads – check wear levels||•||•||•||•||•||Day|
|Brake fluid levels – check||•||•||•||•||•||Day|
|Brake fluid – renew (Castrol DOT 4)||2 years|
|Drive chain slack – check/ adjust||•||•||•||•||•||Day|
|Drive chain – lubricate (Motul chain paste)||•||•||•||•||Year|
|Drive chain – wear check||•||•||•||•||Year|
|Drive chain rubbing strip – check for wear, cracks, or damage||•||•||•||•||Year|
|Lights, instruments and electrical systems – check/adjust||•||•||•||•||Day|
|Bank angle indicators – check for wear||•||•||•||•||•||Day|
|Side stand – check for wear/smooth operation||•||•||•||•||•||Day|
|[T] Instruments, chassis ECM, keyless ECM and engine ECM–check for latest calibration download using the Triumph diagnostic tool||•||•||•||•||Year|
|[T] Autoscan – Carry out a full Autoscan using the Triumph diagnostic tool||•||•||•||•||Year|
|[T] Carry out all outstanding Service Bulletin and warranty work||•||•||•||•||Year|
|Carry out road test||•||•||•||•||Year|
|[T] Complete the service record book and reset the service indicator||•||•||•||•||Year|
About the Triumph Trident 660
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.
You can download the manual for the Trident 660 directly from Triumph’s website.