This is the maintenance schedule with associated service intervals for the Triumph Street Twin motorcycle, launched in 2021 to replace 2017-2020 Triumph Street Twin.
It’s very similar to those for other motorcycles with similar engines in the Triumph Modern Classics, notably the Triumph Bonneville T100 (2021+).
Like the outgoing model, the Triumph Street Twin (2021+) is based on a 900cc liquid-cooled parallel twin with a 270-degree crank. It’s a sporty, basic roadster, with a single front disc brake and a single gauge which doesn’t include a tachometer.
What you need to service the Triumph Street Twin (2021+)
Servicing the Triumph Street Twin is just like servicing another modern British 900cc twin. You need the below parts and consumables for a standard maintenance job.
|Part||Triumph 900cc Street Twin spec|
|Oil||Triumph recommends 10W/40 or 10W/50 semi or fully synthetic motorcycle engine oil that meets specification API SH (or higher) and JASO MA, such as Castrol Power 1 Racing 4T 10W-40 (fully synthetic) engine oil, sold as Castrol Power RS Racing 4T 10W-40 (fully synthetic) in some countries. A high-quality alternative is Motul 7100.|
|Oil filter||Replace the oil filter every time you change the oil. Use Triumph part number T1218001, which fits a lot of Triumph motorcycles. You can also use Hiflofiltro HF204RC which has a neat nut on the end.|
|Brake fluid||Triumph motorcycles need DOT 4 brake fluid (the 900cc range has a clutch cable, so you don’t need fluid for the clutch).|
|Coolant||Triumph uses Hybrid Organic Acid Technology coolant with a 50% ethylene glycol mix. Zerex Asian Vehicle Coolant is a HOAT coolant that meets this spec.|
|Front brake pads||Standard brake pads code is T2026565 (for the Brembo caliper). The part number for EBC brakes is FA322/4HH.|
|Rear brake pads||Use original part number T2022955. The equivalent part number for EBC brakes is FA214/2HH.|
|Spark plugs||NGK code LMAR8A-9. Note they’re sold individually. Make sure they’re gapped to 0.9mm (+0.0-0.1mm) with an appropriate spark plug gap tool.|
|Air filter||The part number for the air filter is T2201057. You can also use K&N part TB-9016.|
Maintenance Schedule for Triumph Street Twin (2021+)
Below is the maintenance schedule for the 2021+ Triumph Street Twin.
It’s quite similar to the Street Twin from 2017-2020, but the order changed and there are a few less items to maintain.
Service intervals for the Street Twin are every 16,000 km or 10,000 miles — quite wide.
Daily / pre-ride checks
A number of things in the maintenance schedule are daily or pre-ride checks. Do these regularly as well as along with the scheduled maintenance.
|Triumph Street Twin – Daily / Pre-ride checks|
|Engine – check for leaks|
|Cooling system – check for leaks|
|Coolant level – check/adjust|
|Clutch cable – check function and adjust as necessary|
|Tire wear/tire damage – check|
|Tire pressures – check/adjust|
|Wheels – inspect for damage|
|Wheels – check wheels for broken or damaged spokes and check spoke tightness|
|Steering – check for free operation|
|Front and rear suspension – check for damage, leaks, and smooth operation|
|Brake pads – check wear levels|
|Brake fluid levels – check|
|Drive chain slack – check/adjust|
|All lights, instruments and electrical systems – check/adjust|
|Fasteners – inspect visually for security|
|Bank angle indicators – check visually for wear|
|Side stand/Center stand – lubricate/check operation|
Below is the the chain maintenance guidance for the Triumph Street Twin.
|Chain maintenance item||Every|
|Drive chain – check wear||500 miles (800 km)|
|Drive chain – lubricate (Motul chain paste)||200 miles (300 km)|
(Or after riding in rain or washing motorcycle)
Below is the maintenance schedule for the 2021+ Street Twin. Do the daily checks along with the service recommended below.
- At the end of the maintenance schedule, continue it in the pattern shown (everything is every 1, 2, or 4 service intervals)
- Carry out the initial maintenance at that period or after six months, whichever comes earlier.
- [T] Some maintenance items need Triumph official or a mechanic’s computer tools
|km x 1000||1*||16||32||48||64|
|mi x 1000||Every||0.6*||10||20||30||40|
|Engine oil – replace (Castrol Power 1 Racing 4T 10W-40)||Year||•||•||•||•||•|
|Engine oil filter – replace (HF204RC)||Year||•||•||•||•||•|
|Fuel system – check for leaks, chafing etc.||•||•||•||•|
|Air filter – renew (replace more often if consistently riding in wet or dusty conditions)||•||•||•||•|
|Fuel filter – renew||•||•|
|Spark plugs – renew (NGK LMAR8A-9)||•||•|
|Cooling system – check coolant hoses for chafing/cracks/damage. Replace if necessary.||•||•||•||•|
|Coolant – renew (Zerex Asian Vehicle Coolant)||3 years|
|Clutch lever pivot – lubricate||Year||•||•||•||•|
|Valve clearances – check||•||•|
|Wheel bearings – check for wear/smooth operation||•||•||•|
|Fork oil – renew||•|
|Headstock bearings – check/adjust||•||•|
|Brake fluid – renew (Castrol DOT 4)||2 years|
|Drive chain rubbing strips – check for wear, cracks, or damage||Year||•||•||•||•||•|
|[T] Autoscan – Carry out a full Autoscan using the Triumph Diagnostic Tool||Year||•||•||•||•||•|
|[T] Instruments, chassis ECM (if equipped) and engine ECM – check for latest calibration download using the Triumph diagnostic tool||Year||•||•||•||•||•|
|[T] Carry out all outstanding Service Bulletin and warranty work||Year||•||•||•||•||•|
|[T] Complete the service record book and reset the service indicator||Year||•||•||•||•||•|
About the Triumph Street Twin (2021+)
The 2021 Triumph Street Twin was largely a EURO 5 update to the original Street Twin, but it brought with it a new manual and maintenance schedule for the motorcycle, which is reproduced above.
At its core, the Street Twin is largely the same. It’s still a “street”-focused motorcycle that’s very simple in nature – based on a 900cc parallel twin fuel-injected liquid-cooled motor with a 270-degree crankshaft giving it a nice exhaust note and torque-friendly power delivery. Power is largely unchanged — one horsepower less on the official specs, but details like that are lost in dyno checks and street roll-on tests.
There’s a single dial and a round headlight, keeping things simple.
But the new 2021 Triumph Street Twin hides a few changes under the hood. Triumph says the engine has a lighter crankshaft, balance shafts, and magnesium engine cover, giving the Street Twin a slight weight loss of 4kg over the outgoing models, and a little more of a free-revving nature.
Additionally, there are some really stylish new colour schemes, like the “Gold Line” — an instant classic. Bikes like the Street Twin need to look good as well as go well, and it achieves this with aplomb.
The Street Twin has standard ABS and traction control, as well as two ride modes — rain and road. These adjust both the throttle map and traction control settings.
Aside from that, the Street Twin is as simple as it ever was. The “high-torque” 900cc engine makes 80 Nm (59 ft-lb) peak torque at 3800 rpm, and 64 hp (47 kW) at 7500 rpm. It’s a modestly-powered machine, but on the Street Twin it seems ample.
The front brake caliper is just a single unit, but it’s a Brembo 4-piston caliper. Suspension is mostly non-adjustable, but the rear shocks do have preload adjustability.
In 2021, the Street Twin also came in a stylish EC1 trim.
Manual for the Triumph Street Twin (2021+)
The above maintenance schedule comes directly from the user’s manual for the Triumph Street Twin (2021+), which is available on the Triumph website.