Suzuki Boulevard C90 and C90T (2013+) Maintenance Schedule and Service Intervals

This is the maintenance schedule and associated service intervals for the Suzuki Boulevard C90 and C90T from 2013 onward (though not available in all markets).

The Boulevard C90 is a cruiser motorcycle that Suzuki has made in that name since 2005. It was partly a rebranding of the former VL series of cruisers, but the new Boulevard also has multi-port fuel injection, borrowed from the GSX-R series of racing bikes. The Boulevard C90 has a revolutionary (for the time) 32-bit ECU.

In 2013 the Boulevard C90 was radically re-styled, and re-released as the C90 BOSS and the C90T, the latter of which is the same thing but with bags and a shield. In the process Suzuki made some minor changes, like to the air filter process, and to the tune.

The Boulevard C90/C90T is powered b a 1462 cc V-twin in a 54-degree configuration that it shares with the same generation Suzuki Boulevard M90. It has a chrome-over-black finish on the engine and cases to give it a typical “American-cruiser” flavour.

The engine’s fuel injection system, with dual throttle valve configuration, lets the Suzuki Boulevard C90 make 50 kW (67 hp) at 4800 rpm, and a stomping 114 Nm (84 lb-ft) of torque at a very low 2300 rpm.

Plus, blacked out in the BOSS editions, it looks awesome.

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Suzuki Boulevard C90/C90T Maintenance Schedule

Below is the maintenance schedule for the Suzuki Boulevard C90, same as that for the C90T.

The Boulevard C90/C90T is very easy to maintain, being an exposed V-twin with a shaft drive.

Interval: This interval should be judged by number of months or odometer reading, whichever comes first.


  • I= Inspect and clean, adjust, replace or lubricate as necessary.
  • R= Replace
  • T= Tighten
  • (California model only) and (CA. only) means that the items or the maintenance interval is to be applied only for the California model.
mi x 10000.647.51114.5
km x 100016121824
Engine oil (Motul 5100 10W-40 is popular)RRRRR
Engine oil filter (HF138RC)RR
Air cleaner element (SU-1409)IReplace every 36K km (22K miles)
Spark plugs (NGK DPR7EA-9 — you need 4 as it’s dual spark plug)IRIR
Valve clearanceIII
Radiator hose / systemIIIII
Engine coolant — Suzuki Super Long Life Coolant (Blue) or Motorex M3.0 Coolant
Brakes (including pads)IIIII
Brake hose (cracks, kinks)IIIIReplace every 4 years
Brake fluid level (Castrol DOT 4)IIIIReplace every 2 years
Final gear oil (Mobil 1 Gear Oil)RIIMany owners change every year or 12000 km / 7500 mi.
Exhaust pipe bolts and muffler boltsTTTReplace every 4 years or 48,000 km (29,000 miles)
Fuel hoseIIII
Throttle cable playIIIII
PAIR (air supply) systemII
Throttle valve synchronizationIICA: Sync at break-in
Evaporative emission control systemII
Clutch cable playIIII
Front forksII
Rear suspensionII
Chassis bolts and nutsTTTTT
General lubrication (Lithium soap-based grease)Lubricate every 1,000 km (600 miles)
Suzuki Boulevard C90 maintenance schedule

Tyre size and tyre pressure for the Suzuki Boulevard C90 & C90T

Below are the tyre recommendations for the Suzuki Boulevard C90 and C90T.

TyreSizeTyre pressure (cold)Brand(s) shipped with
Front130/80-17M/C 65H225 kPa (2.25 kgf/cm2, 33 psi)BRIDGESTONE G853 G
Rear200/60-16M/C 79HSolo: 250 kPa (2.50 kgf/cm2, 36 psi)
Dual: 280 kPa (2.80 kgf/cm2, 41 psi)
Tyres and tyre pressures for the Suzuki Boulevard C90

The front tire size is a bit larger than it was in the past — the earlier C90 (up to 2009) was on 130/70-16 tyres.

About the Suzuki Boulevard C90 and C90T (2013+)

2016 Suzuki Boulevard C90 BOSS
2016 Suzuki Boulevard C90 BOSS

The Suzuki Boulevard C90 is a fuel-injected cruiser that Suzuki released to replace the VL1500 in 2005.

In 2013, Suzuki updated the styling significantly — though with very few changes to the actual engine.

Suzuki Boulevard C90 has a 1462 cc 54-degree V-twin. It’s the same basic engine as in the Boulevard M90. You could also call the C90 the little sibling of the Boulevard C109R, the biggest cruiser in the Suzuki Boulevard range, but the Boulevard C90 stands on its own as a “middleweight” cruiser.

Suzuki packed the Boulevard C90’s engine with all sorts of niceties designed to keep it low maintenance and easy to rev. The engine has internals designed to offer high heat transfer and low friction, including chrome-nitride oil-control rings inside cylinders lined with the Suzuki Composite Electrochemical Material (SCEM, an acronym they use often enough to remember). The combination of the rings and SCEM makes for a high reliability engine.

The Suzuki Boulevard C90’s engine has a single overhead cam that operates four valves in each head. It has sound-deadening materials to help cut down on valve-cover drumming and general mechanical noise, which is part of emissions compliance.

The engine breathes through same throttle bodies as the GSX-R, which opens up the opportunity for some more engine gadgetry.

Suzuki’s Dual Throttle Valve system (used on many motorcycles up to high-end sport bikes) has a secondary, computer-controlled butterfly plate that helps smooth out power delivery.

Finally, the Suzuki Boulevard C90’s dual spark plugs help ensure efficient combustion. This helps with mileage and emissions. But remember, when it’s time to replace the spark plugs, there are four, despite being a V-twin.

Since the BOSS editions of the Boulevard C90, the motorcycle has also started to look very striking and modern.

Unlike many other cruisers (but like other Suzuki cruisers), the Suzuki Boulevard C90 has a shaft drive. This helps with low maintenance requirements. In fact, there’s no set service schedule for replacing shaft drive oil (other than at break-in), though many owners on forums say they opt to do it every 2nd oil change or every 1-2 years. Some do it more often.

The Boulevard C90 has just a five-speed transmission, but the fifth speed is a high enough ratio for relaxed highway cruising.

Suzuki is gradually retiring the Boulevard C90 — the model on the current website shows the model from a few years ago, for example.

Manual for the Suzuki Boulevard C90

Suzuki Boulevard C90 maintenance schedule
Suzuki Boulevard C90 maintenance schedule screenshot

The above maintenance schedule comes directly from the user’s manual for the Suzuki Boulevard C90

You can download it from Suzuki’s official website here.

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