CFMOTO 675NK (2025+) Maintenance Schedule and Service Info
This is the maintenance schedule and associated service intervals for the CFMOTO 675NK. It is based on CFMOTO’s newly developed 675cc inline three-cylinder engine.
The CFMOTO 675NK is part of a platform that includes the following motorcycles:
- CFMOTO 675NK: upright naked bike (unfaired roadster)
- CFMOTO 675 SR-R: faired sportbike variant with identical engine and chassis
The engine is a liquid-cooled, 675cc transverse three-cylinder unit with double overhead cams and four valves per cylinder. In most markets, including the US, it produces 94 hp and 51.6 lb-ft of torque. A Euro5+ compliant version is also available in Europe, detuned slightly to 88.5 hp and 50.2 lb-ft.
This motor was designed in-house by CFMOTO and is not based on any existing platform from other manufacturers. It uses a 72 mm bore and 55.2 mm stroke, giving it a broader midrange compared to more oversquare triples like the Triumph 675 or MV Agusta F3.
The 675 NK shares most of its chassis and components with the 675 SR-R, including the KYB suspension, J.Juan brakes, and 15L fuel tank. Key differences are in bodywork and electronics; the 675 NK uses a flat bar and a minimal front cowl in place of the sportbike fairing. ABS and two-mode traction control are standard.
Maintenance for both models follows the same schedule. There are no generation changes or platform splits to note at this time that would affect the maintenance intervals or requirements.
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CFMOTO 675NK (2025+) Service Intervals
The basic service interval for the CFMOTO 675NK is every 6,000 miles / 10,000 km or every 12 months, whichever comes first. A break-in service is also required at 600 miles / 1,000 km. Major service items include a valve clearance inspection at 24,000 mi / 40,000 km.
The inline three-cylinder layout means the valve cover is wide, but access is straightforward with standard tools. Keep an eye on the chain, and replace the air filter more frequently if riding in dusty conditions.
General Notes on Serviceability for the CFMOTO 675NK
- The 675 NK uses a liquid-cooled, 675cc inline three-cylinder engine with DOHC and four valves per cylinder. It’s a compact but wide layout, so valve access requires tank and airbox removal but no specialty tools.
- Oil changes are straightforward with good access to the filter and drain bolt. Use JASO MA2 10W-50 oil for best results. Check levels often as this engine revs high and runs hot.
- Coolant system is sealed with a pressure cap on the right side and a visible overflow reservoir. Always bleed air from the system after flushing. Use premixed ethylene glycol-based coolant.
- Spark plug access is tight due to the triple-cylinder layout. Coil packs need to be removed for inspection. Stick with NGK plugs as specified.
- The bike uses CST tires as stock. Rear wheel access is easy thanks to a conventional swingarm. Chain adjustment is standard and tool-free at the axle, but check for stretch often.
Maintenance schedule for the CFMOTO 675NK 2025
Below is the maintenance schedule for the CFMOTO 675NK. The schedule is based on the official CFMOTO service manual but has been reorganized here for clarity and ease of reference.
The schedule is divided into four parts:
- First service: Due at 600 miles / 1,000 km.
- Regular maintenance: Every 3,000 miles / 5,000 km.
- Periodic maintenance: Every 6,000 miles / 10,000 km.
- Long-term service intervals: Items that require attention at longer, sporadic intervals.
First Service
The first service / break-In maintenance is usually carried out by the dealer under warranty. It should be completed between 600 miles / 1,000 km.
Note: CFMOTO recommends that items marked [D] should be performed by an authorized dealer.
| First Service Maintenance for CFMOTO 675NK |
|---|
| [D] Replace oil and oil filter |
| Inspect idle and adjust if necessary |
| [D] Inspect coolant and replace if needed |
| Inspect throttle system and adjust if necessary |
| [D] Inspect functions of electrical parts and repair or replace if needed |
| Inspect battery and recharge if necessary |
| Inspect fuses or circuit breakers and replace if necessary |
| Inspect brake discs and replace if worn |
| Inspect brake pads and replace if worn |
| Inspect brake fluid level and top up if necessary |
| [D] Inspect brake hoses for damage and proper sealing |
| [D] Inspect brake lever and check free play |
| Inspect tire condition and replace if necessary |
| Inspect tire pressure and adjust if needed |
| [D] Inspect front and rear shock absorbers for oil leaks |
| Maintain front forks and rear shock according to the service schedule and intended use |
| [D] Inspect coolant and replace if needed |
| [D] Inspect radiator fan function and repair or replace if necessary |
| Inspect coolant hoses for cracks, leaks, or poor sealing |
| [D] Inspect steering bearings |
| [D] Read fault control memory with PDA |
| [D] Lubricate and inspect movable parts |
| [D] Inspect bolts and nuts for proper tightness |
| [D] Inspect cables for damage, kinks, and proper routing. Check cable adjustment and ensure smooth operation |
Regular Maintenance
Do the following checks for the CFMOTO 675NK every 3,000 miles / 5,000 km. When a time interval is listed, follow whichever comes first (the distance or the time).
The following tasks should be performed regularly and every 600 miles / 1,000 km, and should be performed even more frequently if riding in harsh or dusty conditions:
- Inspect chain lubrication immediately after riding in the rain
- Check and adjust chain tension
Note: CFMOTO recommends that items marked [D] should be performed by an authorized dealer.
| Maintenance Task | Time (months) |
|---|---|
| Replace oil and oil filter | 6 |
| Clean coarse oil filter | 6 |
| [D] Inspect clutch and repair or replace if necessary | |
| Inspect and adjust idle as needed | |
| Inspect and adjust throttle as needed | |
| [D] Clean throttle body | |
| [D] Clean air filter elements. Perform this task more frequently if used in harsh conditions | |
| [D] Inspect spark plug and replace if necessary | |
| Inspect battery and recharge if needed | 6 |
| Inspect fuses or circuit breakers and replace if necessary | 6 |
| [D] Inspect suspension system and repair or replace if necessary | |
| [D] Inspect exhaust pipe sealed gasket and joint for leaks. Check gasket for damage and replace if necessary. Always replace sealed gasket after removing muffler. | 6 |
| [D] Inspect cables for damage, bending, and correct setting | 12 |
Periodic / Annual Maintenance Checklist
Perform the following tasks every 6,000 miles / 10,000 km, which for most tasks also correspond to a 12 month interval. When a time interval is listed, follow whichever comes first (the distance or the time).
Note: CFMOTO recommends that items marked [D] should be performed by an authorized dealer.
| Maintenance Task | Time (months) |
|---|---|
| [D] Replace spark plug | |
| [D] Inspect electrical components and repair or replace if necessary | 12 |
| [D] Inspect wiring for damage, bending, and correct routing | 12 |
| Inspect tire condition and replace if worn | 12 |
| Inspect and adjust tire pressure as needed | 12 |
| [D] Inspect wheel bearings and service or replace if necessary | |
| Inspect front and rear braking systems and repair or replace as needed | 12 |
| Inspect brake discs and repair or replace if necessary | 12 |
| Inspect brake pads and repair or replace if necessary. Perform this task more frequently if used in harsh conditions | 12 |
| Inspect brake fluid level and replenish if necessary | 12 |
| [D] Inspect brake hoses for damage and proper sealing | 12 |
| Inspect brake pedal free play | 12 |
| [D] Inspect front and rear shock absorbers for oil leakage | 12 |
| [D] Inspect steering bearings and service as required | 12 |
| Inspect coolant level and replenish if necessary | 12 |
| [D] Inspect radiator fan function and repair or replace if needed | 12 |
| [D] Inspect cooling hoses | 12 |
| Inspect chain, rear sprocket, and engine sprocket for wear and replace if needed. Perform this task more frequently if used in harsh conditions | 12 |
| [D] Inspect chain guard and replace if necessary. Perform this task more frequently if used in harsh conditions | 12 |
| [D] Read fault control memory with PDA | 12 |
| [D] Lubricate and inspect all movable parts | 12 |
| [D] Inspect bolts and nuts for proper tightness | 12 |
| [D] Inspect pipes, ducts, hoses, and sleeves for cracks, sealing, and correct positioning | 12 |
Long-Term Service Intervals
The following tasks are required less frequently, at longer intervals. While they are not part of regular or annual service, they are essential for long-term performance and reliability. Refer to the maintenance schedule table below for the recommended intervals.
Note: CFMOTO recommends that items marked [D] should be performed by an authorized dealer.
| Maintenance Task | mi | km | Time (months) |
|---|---|---|---|
| [D] Replace air filter elements. Perform this task more frequently if used in harsh conditions | 12,000 | 20,000 | 24 |
| Inspect frame and repair or replace if necessary | 18,000 | 30,000 | |
| [D] Replace coolant | 20,000 | 35,000 | 24 |
| [D] Inspect and adjust valve clearance if required | 24,000 | 40,000 | |
| [D] Replace brake fluid | – | – | 24 |
CFMOTO 675NK Tire Sizes and Pressures
The following are tire sizes and tire pressures for the CFMOTO 675NK.
| Wheel/Tire | Rim size | Size | Pressure (cold) Depending on load/passenger/luggage |
|---|---|---|---|
| Front | MT3.5 × 17 | 120/70 ZR17 M/C 58W | 2.3 bar / 33.3 psi |
| Rear | MT5.5 × 17 | 180/55 ZR17 M/C 73W | 2.6 bar / 37.7 psi |
About the 2025 CFMOTO 675NK
The 675 NK marks a big moment for CFMOTO. It’s the company’s first triple and a clean-sheet engine design, not borrowed or rebranded, but built from the ground up. This bike sits right in that sweet middleweight naked zone, going head-to-head with the likes of the Yamaha MT-07, Honda CB750 Hornet, and Triumph Trident 660 but with a third cylinder and a spec sheet that punches well above its price.
At the heart of the 675 NK is a 675cc inline three-cylinder engine, DOHC, liquid-cooled, and fuel-injected by Bosch. It puts out 70 kW (94 hp) at 11,000 rpm and 70 Nm of torque at 8,250 rpm. Compared to the MT-07’s parallel twin (55 kW, 68 Nm), the 675 NK offers more revs, more power, and an unmistakable triple-cylinder character. It pulls strong through the midrange and still loves to scream at the top end.
| Feature | 2025 CFMOTO 675 NK | 2025 Yamaha MT-07 |
|---|---|---|
| Engine layout | Inline triple (675cc) — revvier, smoother top end | Parallel twin (689cc) — torquey, grunty midrange |
| Power | 94 hp @ 11,000 rpm | 72.4 hp @ 8,750 rpm |
| Torque | 70 Nm @ 8,250 rpm | 68 Nm @ 6,500 rpm |
| Throttle | Cable throttle | Ride-by-wire (YCC-T) |
| Display | 5″ curved TFT with smartphone mirroring and TPMS | LCD (no phone connection or TPMS) |
| Front Suspension | Fully adjustable KYB USD forks | Non-adjustable KYB forks |
| Brakes | J.Juan radial calipers, dual 300 mm discs | Dual 298 mm discs, standard calipers |
| Weight (wet) | 189 kg | 183 kg |
| Seat Height | 810 mm (optional 795 mm / 825 mm) | 805 mm |
| Fuel Capacity | 15 L | 14 L (3.7 gal) |
| MSRP (est) | Around $6,999 (not yet confirmed for US) | $8,199 USD |
The frame and chassis are adapted from the 675 SR-R sportbike, but stripped down for roadster duty. That means a steel tube frame with an aluminum swingarm, fully adjustable 41 mm KYB upside-down forks, and a preload- and rebound-adjustable rear shock. The brakes are solid too: twin 300 mm discs up front with four-piston radial calipers from J.Juan, and a 240 mm disc at the rear. ABS is standard.
Rider aids are modest but useful. You get two-mode traction control, standard ABS, and an up-only quickshifter. There’s no ride-by-wire or ride modes, but the throttle response is predictable thanks to a cable setup. A curved 5-inch TFT dash provides all your key info and features smartphone connectivity, Google Maps mirroring, and even a tire pressure monitoring system.
Ergonomics are on the sporty side. The seat comes from the 675 SR-R but the handlebars are wider and higher for upright riding. Footpegs are a little rear-set, giving it a slightly aggressive stance. Seat height is 810 mm, with optional low (795 mm) and tall (825 mm) seats available. With a curb weight of 189 kg and racy steering geometry (23.7-degree rake, 93.2 mm trail), the 675 NK is nimble and flickable.
Maintenance is pretty straightforward. Basic Service intervals are every 6,000 miles / 10,000 km. Valve clearance checks are due at 40,000 km, and while accessing the triple’s valve cover takes a bit more time than a twin, it’s manageable with standard tools. Oil changes, chain adjustments, and air filter replacements are all conventional.
If the MT-07 is the reliable everyman’s twin and the Trident 660 is the polished British option, the 675 NK is the newcomer with real attitude. It’s got the engine layout everyone loves, real suspension adjustability, and a tech package that’s rare at this price. It’s a lot of bike for the money and might just be the start of something big for CFMOTO.
Reference — Screenshots from the Manual for the 2025 CFMOTO 675NK
Below is a selection of screenshots from the maintenance schedule for the CFMOTO 675NK.
