Honda CBR300R (NC51) — OEM Fluid, Tire Pressure & Maintenance Specs
286cc Liquid-Cooled Single DOHC 4V Long-Stroke · Source: Honda CBR300R (NC51) (2014–2022) Official Owner’s Manual Maintenance Specifications
According to the Honda CBR300R (NC51) (2014–2022) Official Owner’s Manual Maintenance Specifications, the 2014–2022 Honda CBR300R (NC51) (chassis NC51) requires 1.4 L (1.48 US qt) of SAE 10W-30 (JASO MA, API SJ or higher) engine oil for a drain-only change and 1.5 L (1.59 US qt) with filter service (15410-KYJ-902 / HF112). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (110/70-17 M/C 54S) and 200 kPa / 2.00 bar / 29 PSI rear (140/70-17 M/C 66S), paired with 1× NGK SIMR8A9 spark plug(s) and a YTZ8V / YTX7L-BS battery.
Drain only: 1.4 L (1.48 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~393 km (244 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-30 (Alt: SAE 10W-40) · JASO MA · API SJ or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.4 L (1.48 US qt) • With filter/strainer: 1.5 L (1.59 US qt) • Complete dry overhaul: 1.8 L (1.90 US qt) |
| OEM Oil Filter Code & Type | 15410-KYJ-902 / HF112 |
| Correct Oil Level Check Method | Hold bike upright on level ground 3–5 min after warm shutdown; read crankcase sight glass |
| Oil Drain Bolt Torque | 24 N·m (17.7 lb-ft / 2.45 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 110/70-17 M/C 54S · Rear: 140/70-17 M/C 66S (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 200 kPa / 2.00 bar / 29 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| OEM Spark Plug & Quantity | NGK SIMR8A9 × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ8V / YTX7L-BS (12V 7.0Ah MF AGM) |
| Final Drive Maintenance | 520 Sealed O/X-Ring Chain — Maintain 25–35 mm slack and lube every 800–1,000 km |
| Brake Fluid & Coolant | DOT 4 · Silicate-free ethylene-glycol OAT coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 286 cc · 30.9 hp @ 8,500 rpm · 27 N·m (19.9 lb-ft) @ 7,250 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 785 mm (30.9 in) · 164 kg (362 lbs) |
| Fuel Tank & Est. Real-World Range | 13 L (3.4 US gal) · ~30.2 km/L → ~393 km (244 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 12,000 km / 12,000 km • Air Filter / Spark Plug: 18,000 km / 24,000 km • Valve Clearance Check: 24,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Stroked from 55 mm to 63 mm over the CBR250R to reach 286cc, pairing dual Fireblade-style headlights with a heavier balancer shaft and taller highway gearing.
Oil & Clutch Mechanical Engineering Note
Sustained 110+ km/h highway runs heat the compact 1.5 L sump quickly; check the upright sight glass weekly and refresh full-synthetic JASO MA oil every 4,000–5,000 km.
Garage Wrenching Gotchas
- Unplug the front turn-signal connector before pulling the right side fairing for oil filter or coolant access so the sub-harness wires are not strained.
- Maintain 10–20 mm of free play at the clutch lever tip; zero free play rapidly glazes the compact single-cylinder friction plates under wide-open throttle.
5. Frequently Asked Questions (FAQ)
What oil volume, JASO grade, and oil filter code does the Honda CBR300R (NC51) (2014–2022) require?
Because its wet multi-plate clutch shares engine oil with the gearbox, run SAE 10W-30 (JASO MA) at 1.4 L (1.48 US qt) drain-only and 1.5 L (1.59 US qt) with filter (15410-KYJ-902 / HF112).
How do you accurately check the oil level on the CBR300R (NC51), and what are its service intervals?
Hold the motorcycle dead-vertical on level ground 2–3 minutes after warm shutdown and verify the oil sits mid-way between the Upper and Lower marks in the crankcase sight glass—never on the sidestand. Torque the drain plug to 24 N·m with a new crush washer. Factory oil change intervals are every 12,000 km, with valve clearance inspection every 24,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the CBR300R (NC51)?
Fitted with 110/70-17 M/C 54S front and 140/70-17 M/C 66S rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 29 / 29 PSI (200/200 kPa) solo or 29 / 33 PSI loaded. Seat height is 785 mm (30.9 in) at 164 kg wet weight, delivering ~393 km per 13 L tank.