Honda CBR125R (JC39 / JC50) — OEM Fluid, Tire Pressure & Maintenance Specs
124.7cc Liquid-Cooled Single SOHC 2V PGM-FI 6-Speed · Source: Honda CBR125R (JC39 / JC50) (2007–2017) Official Owner’s Manual Maintenance Specifications
According to the Honda CBR125R (JC39 / JC50) (2007–2017) Official Owner’s Manual Maintenance Specifications, the 2007–2017 Honda CBR125R (JC39 / JC50) (chassis JC39/JC50) requires 1 L (1.06 US qt) of SAE 10W-30 (JASO MA, API SJ or higher) engine oil for a drain-only change and 1 L (1.06 US qt) with filter service (15421-035-010 (Strainer Screen)). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (100/80-17M/C 52P) and 200 kPa / 2.00 bar / 29 PSI rear (130/70-17M/C 62P), paired with 1× NGK CR8E spark plug(s) and a YTZ8V / YTX7L-BS battery.
Drain only: 1 L (1.06 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~481 km (299 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 L (1.06 US qt) • With filter/strainer: 1 L (1.06 US qt) • Complete dry overhaul: 1.3 L (1.37 US qt) |
| OEM Oil Filter Code & Type | 15421-035-010 (Strainer Screen) |
| Correct Oil Level Check Method | Hold upright on level ground; rest dipstick UNTHREADED on filler neck (do NOT screw in) |
| 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: 100/80-17M/C 52P · Rear: 130/70-17M/C 62P (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 CR8E × 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 | 125 cc · 13.3 hp @ 10,000 rpm · 10.4 N·m (7.7 lb-ft) @ 8,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 795 mm (31.3 in) · 137 kg (302 lbs) |
| Fuel Tank & Est. Real-World Range | 13 L (3.4 US gal) · ~37 km/L → ~481 km (299 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
Evolved from slim fuel-injected JC39 (2007–2010) to full-sized VFR-look bodywork and wider 100/130 tires on JC50 (2011–2017), running a 1.0 L screen-only sump.
Oil & Clutch Mechanical Engineering Note
Honda liquid-cooled DOHC single (CB/CBR/CRF/Rebel 250–300) using internal paper element 15410-KYJ-902 (observe OUT-SIDE mark!) and SAE 10W-30 JASO MA.