Yamaha CS 50 RR LC Jog (2002–2012): The Zippy Urban Companion That Refuses to Grow Old

Introduction

The Yamaha CS 50 RR LC Jog isn’t just a scooter—it’s a cultural artifact of urban mobility. Produced from 2002 to 2012, this two-stroke warrior carved its niche as a lightweight, no-nonsense commuter for riders who valued practicality with a dash of sporty flair. Whether navigating Tokyo’s neon-lit alleyways or European cobblestone streets, the Jog RR LC became synonymous with agility, simplicity, and a surprisingly thrilling ride for a 50cc machine. Let’s dissect why this scooter remains a cult favorite and how it holds up today.

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Design & Ergonomics: Compact, Sporty, and Surprisingly Practical

At first glance, the Jog RR LC’s design screams “city slicker.” Its compact dimensions—1,740 mm (68.5 inches) in length and a 1,210 mm (47.6-inch) wheelbase—make it a master of tight spaces. The sharp, angular bodywork (especially on the Moto GP edition) gives it a sportier edge compared to rivals like the Honda Dio. The 770 mm (30.3-inch) seat height is accessible even for shorter riders, and the narrow 675 mm (26.6-inch) width allows for effortless lane filtering.

Key design highlights:
- Color options: Varied by year, ranging from bold red and white to stealthy black. Later models added metallic silver.
- Storage: The under-seat compartment fits a full-face helmet—a rarity in 50cc scooters.
- Weight: At 79–85 kg (174–187 lbs), it’s light enough to maneuver by hand in parking lots.

The analog speedometer and basic indicator lights keep the dashboard clutter-free, though don’t expect modern luxuries like fuel gauges. You’ll rely on the 5.5-liter (1.45-gallon) tank’s reserve switch—a charmingly old-school quirk.

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Engine Performance: Two-Stroke Symphony in a Four-Stroke World

The heart of the Jog RR LC is its liquid-cooled, single-cylinder two-stroke engine—a rarity in an era dominated by four-strokes. With displacements locked at 49 cc (2.99 cubic inches), output ranged from 2.8 HP (2.1 kW) in early models to 3.8 HP (2.8 kW) in later iterations, all screaming at 7,000–7,500 RPM. Torque stays consistent at 3.0–3.9 Nm (2.2–2.9 ft.lbs), peaking around 6,500 RPM.

What’s it like to ride?
- Acceleration: The CVT transmission delivers punchy low-end thrust. You’ll hit 30 km/h (18.6 mph) in seconds—perfect for city traffic.
- Top speed: Later models with fuel injection (e.g., 2011 Jog ZR) touch 105 km/h (65.2 mph), though 80–90 km/h (50–56 mph) is more realistic uphill.
- Soundtrack: The two-stroke’s raspy whine is addictive, though louder than modern four-strokes.

Fuel system evolution:
- Carburetor (2002–2010): Simpler to tune but less efficient (28–35 km/l or 66–82 mpg).
- Fuel injection (2011–2012): Better cold starts and mileage (up to 65.8 km/l or 154 mpg in some Asian models).

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Handling & Braking: Nimble, But Don’t Push Too Hard

The Jog’s chassis is a mixed bag. The rigid asymmetric steel frame and 12-inch wheels (110/70 front, 120/70 rear tires) provide stability at speed, but the suspension is basic:
- Front: Telescopic forks with 70 mm (2.8 inches) of travel.
- Rear: Unit swingarm with 60 mm (2.4 inches) travel.

On the road:
- Strengths: Effortless cornering in traffic. The 132 mm (5.2-inch) ground clearance handles curbs comfortably.
- Weaknesses: Rough roads send shocks straight to your spine. Avoid potholes.

Braking:
- Front: A single 110 mm disc (Brembo on ZR models) offers decent bite.
- Rear: Drum brake—adequate for dry conditions but fades in rain.

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Ownership Experience: Where the Jog Shines (and Stumbles)

Daily usability:
- Storage: The helmet compartment is a lifesaver. Add a rear rack for groceries.
- Comfort: The seat’s foam thins out after an hour—consider an aftermarket cushion.
- Reliability: The liquid-cooled engine runs cooler than air-cooled rivals, prolonging lifespan.

Annoyances:
- Vibrations: The two-stroke buzzes through the handlebars at full throttle.
- Smoke: Older carbureted models emit visible exhaust fumes—not ideal for eco-conscious cities.

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Competition: How the Jog Stacks Up

1. Honda Dio (2000–2010):
2. Air-cooled four-stroke, quieter but slower (2.5 HP).

3. Better fuel economy but lacks the Jog’s sporty edge.

4. Aprilia SR 50 (2004–Present):

5. Liquid-cooled two-stroke with 6.5 HP (restricted).

6. Superior suspension and styling but pricier to maintain.

7. Peugeot Speedfight 50 (1997–2016):

8. French rival with similar power.
9. Sportier handling but notorious electrical gremlins.

Verdict: The Jog strikes a balance between performance and practicality. It’s not the fastest or most refined, but its simplicity and tunability make it a favorite for modders.

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Maintenance: Keeping the Two-Stroke Alive

Critical upkeep tips:
1. Oil system: The separate lubrication tank requires JASO FC/ISO EG C/D two-stroke oil. Check levels weekly.
2. Coolant: Replace every two years (900 ml of ethylene glycol mix).
3. Belt drive: Inspect the CVT belt every 5,000 km (3,100 miles). Cracking? Swap it preemptively.
4. Spark plugs: NGK BR8HS (0.6 mm gap) every 6,000 km (3,700 miles).
5. Tires: Maintain 1.75 bar (25 psi) front / 2.0 bar (29 psi) rear.

Common upgrades from MOTOPARTS.store:
- High-performance exhausts (unleash hidden power).
- Upgraded suspension kits (for smoother rides).
- LED lighting (better visibility).

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Final Thoughts: A Legacy of Urban Agility

The Yamaha Jog RR LC isn’t just a relic—it’s proof that simplicity wins. While newer scooters prioritize emissions compliance over excitement, the Jog’s two-stroke heart and featherweight design keep it relevant. For riders craving a raw, connected experience in a world of sanitized commuters, this Yamaha remains a benchmark.

Whether you’re restoring a 2002 model or hot-rodding a 2012 ZR, MOTOPARTS.store has the gear to keep your Jog running—and grinning—for years to come.

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Specifications sheet

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