Yamaha RZ 50 - 2005 Specifications and Reviews

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General information

Year2005

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox6-speed
Cooling systemLiquid
Bore x stroke40.0 x 39.7 mm (1.6 x 1.6 inches)
Compression7.5:1
Torque5.90
Power7.20
Stroke2
Engine typeSingle cylinder
Capacity:49.00 ccm (2.99 cubic inches)

Physical measures and capacities

Wheelbase1,215 mm (47.8 inches)
Ground clearance135 mm (5.3 inches)
Overall width615 mm (24.2 inches)
Overall length1,805 mm (71.1 inches)
Overall height970 mm (38.2 inches)
Seat height745 mm (29.3 inches) If adjustable, lowest setting.
Dry weight80.0 kg (176.4 pounds)
 
 

Yamaha RZ 50 dimensions and frame

Rear brakesExpanding brake
Front brakesSingle disc
Rear tyre dimensions80/90-17 44P
Front tyre dimensions70/100-17 40P

Speed and acceleration

Power/weight ratio0.0900 HP/kg
 
 

CategoryNaked bike
ModelYamaha RZ 50

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity10.00 litres (2.64 gallons)

Performance Profile & Rider Fit

7.1 hp
Peak Power

Best For

Track20%
City70%
Cornering55%
Daily Riding35%
Touring10%
Passenger15%

Rider Profile

Best ForThis is an entry-level 50cc two-stroke best suited to beginners, learners, or younger riders taking their first steps on a motorcycle.
PurposeDesigned as a lightweight sport-styled moped for short urban hops and learning basic riding skills rather than any serious performance riding.
Rider FitIts tiny 80kg dry weight and compact dimensions make it extremely easy to handle and manageable for riders of almost any size or strength.
CharacterA sporty-looking but low-powered two-stroke single that rewards revving and light, nimble handling over outright speed.
Not Ideal ForThis is not for experienced riders seeking real performance, highway travel, long-distance touring, or carrying a passenger comfortably.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2005 Yamaha RZ 50 Rider Ergonomics Assessment

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Feet:

At 745mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2005 Yamaha RZ 50, with a moderate knee angle of around 105 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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