PRC (pro Racing Cycles) LX-RR Works - 2006 Specifications and Reviews

The 2006 PRC LX-RR Works is a lightweight 50cc motocross bike designed for young riders and beginners entering competitive racing. Its high-revving single-cylinder engine delivers 13.5 horsepower with a 13.5:1 compression ratio, making it responsive and agile on closed courses. Best known for its purpose-built racing geometry and reliable kick-start reliability, it excels in youth motocross championships.

2006
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Engine and Transmission Specifications

ClutchThree Disk PRC Racing clutch
Transmission typefinal driveChain
GearboxAutomatic
Cooling systemLiquid
StarterKick
IgnitionProgressive CDI
Fuel controlPort control
Fuel systemCarburettor. PRC 19MM
Bore x stroke41.0 x 40.0 mm (1.6 x 1.6 inches)
Compression13.5:1
Max RPM14800
Torque8.20
Power13.50
Stroke2
Engine typeSingle cylinder
Capacity:50.00 ccm (3.05 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,016 mm (40.0 inches)
Ground clearance279 mm (11.0 inches)
Overall width787 mm (31.0 inches)
Overall length1,346 mm (53.0 inches)
Overall height914 mm (36.0 inches)
Seat height660 mm (26.0 inches) If adjustable, lowest setting.
Dry weight36.0 kg (79.4 pounds)
 
 

PRC (pro Racing Cycles) LX-RR Works dimensions and frame

Rear brakes diameter140 mm (5.5 inches)
Rear brakesSingle disc
Front brakes diameter160 mm (6.3 inches)
Front brakesSingle disc
Rear tyre dimensions3.0-10
Front tyre dimensions100/90-12
Rear suspension travel269 mm (10.6 inches)
Rear suspensionOlins 36DPW
Front suspension travel211 mm (8.3 inches)
Front suspensionMarzocchi 35mm Inverted Shiver Forks
Trail125 mm (4.9 inches)
Rake (fork angle)26.0°
Frame typeAluminum Perimeter (first mini perimetrer kid aluminum frame in the world

Speed and acceleration

Power/weight ratio0.3750 HP/kg
Top speed80.5 km/h (50.0 mph)

CategoryCross / motocross
Year2006
ModelPRC (Pro Racing Cycles) LX-RR Works

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

13.5 hp
Peak Power
50 mph
Top Speed

Best For

Track70%
City5%
Cornering80%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a youth/junior motocross machine, built for developing young riders rather than adults, so experience requirements are about race-craft fundamentals rather than raw bike control.
PurposeDesigned purely for competitive youth motocross racing on small-scale tracks, not for transportation or leisure riding of any kind.
Rider FitIts tiny 660mm seat height, 36kg dry weight, and compact dimensions mean it is sized specifically for a small, lightweight young rider, not an adult.
CharacterA high-strung, high-RPM 50cc two-stroke race tool with premium suspension components (Marzocchi and Olins) that punches well above its class in handling precision despite minimal top speed.
Not Ideal ForThis bike is not suitable for adult riders, road use, touring, commuting, or carrying a passenger under any circumstance.

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

Rider Fit Visualizer

2006 PRC (Pro Racing Cycles) PRC (pro Racing Cycles) LX-RR Works Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 660mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2006 PRC (Pro Racing Cycles) PRC (pro Racing Cycles) LX-RR Works, with a cramped knee angle of around 55 degrees and an upright 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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