Borile B50 Cross Junior - 2005 Specifications and Reviews

The 2005 Borile B50 Cross Junior is a lightweight enduro bike designed for young riders and beginners learning off-road skills. Its 50cc single-cylinder engine, adjustable Marzocchi suspension, and manual clutch provide manageable power and control in varied terrain. The bike is best known for its nimble handling and low seat height, making it accessible for smaller or inexperienced riders tackling cross-country riding.

2005
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Engine and Transmission Specifications

ClutchExtra light manually adjustable
Cooling systemLiquid
Fuel systemCarburettor. Dell'Orto PHBG 19 BS
Bore x stroke39.0 x 41.7 mm (1.5 x 1.6 inches)
Stroke2
Engine typeSingle cylinder
Capacity:49.80 ccm (3.04 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,080 mm (42.5 inches)
Seat height730 mm (28.7 inches) If adjustable, lowest setting.
Dry weight57.0 kg (125.7 pounds)

Borile B50 Cross Junior dimensions and frame

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre dimensions3.00-12
Front tyre dimensions2.50-15
Rear suspensionTriple adjustment hydraulic Paioli monoshock
Front suspensionAdjustable hydraulic Marzocchi fork
Frame typeSteel-aluminium oval tubes

CategoryEnduro / offroad
Year2005
ModelBorile B50 Cross Junior

Other specs

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

Performance Profile & Rider Fit

Best For

Track15%
City10%
Cornering75%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a youth-oriented minibike best suited to beginner and junior riders learning offroad skills rather than experienced adults.
PurposeIt exists purely for junior motocross and enduro training, letting small riders practice jumps, berms, and rough terrain at safe, low speeds.
Rider FitThe tiny 730mm seat height and 57kg dry weight make it accessible only to lightweight, small-statured riders such as children or very petite adults.
CharacterIt has the playful, nimble character of a scaled-down motocrosser, with quality adjustable suspension components that reward smooth technique over raw speed.
Not Ideal ForIt is not suitable for adult-sized riders, highway use, passengers, or anyone seeking real touring or top-speed performance.

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

Rider Fit Visualizer

2005 Borile B50 Cross Junior Rider Ergonomics Assessment

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Feet:

At 730mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2005 Borile B50 Cross Junior, with a cramped knee angle of around 60 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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