2009 CH Racing CH 509 Pro Senior Technical Analysis & Specification Breakdown
Positioned in CH Racing's minibike, cross motorcycle lineup, the 2009 CH Racing CH 509 Pro Senior features a 49.7 cc (3 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 12 HP (8.8 kW), transferring power to the rear wheel through chain final drive.
On the scales, the CH 509 Pro Senior measures 35 kg (77 lbs) dry. Rider ergonomics and chassis geometry center around a 678 mm (26.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,024 mm (40.3 in) wheelbase engineered for quick, flickable steering geometry. The 2.8-liter (0.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's CH Racing archive, this model family spans 2 indexed model years from 2009 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
678 mm (26.7 in)
Engine
Displacement49.7 ccm (3.03 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power12.0 HP (8.8 kW))
Fuel SystemCarburettor. DELL´ORTO PHBG 19 BS
CoolingAir
Transmission
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic hydraulic fork
Rear SuspensionSingle shock absorber
Wheelbase1024 mm (40.3 inches)
Ground Clearance250 mm (9.8 inches)
Wheels & Brakes
Front Tyre2.50-12
Rear Tyre2.50-10
Front BrakesSingle disc
Front Brake Ø175 mm (6.9 inches)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight35.0 kg (77.2 pounds)
Power/Weight0.3429 HP/kg
Seat Height678 mm (26.7 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
