Underground Motorsports
Complete bikes
Pitster Pro X4r
Bike ModelModel: X4R
MSRP: $1999
CHASSIS AND DIMENSIONSColor: White
Curb Weight:
Frame: Chromoly frame with engine cradle
Fuel Capacity: 3 L
Ground Clearance:
Overall Length:
Overall Width:
Seat Height:
Subframe: Chromoly Removable
Swingarm: Alloy Pro Style
Wheelbase:
WHEELS AND TIRESFront Tire: 2.75 x 14"
Front Wheel: 1.40 x 14"
Rear Tire: 3.0 x 12"
Rear Wheel: 1.85 x 12"
HYRAULIC DISC BRAKESFront Brake: 210mm W-Style Rotor W/ Floating Caliper
Rear Brake: 190mm W-Style Rotor W/ Floating
Rear Pedal: Over the peg steel
SUSPENSIONFront: GPX Moto 3 inverted forks w/ adj. compression and rebound
Rear: GPX DNM Piggy Back reservoir w/ adj. compression and rebound
Travel: 8" Front/ 8"Rear
ENGINEBore and Stroke: 60mm x 55mm
Carburetor: 26mm
Clutch: Five plate wet clutch
Compression Ratio: 9.2 to 1
Cooling: Air Cooled
Engine: Four stroke GPX Moto 155cc SOHC air cooled
Gearing: 420/ 16T x 39T
Ignition: Stator/ CDI with lighting coil
Starter: Kick
Transmission: 4 Speed Manual Clutch
Bike ModelModel: X4R
MSRP: $1999
CHASSIS AND DIMENSIONSColor: White
Curb Weight:
Frame: Chromoly frame with engine cradle
Fuel Capacity: 3 L
Ground Clearance:
Overall Length:
Overall Width:
Seat Height:
Subframe: Chromoly Removable
Swingarm: Alloy Pro Style
Wheelbase:
WHEELS AND TIRESFront Tire: 2.75 x 14"
Front Wheel: 1.40 x 14"
Rear Tire: 3.0 x 12"
Rear Wheel: 1.85 x 12"
HYRAULIC DISC BRAKESFront Brake: 210mm W-Style Rotor W/ Floating Caliper
Rear Brake: 190mm W-Style Rotor W/ Floating
Rear Pedal: Over the peg steel
SUSPENSIONFront: GPX Moto 3 inverted forks w/ adj. compression and rebound
Rear: GPX DNM Piggy Back reservoir w/ adj. compression and rebound
Travel: 8" Front/ 8"Rear
ENGINEBore and Stroke: 60mm x 55mm
Carburetor: 26mm
Clutch: Five plate wet clutch
Compression Ratio: 9.2 to 1
Cooling: Air Cooled
Engine: Four stroke GPX Moto 155cc SOHC air cooled
Gearing: 420/ 16T x 39T
Ignition: Stator/ CDI with lighting coil
Starter: Kick
Transmission: 4 Speed Manual Clutch
$1,999.00 Free Shipping
$1,549.00 Free Shipping
Pitster Pro x2 140r
Bike ModelModel: X2 140R
MSRP: $1,549
CHASSIS AND DIMENSIONSColor: White
Curb Weight: 134lbs
Frame: Chromoly frame with engine cradle
Fuel Capacity: 3 L
Ground Clearance: 8"
Overall Length: 61"
Overall Width: 30"
Seat Height: 29'
Subframe: Chromoly Removable
Swingarm: Alloy Pro Style
Wheelbase: 44" Axle to Axle
WHEELS AND TIRESFront Tire: 2.75 x 12"
Front Wheel: 1.40 x 12"
Rear Tire: 3.0 x 10"
Rear Wheel: 1.85 x 10"
HYRAULIC DISC BRAKESFront Brake: 210mm W-Style Rotor W/ Floating Caliper
Rear Brake: 190mm W-Style Rotor W/ Floating Caliper
Rear Pedal: Over the peg steel
SUSPENSION Front: GPX Moto 35mm inverted forks w/ adj. compression and rebound
Rear: GPX DNM Piggy Back reservoir w/ adj. compression and rebound
Travel: 6" Front/ 6"Rear
ENGINEBore and Stroke: 56mm x 57mm
Carburetor: 22mm Mikuni
Clutch: Five plate wet clutch
Compression Ratio: 9.2 to 1
Cooling: Air Cooled W/ Single Oil Cooler
Engine: Four stroke GPX Moto 140cc SOHC air cooled
Gearing: 420/ 16T x 39T
Ignition: Stator/ CDI with lighting coil
Starter: Kick
Transmission: 4 Speed Manuel Clutch
Pitster Pro x2 140r
Bike ModelModel: X2 140R
MSRP: $1,549
CHASSIS AND DIMENSIONSColor: White
Curb Weight: 134lbs
Frame: Chromoly frame with engine cradle
Fuel Capacity: 3 L
Ground Clearance: 8"
Overall Length: 61"
Overall Width: 30"
Seat Height: 29'
Subframe: Chromoly Removable
Swingarm: Alloy Pro Style
Wheelbase: 44" Axle to Axle
WHEELS AND TIRESFront Tire: 2.75 x 12"
Front Wheel: 1.40 x 12"
Rear Tire: 3.0 x 10"
Rear Wheel: 1.85 x 10"
HYRAULIC DISC BRAKESFront Brake: 210mm W-Style Rotor W/ Floating Caliper
Rear Brake: 190mm W-Style Rotor W/ Floating Caliper
Rear Pedal: Over the peg steel
SUSPENSION Front: GPX Moto 35mm inverted forks w/ adj. compression and rebound
Rear: GPX DNM Piggy Back reservoir w/ adj. compression and rebound
Travel: 6" Front/ 6"Rear
ENGINEBore and Stroke: 56mm x 57mm
Carburetor: 22mm Mikuni
Clutch: Five plate wet clutch
Compression Ratio: 9.2 to 1
Cooling: Air Cooled W/ Single Oil Cooler
Engine: Four stroke GPX Moto 140cc SOHC air cooled
Gearing: 420/ 16T x 39T
Ignition: Stator/ CDI with lighting coil
Starter: Kick
Transmission: 4 Speed Manuel Clutch
Pitster Pro x2 90r
Bike ModelModel: X2 90R
MSRP: $1,449
CHASSIS AND DIMENSIONSColor: White
Curb Weight: 134lbs
Frame: Chromoly frame with engine cradle
Fuel Capacity: 3 L
Ground Clearance: 8"
Overall Length: 61"
Overall Width: 30"
Seat Height: 29'
Subframe: Chromoly Removable
Swingarm: Alloy Pro Style
Wheelbase: 44" Axle to Axle
WHEELS AND TIRESFront Tire: 2.75 x 12"
Front Wheel: 1.40 x 12"
Rear Tire: 3.0 x 10"
Rear Wheel: 1.85 x 10"
HYRAULIC DISC BRAKESFront Brake: 210mm W-Style Rotor W/ Floating Caliper
Rear Brake: 190mm W-Style Rotor W/ Floating Caliper
Rear Pedal: Over the peg steel
SUSPENSIONFront: GPX Moto 35mm inverted forks w/ adj. compression and rebound
Rear: GPX DNM Piggy Back reservoir w/ adj. compression and rebound
Travel: 6" Front/ 6"Rear
ENGINEBore and Stroke: 47mm x 49.5mm
Carburetor: 26mm
Clutch: Five plate wet clutch
Compression Ratio: 9.2 to 1
Cooling: Air Cooled
Engine: Four stroke GPX Moto 140cc SOHC air cooled
Gearing: 420/ 16T x 39T
Ignition: Stator/ CDI with lighting coil
Starter: Kick
Transmission: 4 Speed Manuel Clutch
Bike ModelModel: X2 90R
MSRP: $1,449
CHASSIS AND DIMENSIONSColor: White
Curb Weight: 134lbs
Frame: Chromoly frame with engine cradle
Fuel Capacity: 3 L
Ground Clearance: 8"
Overall Length: 61"
Overall Width: 30"
Seat Height: 29'
Subframe: Chromoly Removable
Swingarm: Alloy Pro Style
Wheelbase: 44" Axle to Axle
WHEELS AND TIRESFront Tire: 2.75 x 12"
Front Wheel: 1.40 x 12"
Rear Tire: 3.0 x 10"
Rear Wheel: 1.85 x 10"
HYRAULIC DISC BRAKESFront Brake: 210mm W-Style Rotor W/ Floating Caliper
Rear Brake: 190mm W-Style Rotor W/ Floating Caliper
Rear Pedal: Over the peg steel
SUSPENSIONFront: GPX Moto 35mm inverted forks w/ adj. compression and rebound
Rear: GPX DNM Piggy Back reservoir w/ adj. compression and rebound
Travel: 6" Front/ 6"Rear
ENGINEBore and Stroke: 47mm x 49.5mm
Carburetor: 26mm
Clutch: Five plate wet clutch
Compression Ratio: 9.2 to 1
Cooling: Air Cooled
Engine: Four stroke GPX Moto 140cc SOHC air cooled
Gearing: 420/ 16T x 39T
Ignition: Stator/ CDI with lighting coil
Starter: Kick
Transmission: 4 Speed Manuel Clutch
$1,449.00 Free Shipping