
MXR 140 – SEMI AUTO
$1,999.99
MXR 140 SEMI AUTO E-START MIDSIZE PLUS (34 INCH SEAT HEIGHT)
Inducing the MXR 140 Semi Auto E-start & Kick Start 14×17! If you are looking for a mid size play bike that riders of every skill level with love, the MXR 140 is the perfect fit! Featuring a smooth and easy to operate semi auto 4 speed transmission, long travel suspension, 14×17 track and trail friendly wheels. No other bike on the market will build confidence and skill like the MXR 140. Additional features include, performance exhaust system, airbox, ultraflex plastics.
- GPX Moto 140cc power plant
- Semi Auto 4 Speed
- E-start & Kick Start
- 22mm Carburetor
- HD Suspension
- Optional headlight available
- New floating caliper rear brake
- Oversized Rotors
- 1/4 Turn Throttle
20 in stock

MODEL | |
PITSTER PRO | MXR 140 14/17 |
MSRP | $1,999.99 |
ENGINE | |
Carburetor | 22 mm |
Clutch | Semi Auto 4 Speed |
Cooling | Air Cooled |
Gearing | 420/ 16T X 39T |
Lubrication | Oil bath |
Engine | Four stroke ZS 140cc SOHC |
Bore and Stroke | 56mm x 57mm |
Ignition | Stator/ CDI with lighting coil |
Compression Ratio | 9.5:1 |
Starter | Kick |
Transmission | Four speed HO Semi Auto clutch |
CHASSIS AND DIMENSIONS | |
Color | White |
Frame | Chromoly with cradle |
Fuel Capacity | 3.8 L |
Overall Length | 61" |
Overall Width | 27.5" |
Subframe | Chromoly, removable |
Wheelbase | 44.5" |
Seat Height | 34.5" |
Curb weight | 148.5 lbs |
Ground Clearance | 8.5" |
SUSPENSION | |
Front | GPX Hydraulic telescopic oil fork |
Rear | Chromoly, single shock w/ adjustable preload |
Swingarm | Pro style |
Travel | 5 Inches Front / 5 Inches Rear |
WHEELS AND TIRES | |
Front Tire | 2.50 X 17 (60-100/17) |
Front Wheel | 1.40 x 17" |
Rear Tire | 3.00 x 14 (80-100/14) |
Rear Wheel | 1.85 x 14" |
BRAKES | |
Front Brake | 190mm W-Style Rotor W/ Floating Caliper |
Rear Brake | 190mm W-Style Rotor W/ Floating Caliper |
ADDITIONAL FEATURES | |
3m graphics package | Standard |
Head Light & Tail Light | Included |
Kick Stand | Standard (removable) |
Pro style handle bar pad | Standard |
Replica graphics | Available |
Skid plate and Frame Guards | Standard (removable) |
Triple Clamps | Alloy |
BUILD-A-BIKE OPTIONS | |
Air filter and Intake | K&N or UNI Pod Filter |
Clutch and Brake Levers | ASV Lever Sets |
Custom Graphics | |
Big Bore Kits | Big Bore Kit Options |
FEATURES NOT FOUND ON OUR COMPETITION | |
Carburetion jetting kit | Standard |
Engine Skid Plate | Standard |
Gripper seat cover | Standard |
High Flow Air Filter | Standard |
Integrated air box | Standard |
Nylon chain sliders and chain guide | Standard |
Oversized SPX Stainless Steel Footpegs | Standard |
Stainless Steel Fasteners | Standard |
Taper steering bearings w/ dust covers | Standard |
Ultra flex plastics | Standard |
Additional Information
Weight | 148.5 lbs |
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3 reviews for MXR 140 – SEMI AUTO
MXR 140 SEMI AUTOMATIC MANUALS & PARTS DIAGRAMS
Download the parts lists and manuals available for the MXR 140 semi automatic. Subscribe in 2 seconds to our mailing list and get instant access. We promise not to spam you.NOTE FOR CUSTOMERS: All product-related downloads will be available immediately on the order confirmation page, and will be available in your GPXMoto.com account indefinitely. They will also be emailed immediately after purchase as a .zip file.
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TYPE | FILE NAME |
![]() | MXR 140 Diagram |
Download the above documents by clicking the file names.
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Dustin –
“I HAVE A PITSTER PRO 140. ITS MANUAL CLUTCH . JUST GOT IT AND LOVE IT!”
Dustin –
“I HAVE A PITSTER PRO 140. ITS MANUAL CLUTCH . JUST GOT IT AND LOVE IT!”
Dustin –
“I HAVE A PITSTER PRO 140. ITS MANUAL CLUTCH . JUST GOT IT AND LOVE IT!”