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Engines

At Fun Bikes we stock a collection of engines perfect for mini pit bikes. From a semi-auto 90cc engine to a 4 valve 140cc engine with a brand new high performance cylinder head, we have everything to either repair or update your mini pit bike.

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Pit Bike Engine 140cc DTE140 YX140 Basic

Pit Bike Engine 140cc DTE140 YX140 Basic

Pit Bike Engine 140cc DTE140 YX140 Basic YX Motorsport is considered the best brand pit bike engine. This Gen 3 engine has a lighetened flywheel, improved ignition, a 4-speed race pattern gearbox N-...

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Pit Bike Engine 125cc DTE125 YX125 BasicFUN:BIKES Pit Bike 125cc YX Engine Basic YX Motorsport is considered the best brand pit bike engine. This engine has a 4-speed race pattern gearbox N-1-2-3-4 and features a big valve head. Kick start in neutral gear only. Bore x Stroke is 54mm x 56mm, and the inlet exhaust valve is 23mm x 27mm. Factory official power figures quote 8.8 horsepower. Includes Kick start Gear lever Carb manifold Manifold gaskets Manifold fixings Commonly used by many of the top speedway engine tuners in the British Juniors Speedway Championships. This a superb engine and will fit most pit bikes. Warning: Supplied dry. Add 10w/40 Engine oil before use View Engine Oil PC5C7F22
Pit Bike Engine 125cc DTE125 YX125 Basic
Pit Bike Engine 125cc DTE125 YX125 Basic
Pit Bike Engine 125cc DTE125 YX125 Basic
Pit Bike Engine 125cc DTE125 YX125 Basic
205GBP£205.00OutOfStock
    OUT OF STOCK
    Pit Bike Engine 150cc DTE150 YX150 Full KitFUN:BIKES Pit Bike Engine 150cc DTE150 YX150 Full Kit YX Motorsport is considered the best brand pit bike engine. This Gen 3 HIGH TORQUE engine has a lightened flywheel, improved ignition, a 4-speed race pattern gearbox N-1-2-3-4 and features a big valve head. The engine is kick start in gear. Bore x Stroke is 60mm x 53mm, and the compression ratio is 9.2:1. Factory offical power figures quote 14.5 horsepower. Max torque is 11n.m Includes Kick start Gear lever Carb manifold Manifold gaskets Manifold fixings Carburettor Twin foam air filter Cdi M2R Racing professional oil cooler Kill switch Coil pack YX engines are the number 1 manufacturer of pit bike engines. With this engine package you are buying a superb engine that is suitable for both fun and full competition use. Please note the stator plate fitted is race off road oriented and not suitable for running lighting kits. Warning: Supplied dry. Add 10w/40 Engine oil before use View Oil Just transfer this 150cc monster into your existing bike and away you go! AWESOME!!!!! PC0948FF
    Pit Bike Engine 150cc DTE150 YX150 Full Kit
    Pit Bike Engine 150cc DTE150 YX150 Full Kit
    Pit Bike Engine 150cc DTE150 YX150 Full Kit
    Pit Bike Engine 150cc DTE150 YX150 Full Kit
    390GBP£390.00OutOfStock
      OUT OF STOCK
      Pit Bike Engine 110cc DTE110 / YX110 M2R RacingFUN:BIKES Pit Bike 110cc YX Engine This is supplied with the following Sprocket cover Carburettor manifold Kick start lever Gear lever As with the majority of smaller capacity pit bike engines, it is not kick in gear start. To complete this engine you will need a carburettor, (smaller than 26mm), and an air filter, which we can supply at additonal cost. This is not a low cost budget engine that can be bought for a much cheaper price. It is a higher spec unit with stronger clutch, and better quality internals. It has superior reliablity and performance over it's cheaper rivals. PC80A26B
      Pit Bike Engine 110cc DTE110 / YX110 M2R Racing
      Pit Bike Engine 110cc DTE110 / YX110 M2R Racing
      180GBP£180.00OutOfStock
        OUT OF STOCK
        Pit Bike Engine 140cc DTE140 YX140 BasicFUN:BIKESPit Bike Engine 140cc DTE140 YX140 Basic YX Motorsport is considered the best brand pit bike engine. This Gen 3 engine has a lighetened flywheel, improved ignition, a 4-speed race pattern gearbox N-1-2-3-4 and features a big valve head. The engine is kick start in gear. Bore x Stroke is 56mm x 57mm, and the inlet exhaust valve is 23mm x 27mm. Factory official power figures quote 14 horsepower. Includes Kick start Gear lever Carb manifold Manifold gaskets Manifold fixings This a superb engine and will fit most pit bikes. Warning: Supplied dry. Add 10w/40 Engine oil before use View Oil PCCD053D
        Pit Bike Engine 140cc DTE140 YX140 Basic
        Pit Bike Engine 140cc DTE140 YX140 Basic
        Pit Bike Engine 140cc DTE140 YX140 Basic
        Pit Bike Engine 140cc DTE140 YX140 Basic
        285GBP£285.00InStock
          ADD TO BASKET
          Pit Bike Engine 140cc DTE140 YX140 Full KitFUN:BIKES Pit Bike Engine 140cc DTE140 YX140 Full Kit YX Motorsport is considered the best brand pit bike engine. This Gen 3 engine has a lightened flywheel, improved ignition, a 4-speed race pattern gearbox N-1-2-3-4 and features a big valve head. The engine is kick start in gear. Bore x Stroke is 56mm x 57mm, and the inlet exhaust valve is 23mm x 27mm. Factory official power figures quote 14 horsepower. Includes Kick start Gear lever Carb manifold Manifold gaskets Manifold fixings Carburettor Air Filter Cdi M2R Racing Professional oil cooler Kill switch Coil pack YX engines are the number 1 manufacturer of pit bike engines. With this engine package you are buying a superb engine that is suitable for both fun and full competition use. Please note the stator plate fitted is race off road oriented and not suitable for running lighting kits. Warning: Supplied dry. Add 10w/40 Engine oil before use View Oil PC7CDB68
          Pit Bike Engine 140cc DTE140 YX140 Full Kit
          Pit Bike Engine 140cc DTE140 YX140 Full Kit
          Pit Bike Engine 140cc DTE140 YX140 Full Kit
          Pit Bike Engine 140cc DTE140 YX140 Full Kit
          340GBP£340.00InStock
            ADD TO BASKET
            Pit Bike Engine 160cc DTE160 YX160 Full KitFUN:BIKESPit Bike Engine 160cc DTE160 YX160 Full Kit YX Motorsport is considered the best brand pit bike engine. This Gen 3 HIGH TORQUE engine has a lightened flywheel, improved ignition, a 4-speed race pattern gearbox N-1-2-3-4 and features a big valve head. The engine is kick start in gear. Bore x Stroke is 60mm x 57mm, and the inlet/exhaust valve is 24mm/29mm Factory official power figures quote 17 horsepower. Includes Kick start Gear lever Carb manifold Manifold gaskets Manifold fixings Carburettor Air Filter Cdi M2R Racing professional oil cooler Kill switch Coil pack YX engines are the number 1 manufacturer of pit bike engines. With this engine package you are buying a superb engine that is suitable for both fun and full competition use. Please note the stator plate fitted is race off road oriented and not suitable for running lighting kits. Warning: Supplied dry. Add 10w/40 Engine oil before use View Oil Just transfer this 160cc monster into your existing bike and away you go! AWESOME!! PC6FC078
            Pit Bike Engine 160cc DTE160 YX160 Full Kit
            Pit Bike Engine 160cc DTE160 YX160 Full Kit
            Pit Bike Engine 160cc DTE160 YX160 Full Kit
            Pit Bike Engine 160cc DTE160 YX160 Full Kit
            445GBP£445.00InStock
              ADD TO BASKET
              Pit Bike Engine 90cc DTE88 YX90 BasicFUN:BIKESPit Bike 90cc YX Engine Basic YX Motorsport is considered the best brand pit bike engine. This engine has a 4-speed semi automatic race pattern gearbox N-1-2-3-4. It is a clutchless lever operation and to change gear, the rider closes the throttle and changes gear with their foot, then re-applies the throttle. Alway closing the throttle to change gear. Bore x Stroke is 47mm x 49.5mm, and the inlet exhaust valve is 23mm x 27mm. Factory offical power figures quote 5.1 horsepower. Includes Kick start Gear lever Carb manifold Manifold gaskets Manifold fixings This a superb engine and will fit most pit bikes. Warning: Supplied dry. Add 10w/40 Engine oil before use View Oil PC78F320
              Pit Bike Engine 90cc DTE88 YX90 Basic
              Pit Bike Engine 90cc DTE88 YX90 Basic
              Pit Bike Engine 90cc DTE88 YX90 Basic
              Pit Bike Engine 90cc DTE88 YX90 Basic
              170GBP£170.00InStock
                ADD TO BASKET
                Pit Bike Zongshen 155z High Output EngineFUN:BIKES The new Zongshen 155 Z High Output will drop into just about any frame using CRF 50/70 motor mounts. Not to be confused with the standard 155 Zongshen engine this engine features a new camshaft design, 6-plate clutch, daytona style outer rotor and a close ratio gearbox to make changing gears easy with no lag. The transmission is 4-up manual (N-1-2-3-4) and is kick start in any gear with the clutch pulled in. Key Features: Close-ratio Gearbox 6 Plate clutch with Daytona clutch basket Removable oil filter New camshaft design Daytona style outer rotor Kick in gear start This Package Includes: Outer Rotor Ignition Ignition coil CDI box Front sprocket 16mm Black Kickstart Gear lever Carb manifold Please note the stator plate fitted is race off road oriented and not suitable for running lighting kits. PC9DA8F3
                Pit Bike Zongshen 155z High Output Engine
                Pit Bike Zongshen 155z High Output Engine
                Pit Bike Zongshen 155z High Output Engine
                360GBP£360.00OutOfStock
                  OUT OF STOCK
                  Pit Bike Engine YX 110cc 4 Speed Semi Auto Electric StartFUN:BIKES YX 110 cc Engine Fitted with a 4 speed semi automatic gearbox, (no clutch). This particular engine has an electric starter fitted, and comes complete with a wiring loom from the stator plate to connect to your existing ancillaries. Comes exactly as in the picture. If required a you can fit a standard pit bike gear lever rather than the Honda C90 style one that is included. The best carb for this engine would be between 19 mm and 22 mm. Summary YX Engine Electric Start 4 Speed Semi Auto Gearbox Kick Start Included Gear lever Included Manifold Gaskets Included PC3A3BF1
                  Pit Bike Engine YX 110cc 4 Speed Semi Auto Electric Start
                  Pit Bike Engine YX 110cc 4 Speed Semi Auto Electric Start
                  Pit Bike Engine YX 110cc 4 Speed Semi Auto Electric Start
                  Pit Bike Engine YX 110cc 4 Speed Semi Auto Electric Start
                  180GBP£180.00OutOfStock
                    OUT OF STOCK
                    Pit Bike Electric Start Engine 150cc DTE150 YX150 Full KitFUN:BIKESPit Bike Electric Start Engine 150cc DTE150 YX150 Full Kit YX Motorsport is considered the best brand pit bike engine. This Gen 3 HIGH TORQUE engine has a lightened flywheel, improved ignition, a 4-speed race pattern gearbox N-1-2-3-4 and features a big valve head. The engine is kick start in gear, and ELECTRIC START. Bore x Stroke is 60mm x 53mm, and the compression ratio is 9.2:1. Factory offical power figures quote 14.5 horsepower. Max torque is 11n.m Includes Kick start Gear lever Carb manifold Manifold gaskets Manifold fixings Carburettor Air Filter Cdi M2R Racing professional oil cooler Kill switch Coil pack YX engines are the number 1 manufacturer of pit bike engines. With this engine package you are buying a superb engine that is suitable for both fun and full competition use. Stator plate fitted is road oriented and is suitable for running lighting kits. Warning: Supplied dry. Add 10w/40 Engine oil before use PC582DC9
                    Pit Bike Electric Start Engine 150cc DTE150 YX150 Full Kit
                    Pit Bike Electric Start Engine 150cc DTE150 YX150 Full Kit
                    Pit Bike Electric Start Engine 150cc DTE150 YX150 Full Kit
                    Pit Bike Electric Start Engine 150cc DTE150 YX150 Full Kit
                    455GBP£455.00OutOfStock
                      OUT OF STOCK
                      Pit Bike Engine YX 110cc 4 Speed Semi AutoFUN:BIKES YX 110 cc Engine Fitted with a 4 speed semi automatic gearbox, (no clutch). This particular engine comes complete with a wiring loom from the stator plate to connect to your existing ancillaries. As with most smaller capacity engines it is not kick in gear. The best carb for this engine would be between 19 mm and 22 mm. Summary YX Engine 4 Speed Semi Auto Gearbox Kick Start Included Gear lever Included Manifold Gaskets Included PC0C9752
                      Pit Bike Engine YX 110cc 4 Speed Semi Auto
                      Pit Bike Engine YX 110cc 4 Speed Semi Auto
                      Pit Bike Engine YX 110cc 4 Speed Semi Auto
                      Pit Bike Engine YX 110cc 4 Speed Semi Auto
                      170GBP£170.00OutOfStock
                        OUT OF STOCK
                        M2R KXF125 Pit Bike Basic 125cc Engine FUN:BIKESM2R KXF125 Pit Bike Basic 125cc Engine 4 Speed manual shift. Race pattern gearbox N-1-2-3-4 Bore x Stroke : 54 mm x 56 mm Inlet/Exhaust valve : 23 mm / 27 mm Max power (std) 8.8 hp Big valve head. Powerful robust engine. As with the majority of smaller capacity pit bike engines, it is not kick in gear start. This a good quality engine and will fit all pit bikes. PC2D0D04
                        M2R KXF125 Pit Bike Basic 125cc Engine
                        M2R KXF125 Pit Bike Basic 125cc Engine
                        M2R KXF125 Pit Bike Basic 125cc Engine
                        M2R KXF125 Pit Bike Basic 125cc Engine
                        205GBP£205.00OutOfStock
                          OUT OF STOCK
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