The Z3-140 still boasts the exclusive to Stomp SR140C Z40 cam engine. Stomp buy in the YX140 and then fettle the engine with stiffened valve springs & a high lift race cam (known as the Z40 cam). The result is 2hp more than any other YX140 engine on the market.

ENGINE Stomp Racing SR140C Z40 race cam GEARBOX Start-in-gear, all-up 4 speed HORSEPOWER 14hp at rear wheel CARB 26mm race carb with double foam filter CASES Aluminium shot blast finished with Stomp logo COOLER CNC oil with braided steel hoses FRAME SDG2 heavy duty cradle frame for ultimate stiffness and control SUBFRAME Removable rear subframe & bolt on engine hangers SWINGARM Revised light-weight tig welded 430mm FORKS Entended 735mm cnc machined usd oil filled forks CLAMPS Drop forged black anodised triple clamps (yokes) SHOCK Nitrogen filled 290mm piggy back shock with steel bushes WHEELS 14/12 sdg wheels with steel rims for strength TYRES Superb durable and tough innova pattern mx CYLINDERS AND CALIPERS Improved and revised light-weight brake master cylinders and calipers ROTORS Vented light-weight rotors MUFFLER Alloy oval exhaust muffler RACE PIPE Mandrill bent big bore 32mm OD race pipe FEATURES Full length alloy heat shield for style and protection BARS Pro-taper style minibike GRIPS Renthal style soft rubber grips LEVERS Forged alloy clutch & brake levers CHAIN 420 KMC chain with engraved alloy/nylon chain guide REAR SPROCKET 420 41t lightweight durable rear FRONT SPROCKET 420 16t front GEAR SELECTOR Fold back gear selector FOOTPEGS NEW upgraded PRO FUEL TANK NEW reinforced poly resin 5.5 ltr fuel tank with alloy cnc filler cap SEAT NEW revised firmer seat with Stomp logo PLASTICS NEW Detroit hi impact polypropylene plastics BOARD Wrap around crf number board with front brake pipe tidy GRAPHICS New Stomp race kit with Stomp race sponsors logos SEAT HEIGHT 82cm WEIGHT 71kg WEIGHT LIMIT 15 stone