{"product_id":"us-rear-brake-master-cylinder-pump-for-110cc-125cc-140cc-atv-dirt-pit-bike","title":"US Rear Brake Master Cylinder Pump For 110cc\/125cc\/140cc ATV Dirt Pit Bike","description":"\u003ch2\u003eRear Brake Master Cylinder Pump for 110cc 125cc 140cc ATV Dirt Pit Bikes\u003c\/h2\u003e\u003cp\u003eThis US rear brake master cylinder pump is a hydraulic replacement unit for 110cc, 125cc, and 140cc ATV and dirt pit bikes, translating rear lever input into fluid pressure that drives the caliper for controlled braking.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis rear brake master cylinder pump is a hydraulic assembly made to replace a worn or failing rear master cylinder on 110cc, 125cc, and 140cc ATV and dirt pit bikes. The rear brake master cylinder pump pressurizes brake fluid so the rear caliper clamps the rotor with steady, predictable force. Riders and shops servicing small-displacement ATV and pit bike rear brakes will find it a practical replacement part.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRear-mounted hydraulic master cylinder configured for 110cc to 140cc brake systems\u003c\/li\u003e\n\u003cli\u003ePiston and seal assembly designed to hold line pressure across repeated lever strokes\u003c\/li\u003e\n\u003cli\u003eReservoir and body shaped to match common ATV and pit bike mounting points\u003c\/li\u003e\n\u003cli\u003ePushrod and lever interface built for smooth, repeatable engagement\u003c\/li\u003e\n\u003cli\u003eExterior finish helps resist corrosion from mud, water, and trail grit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor 110cc ATVs\u003c\/li\u003e\n\u003cli\u003efor 125cc ATVs\u003c\/li\u003e\n\u003cli\u003efor 140cc ATVs\u003c\/li\u003e\n\u003cli\u003efor 110cc dirt pit bikes\u003c\/li\u003e\n\u003cli\u003efor 125cc dirt pit bikes\u003c\/li\u003e\n\u003cli\u003efor 140cc dirt pit bikes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRear brake service on 110cc to 140cc ATVs and pit bikes\u003c\/li\u003e\n\u003cli\u003eTrail riding where steady rear braking is needed\u003c\/li\u003e\n\u003cli\u003eTrack and practice sessions on small-displacement pit bikes\u003c\/li\u003e\n\u003cli\u003eShop inventory for routine hydraulic brake repairs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePosition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHydraulic master cylinder pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplacement Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110cc, 125cc, 140cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eATV, dirt pit bike\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this rear master cylinder bolt straight onto my ATV or pit bike? \u003cstrong\u003eA:\u003c\/strong\u003e Compare the mounting holes, hose fitting, and lever position on your existing rear master cylinder with this unit before ordering. Matching those details confirms the rear brake master cylinder pump suits your 110cc to 140cc machine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What else do I need to install this master cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e Plan on fresh DOT brake fluid and a bleed of the rear system after installation. The part ships dry, so bench bleeding the master cylinder first helps you get a firm lever faster.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":50555552596054,"sku":"ZZ3O00066","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_47911b5f-4664-42c5-ba43-3755202795b2.jpg?v=1790925988","url":"https:\/\/www.solidspare.com\/products\/us-rear-brake-master-cylinder-pump-for-110cc-125cc-140cc-atv-dirt-pit-bike","provider":"Solid Spare","version":"1.0","type":"link"}