{"product_id":"m4s-direct-push-brake-master-cylinder-electric-motorcycle","title":"M4S Direct Push Brake Master Cylinder – E-Motorcycle Upgrade","description":"\n\u003ch2\u003eM4S Direct Push Brake Master Cylinder for Electric Motorcycle Modification\u003c\/h2\u003e\n\u003cp\u003eUpgrade your electric motorcycle's braking performance with the Mingzhe M4S Direct Push Brake Master Cylinder — a precision-engineered, CNC-machined aluminum alloy brake pump built for riders who demand confident, responsive, and linear braking. Compatible with 22mm standard handlebars and universal across the vast majority of electric motorcycles, retro pedal bikes, and race-inspired builds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Key Features\u003c\/h3\u003e\n\n\u003ch4\u003e1. Precision Thrust Calibration for Linear, Responsive Braking\u003c\/h4\u003e\n\u003cp\u003eFeaturing a left pump thrust ratio of 15.87 and right pump thrust ratio of 17.5, the direct push structure delivers force with minimal transmission loss — giving you a delicate, progressive brake feel that is never abrupt. Even a light squeeze produces immediate braking response, effectively shortening stopping distances. Compatible with crab calipers, large abalone calipers, and large radiation calipers for full front and rear brake modification versatility.\u003c\/p\u003e\n\n\u003ch4\u003e2. Full Aluminum Alloy CNC Construction – Lightweight \u0026amp; High Strength\u003c\/h4\u003e\n\u003cp\u003eThe pump body, oil reservoir, and brake lever are all CNC-machined from high-grade aluminum alloy and finished with anodized black coating for superior wear and corrosion resistance. The split-type independent oil reservoir features a thickened metal body that resists high temperatures, preventing leaks or bulging even during bumpy rides or heat exposure. Gold-tone tightening screws add a bold, competition-inspired aesthetic that goes far beyond standard plastic reservoir models.\u003c\/p\u003e\n\n\u003ch4\u003e3. Upgraded Mechanical Power-Off Switch – Waterproof \u0026amp; Durable\u003c\/h4\u003e\n\u003cp\u003eThis pump abandons the traditional electronic power-off system that is vulnerable to water ingress and failure. The new mechanical power-off structure is inherently waterproof and dustproof, maintaining extremely low failure rates even in rainy conditions or water-crossing rides. The power-off cable is fully pre-routed for seamless integration with your vehicle's original circuit — pressing the brake lever triggers the power-off function, balancing safety with long-term durability.\u003c\/p\u003e\n\n\u003ch4\u003e4. Adjustable Grip Distance – Fits All Hand Sizes\u003c\/h4\u003e\n\u003cp\u003eIndependent adjustment screws on the pump body let you freely set the distance between the pull rod and handlebar grip — giving both large and small-handed riders a comfortable, secure feel. The ergonomically curved pull rod design keeps wrist fatigue to a minimum during long rides and maintains a firm grip during aggressive handling.\u003c\/p\u003e\n\n\u003ch3\u003e🔩 Engineering \u0026amp; Quality Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInternal piston seal made of DOT4 brake fluid-resistant rubber — corrosion-resistant and maintains pressure over long-term use\u003c\/li\u003e\n  \u003cli\u003ePrecisely polished oil passages with no burrs or blockages — ensures smooth oil return with no brake lock or drag\u003c\/li\u003e\n  \u003cli\u003eStandard oil nozzle and fixing hole positions for straightforward installation\u003c\/li\u003e\n  \u003cli\u003eComplete pre-wired harness included — suitable for beginner installers\u003c\/li\u003e\n  \u003cli\u003eFits 22mm standard handlebars — universal compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e⚡ Modification Highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEffortless Braking:\u003c\/strong\u003e Less transmission loss than factory side-push pumps — smoother daily commuting and emergency stops\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBold Aesthetics:\u003c\/strong\u003e Black anodized body + gold screws + silver-red oil reservoir — low-key competitive style with strong curb appeal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Standard port positioning and complete wiring — even first-time modifiers can complete setup quickly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🏍️ Ideal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDaily urban commuting\u003c\/li\u003e\n  \u003cli\u003eMountain road riding and cornering\u003c\/li\u003e\n  \u003cli\u003eShort-distance circuit or track use\u003c\/li\u003e\n  \u003cli\u003eRetro electric motorcycle appearance and performance upgrades\u003c\/li\u003e\n  \u003cli\u003eModification enthusiasts seeking improved brake feel and system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCNC Aluminum Alloy (Anodized)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJK26 \/ M4S\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLeft Pump Thrust Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15.87\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRight Pump Thrust Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17.5\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHandlebar Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22mm Standard\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrake Fluid Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDOT4\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower-Off System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMechanical (Waterproof)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnodized Black with Gold Screws\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-50-psi-dial-tire-pressure-gauge-car-motorcycle-bike\"\u003e0–50 PSI Dial Tire Pressure Gauge – Car, Motorcycle \u0026amp; Bike\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-5l-electric-high-pressure-foam-sprayer-portable-car-wash-gun\"\u003e1.5L Electric Foam Sprayer – Portable High-Pressure Car Wash Gun\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-drive-wheel-protector-impact-socket-set-storage-case\"\u003e1\/2\" Drive Wheel Protector Impact Socket Set + Storage Case\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFurther Reading\u003c\/h3\u003e\n\u003cp\u003eFor guidance on safe vehicle modification and road safety standards, visit the National Highway Traffic Safety Administration (NHTSA) or review motorcycle safety resources at CDC Transportation Safety.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Anti-lock_braking_system\" target=\"_blank\" rel=\"noopener\"\u003eAnti-lock braking system\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the M4S Direct Push Brake Master Cylinder compatible with all electric motorcycles?\u003c\/h4\u003e\n\u003cp\u003eA: The M4S brake pump is designed to fit the vast majority of electric motorcycles, retro pedal bikes, and race-inspired builds that use a standard 22mm handlebar. It is compatible with crab calipers, large abalone calipers, and large radiation calipers for both front and rear brake setups.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What brake fluid does the M4S pump use?\u003c\/h4\u003e\n\u003cp\u003eA: The internal piston seals are made from DOT4 brake fluid-resistant rubber, so this pump is designed for use with DOT4 brake fluid. This material is corrosion-resistant and maintains consistent pressure performance over extended use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does the mechanical power-off switch work?\u003c\/h4\u003e\n\u003cp\u003eA: The mechanical power-off switch activates automatically when you press the brake lever, cutting power to the motor. Unlike traditional electronic power-off systems that can fail due to water ingress, this mechanical design is waterproof and dustproof, offering reliable operation in rain or wet-road conditions.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can beginners install this brake pump themselves?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The M4S uses standard oil nozzle positions and fixing hole layouts, and the complete pre-wired harness is included in the package. Installation is straightforward enough that even first-time modifiers can complete setup and basic debugging without professional tools.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I adjust the grip distance for my hand size?\u003c\/h4\u003e\n\u003cp\u003eA: The pump body features independent adjustment screws that allow you to fine-tune the distance between the pull rod and the handlebar grip. Simply turn the adjustment screw to move the lever closer or farther from the grip until it feels comfortable for your hand size.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the M4S Direct Push Brake Master Cylinder compatible with all electric motorcycles?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The M4S brake pump is designed to fit the vast majority of electric motorcycles, retro pedal bikes, and race-inspired builds that use a standard 22mm handlebar. 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