{"product_id":"4-piston-aluminum-disc-brake-caliper-electric-motorcycle-track","title":"4-Piston Aluminum Disc Brake Caliper – Motorcycle Track Edition","description":"\n\u003ch2\u003eTrack-Grade 4-Piston Disc Brake Caliper for Electric Motorcycles \u0026amp; Bikes\u003c\/h2\u003e\n\u003cp\u003eUpgrade your ride with the Ruizuma M616 Large Radiation 4-Piston Hydraulic Disc Brake Caliper — engineered for riders who demand race-level braking precision, outstanding durability, and a bold motorsport aesthetic. Whether you're pushing hard on the track or fine-tuning your electric motorcycle build, this caliper delivers linear, controlled stopping power every time. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003e🔥 Track-Level Braking Performance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpposed 4-Piston Design:\u003c\/strong\u003e The classic large-radiation opposed four-piston layout distributes clamping force evenly across the rotor, minimizing uneven pad wear and delivering fast, linear braking response. Light squeeze gives confident feel; heavy braking stays composed and controlled — no unwanted lock-up.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Sintered\/Ceramic Brake Pads:\u003c\/strong\u003e Paired with high-friction sintered or ceramic brake pads, this caliper maintains stable bite force through continuous downhill runs and multi-lap track sessions — no fade, no soft feel, just rock-solid stopping every time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e💪 CNC 6061-T6 Aluminum Alloy Construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% CNC Integrated Machining:\u003c\/strong\u003e Crafted from 6061-T6 aerospace-grade aluminum alloy with CNC one-piece precision machining for superior overall rigidity, impact resistance, and long-term high-load braking without deformation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnodized Surface Finish:\u003c\/strong\u003e Matte black hard anodizing delivers exceptional wear and corrosion resistance — fingerprint-resistant and long-lasting, staying looking sharp ride after ride.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRed RZMA Laser Logo:\u003c\/strong\u003e Industrial track aesthetics with tough, clean lines and a hardcore racetrack presence that complements virtually any motorcycle modification style.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e⚙️ Precision Return \u0026amp; Smooth Feel\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilt-in oversized return spring and anti-eccentric-wear guide pins ensure the pistons reset rapidly after brake release, reducing unnecessary pad drag, extending the service life of both pads and disc, and keeping your ride smooth and efficient.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔩 Quality Hardware Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless steel rust-proof mounting screws + copper seals for long-term, leak-free operation.\u003c\/li\u003e\n  \u003cli\u003eStandard oil port interface — compatible with mainstream brake pumps and brake lines on the market, no additional adapters required.\u003c\/li\u003e\n  \u003cli\u003eComplete accessory kit included: installation screws, washers, guide pins — ready to install straight out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🛠️ Wide Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100mm Standard Hole Spacing\u003c\/strong\u003e — supports both left and right installation, precise hole positioning, no complex modifications needed.\u003c\/li\u003e\n  \u003cli\u003eCompatible with \u003cstrong\u003e220mm and 260mm rotors\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eFits the vast majority of electric motorcycles and standard motorcycles — ideal for modification builds and performance upgrades.\u003c\/li\u003e\n  \u003cli\u003eModel: JK26 | Material: 6061-T6 Aluminum Alloy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🏆 Rigorous Quality Testing\u003c\/h3\u003e\n\u003cp\u003eEvery caliper passes high-pressure sealing tests, durability braking tests, and high\/low temperature performance tests before leaving the factory — ensuring zero oil leakage, stable pressure retention, and dependable performance over the long term.\u003c\/p\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\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on motorcycle braking system safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What disc rotor sizes are compatible with this 4-piston brake caliper?\u003c\/h4\u003e\n\u003cp\u003eA: The Ruizuma M616 large radiation 4-piston brake caliper is compatible with 220mm and 260mm disc rotors, making it suitable for a wide range of electric motorcycles and standard motorcycle modification builds.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this caliper require special tools or adapters to install?\u003c\/h4\u003e\n\u003cp\u003eA: No special adapters are required. The caliper uses a 100mm standard hole spacing and comes with a complete set of accessories including installation screws, washers, and guide pins, so it can be mounted directly onto most electric motorcycles and motorcycles without complex modifications.\u003c\/p\u003e\n\u003ch4\u003eQ: What material is the M616 brake caliper made from, and how is it finished?\u003c\/h4\u003e\n\u003cp\u003eA: It is CNC precision-machined from 6061-T6 aluminum alloy for maximum rigidity and impact resistance. The surface receives a matte black hard anodizing treatment for superior wear and corrosion resistance, keeping it looking sharp with minimal maintenance.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this caliper suitable for track use, or only street riding?\u003c\/h4\u003e\n\u003cp\u003eA: The M616 is engineered to track-level standards, featuring high-temperature sintered\/ceramic compatible brake pads and a 4-piston opposed piston design that maintains consistent, stable braking force through extended high-performance sessions — equally at home on the street or circuit.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What disc rotor sizes are compatible with this 4-piston brake caliper?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Ruizuma M616 large radiation 4-piston brake caliper is compatible with 220mm and 260mm disc rotors, making it suitable for a wide range of electric motorcycles and standard motorcycle modification builds.\"}}, {\"@type\": \"Question\", \"name\": \"Does this caliper require special tools or adapters to install?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No special adapters are required. 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