{"product_id":"lewis-eb-axial-cylinder-4-pistons-hydraulic-disc-brake-axial-cyclinder-titanium-piston","title":"Lewis EB Pistons Hydraulic Disc Brake | Big Master Pump Axial Cylinder For Lewis Brakes LHT Surron Light Bee \u0026 EMoto Aftermarket DH","description":"\u003ch2 data-start=\"171\" data-end=\"216\"\u003e\u003cstrong data-start=\"174\" data-end=\"214\"\u003eLewis EB (20mm-21mm) Axial 4-Piston Brakes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"217\" data-end=\"269\"\u003e\u003cstrong data-start=\"217\" data-end=\"269\"\u003eOversized Master Cylinder. More Oil, More Power.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"271\" data-end=\"606\"\u003eBuilt for riders who need more from their brakes—more pressure, more consistency, more stopping control. The Lewis EB features an \u003cstrong data-start=\"407\" data-end=\"442\"\u003eoversized axial master cylinder\u003c\/strong\u003e, specifically engineered to push a higher oil volume per stroke. The result: faster piston actuation, firmer lever feel, and greater braking force with less input.\u003c\/p\u003e\n\u003cp data-start=\"608\" data-end=\"819\"\u003ePerfectly matched with a \u003cstrong data-start=\"633\" data-end=\"676\"\u003elarge-volume monoblock 4-piston caliper\u003c\/strong\u003e (2x20mm, 2x21mm), this system delivers superior hydraulic efficiency, ideal for modern E-MTBs, enduro bikes, and gravity-focused trail setups.\u003c\/p\u003e\n\u003chr data-start=\"821\" data-end=\"824\"\u003e\n\u003ch3 data-start=\"826\" data-end=\"846\"\u003e\u003cstrong data-start=\"830\" data-end=\"846\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"847\" data-end=\"1393\"\u003e\n\u003cli data-start=\"847\" data-end=\"985\"\u003e\n\u003cp data-start=\"849\" data-end=\"985\"\u003e\u003cstrong data-start=\"849\" data-end=\"881\"\u003eHigh-Volume Master Cylinder:\u003c\/strong\u003e\u003cbr data-start=\"881\" data-end=\"884\"\u003eIncreased fluid displacement per pull, ensuring rapid piston response and stronger braking force.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"986\" data-end=\"1096\"\u003e\n\u003cp data-start=\"988\" data-end=\"1096\"\u003e\u003cstrong data-start=\"988\" data-end=\"1025\"\u003e4-Piston Caliper (2x20 \/ 2x21mm):\u003c\/strong\u003e\u003cbr data-start=\"1025\" data-end=\"1028\"\u003eAsymmetrical layout for balanced pressure and linear brake feel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1097\" data-end=\"1175\"\u003e\n\u003cp data-start=\"1099\" data-end=\"1175\"\u003e\u003cstrong data-start=\"1099\" data-end=\"1122\"\u003eMineral Oil System:\u003c\/strong\u003e\u003cbr data-start=\"1122\" data-end=\"1125\"\u003eStable, low-maintenance hydraulic performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1176\" data-end=\"1269\"\u003e\n\u003cp data-start=\"1178\" data-end=\"1269\"\u003e\u003cstrong data-start=\"1178\" data-end=\"1212\"\u003e7075-T6 Aluminum Construction:\u003c\/strong\u003e\u003cbr data-start=\"1212\" data-end=\"1215\"\u003eCNC-machined for optimal strength-to-weight ratio.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1270\" data-end=\"1300\"\u003e\n\u003cp data-start=\"1272\" data-end=\"1300\"\u003e\u003cstrong data-start=\"1272\" data-end=\"1298\"\u003eMetallic Pads Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1301\" data-end=\"1393\"\u003e\n\u003cp data-start=\"1303\" data-end=\"1393\"\u003e\u003cstrong data-start=\"1303\" data-end=\"1327\"\u003eLever Adjustability:\u003c\/strong\u003e\u003cbr data-start=\"1327\" data-end=\"1330\"\u003eBearing pivot for smoother modulation and customizable reach.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1395\" data-end=\"1398\"\u003e\n\u003ch3 data-start=\"1400\" data-end=\"1438\"\u003e\u003cstrong data-start=\"1404\" data-end=\"1438\"\u003eWeight (excluding hose \u0026amp; pads)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1439\" data-end=\"1513\"\u003e\n\u003cli data-start=\"1439\" data-end=\"1464\"\u003e\n\u003cp data-start=\"1441\" data-end=\"1464\"\u003e\u003cstrong data-start=\"1441\" data-end=\"1457\"\u003eBrake Lever:\u003c\/strong\u003e 132g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1465\" data-end=\"1486\"\u003e\n\u003cp data-start=\"1467\" data-end=\"1486\"\u003e\u003cstrong data-start=\"1467\" data-end=\"1479\"\u003eCaliper:\u003c\/strong\u003e 202g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1487\" data-end=\"1513\"\u003e\n\u003cp data-start=\"1489\" data-end=\"1513\"\u003e\u003cstrong data-start=\"1489\" data-end=\"1508\"\u003eFront+Rear Set:\u003c\/strong\u003e 440g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1515\" data-end=\"1518\"\u003e\n\u003ch3 data-start=\"1520\" data-end=\"1544\"\u003e\u003cstrong data-start=\"1524\" data-end=\"1542\"\u003eWhy It Matters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1545\" data-end=\"1889\"\u003eStandard brake levers can struggle to move sufficient fluid volume when paired with oversized calipers or long brake lines. The EB 20-21's master cylinder is specifically upsized to overcome this—\u003cstrong data-start=\"1741\" data-end=\"1765\"\u003ereducing dead stroke\u003c\/strong\u003e, \u003cstrong data-start=\"1767\" data-end=\"1791\"\u003eimproving bite speed\u003c\/strong\u003e, and \u003cstrong data-start=\"1797\" data-end=\"1833\"\u003edelivering consistent lever feel\u003c\/strong\u003e, even under sustained descents or high system pressure.\u003c\/p\u003e\n\u003chr data-start=\"1891\" data-end=\"1894\"\u003e\n\u003cp data-start=\"1896\" data-end=\"2050\"\u003e\u003cstrong data-start=\"1896\" data-end=\"1975\"\u003eMade for modern riders. Tuned for power. Built in CNC-cut 7075-T6 aluminum.\u003c\/strong\u003e\u003cbr data-start=\"1975\" data-end=\"1978\"\u003eThe Lewis EB 20-21 is the benchmark for trail and E-MTB braking control.\u003c\/p\u003e","brand":"Lewis","offers":[{"title":"Black \/ Front Left | Rear Right","offer_id":47104293241050,"sku":null,"price":289.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Front Right | Rear Left","offer_id":47104293306586,"sku":null,"price":289.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/3175\/5683\/files\/lewis-eb-pistons-hydraulic-disc-brake-big-master-pump-axial-cylinder-for-brakes-lht-surron-light-bee-emoto-aftermarket-dh-355.webp?v=1776871986","url":"https:\/\/lithiumpowersports.com\/products\/lewis-eb-axial-cylinder-4-pistons-hydraulic-disc-brake-axial-cyclinder-titanium-piston","provider":"Lithium Powersports","version":"1.0","type":"link"}