{"product_id":"mahle-forged-piston-cylinder-set-87mm-69mm-stroke-1641cc-vw-type-1-air-cooled-98-1987-b","title":"Mahle Forged Piston \u0026 Cylinder Set | VW Type 1 Air-Cooled | 87mm × 69mm 1641cc (98-1987-B)","description":"\u003ch2\u003e\u003cb\u003eMahle Forged Piston \u0026amp; Cylinder Set — 87mm × 69mm Stroke, 1641cc | VW Type 1 Air-Cooled (98-1987-B)\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003eThe 1641cc big-bore is a favorite budget power-adder for the Type 1, and this Mahle forged 87mm × 69mm set (98-1987-B) is the forged-piston version — the upgrade for any 1641 build where heat or detonation would crack a cast slug.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eVehicle Fitment\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eVW Beetle:\u003c\/b\u003e All years, air-cooled Type 1 engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Super Beetle:\u003c\/b\u003e All years, air-cooled Type 1 engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Karmann Ghia:\u003c\/b\u003e All years, air-cooled Type 1 engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Bus (Type 2):\u003c\/b\u003e All years, air-cooled Type 1 engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Type 3 (Squareback, Fastback, Notchback):\u003c\/b\u003e All years, air-cooled Type 1 engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eWhy Choose Mahle?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eMahle forged pistons are forged, not cast, for strength under heat, boost, and nitrous — built for high-output street, race, and off-road use.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eKey Features \u0026amp; Benefits\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDisplacement:\u003c\/b\u003e 87mm bore × 69mm stroke = 1641cc displacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eForged pistons:\u003c\/b\u003e Mahle forged pistons — forged, not cast, for strength under heat, boost, and nitrous\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete set of 4:\u003c\/b\u003e cylinders, forged pistons, rings, wrist pins, and clips\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCrank:\u003c\/b\u003e Runs the stock 69mm crank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBore:\u003c\/b\u003e 87mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStroke:\u003c\/b\u003e 69mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDisplacement:\u003c\/b\u003e 1641cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePiston:\u003c\/b\u003e Mahle forged aluminum alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCylinder:\u003c\/b\u003e Cast iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSold as:\u003c\/b\u003e Complete set of 4 (includes rings, pins, clips)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBrand:\u003c\/b\u003e Mahle\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 98-1987-B\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUPC:\u003c\/b\u003e 707924433876\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDoes this fit my air-cooled VW Type 1?\u003c\/b\u003e Yes — Beetle, Super Beetle, Karmann Ghia, Bus (Type 2), and Type 3, with the case machined for this bore where required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAre these forged or cast pistons?\u003c\/b\u003e Forged — Mahle forged pistons, for high-output street, race, and off-road use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDo I need a stroker crank?\u003c\/b\u003e No — it runs the stock 69mm crank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat's included?\u003c\/b\u003e A complete set for one engine: 4 cylinders, 4 forged pistons, rings, wrist pins, and clips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat's the part number?\u003c\/b\u003e Mahle 98-1987-B (UPC 707924433876).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eInstallation\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSlip-in on a standard case machined for this bore — no special case work required.\u003c\/li\u003e\u003c\/ul\u003e\n\u003chr\u003e\u003ch3\u003e\u003cb\u003eExplore Related Categories\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/collections\/engine-parts\"\u003eEngine Parts\u003c\/a\u003e, \u003ca href=\"\/collections\/all-vw-aircooled\"\u003eAll VW Air-Cooled\u003c\/a\u003e, \u003ca href=\"\/collections\/mahle\"\u003eMahle\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov. All parts legal for use on pre-pollution-controlled vehicles only.\u003c\/p\u003e","brand":"Mahle","offers":[{"title":"Default Title","offer_id":45118627774579,"sku":"98-1987-B","price":1141.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/98-1987-B-scaled.jpg?v=1782495583","url":"https:\/\/www.washburnsmetal.com\/products\/mahle-forged-piston-cylinder-set-87mm-69mm-stroke-1641cc-vw-type-1-air-cooled-98-1987-b","provider":"Washburn's Metal","version":"1.0","type":"link"}