{"product_id":"red-line-primary-case-oil-1-qt-12-case-sold-ea-57-6522","title":"Red Line Primary Case Oil - 1 QT (12\/Case Sold Ea) — Harley-Davidson Electra Glide Classic, Softail Heritage Classic, Softail Springer (1984-2006)","description":"\u003cp\u003eRed Line primary case oil is a synthetic fluid formulated for V-twin motorcycle primary chaincases with wet-diaphragm spring clutches. Engineered to balance friction for smooth clutch operation and reduced wear across Evolution, Twin Cam, and compatible aftermarket engines from 1984 to present.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFriction-balanced synthetic formulation\u003c\/li\u003e\n  \u003cli\u003eReduces clutch slip and improves power transfer\u003c\/li\u003e\n  \u003cli\u003eLowers operating temperature in the primary case\u003c\/li\u003e\n  \u003cli\u003eCompatible with wet-diaphragm spring clutches\u003c\/li\u003e\n  \u003cli\u003eWorks in Evolution, Twin Cam, and similar V-twin designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Red Line\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 42904\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 083522429047\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 1 quart\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.01 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 4 in W × 4 in L × 8.8 in H\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits 1984-present V-twin American motorcycles including Harley-Davidson Evolution, Twin Cam, and Indian Motorcycle models with wet-diaphragm spring primary clutches.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan I use this in a dry-clutch primary?\u003c\/h3\u003e\n\u003cp\u003eNo — this oil is formulated for wet-diaphragm spring clutches only. Dry-clutch primaries require a different product.\u003c\/p\u003e\n\u003ch3\u003eIs this the same as Red Line MTL gear oil?\u003c\/h3\u003e\n\u003cp\u003eYes — this primary case oil shares the same friction-balanced synthetic base formula as Red Line's famous MTL transmission fluid.\u003c\/p\u003e\n\u003ch3\u003eWill this reduce clutch slip on a modified engine?\u003c\/h3\u003e\n\u003cp\u003eYes. The friction-balanced formula is designed to apply more power and reduce slip compared to standard synthetics, beneficial for modified and high-output engines.\u003c\/p\u003e\n\u003ch3\u003eHow often should I change primary case oil?\u003c\/h3\u003e\n\u003cp\u003eFollow your motorcycle's service manual interval. Most V-twin riders change primary case oil annually or every 20,000 miles.\u003c\/p\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":53035079073903,"sku":"57-6522","price":80000.0,"currency_code":"COP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_1809a4d6-1746-462d-8f83-33bef8bb1858.png?v=1779560476","url":"https:\/\/vtwinbikers.com\/en-co\/products\/red-line-primary-case-oil-1-qt-12-case-sold-ea-57-6522","provider":"Vtwinbikers","version":"1.0","type":"link"}