{"product_id":"mcs978100","title":"Jims Powerglide Hydraulic Tappet. Standard .8425\" O.d – 1984–1999 Big Twin; 1986–1990 XL…","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eJims Powerglide™ tappets will give you a superior hydraulic function when compared with OEM style equipment; a billet steel body with hand-honed hydraulic unitcavity and an oil fed axle. To get full power; you must have zero valve lash and eliminate collapsing of the hydraulic unit as is found in the OEM unit; also called ''the shock absorber syndrome''. Failing to keep the valve open the full amount results in power loss. The Jims Powerglide tappets come as close to a solid tappet as possible; but are still able to compensate for heat expansion. They will even work well with solid style camshafts. Weight 149 grams each. Fits as a direct improved replacement for OEM 18523-86A.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003e84-99 Big Twin; 86-90 XL Sportster; 87-90 Buell (NU)\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Jims\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e MOTOR PARTS \u0026gt; TAPPETS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct code:\u003c\/strong\u003e 978100\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Numbers\u003c\/h2\u003e\n\u003cp\u003eMCS Part Number: 978100\u003cbr\u003eManufacturer Part Number: 2456-1\u003c\/p\u003e","brand":"JIMS","offers":[{"title":"Default Title","offer_id":57379193487747,"sku":"MCS978100","price":153.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1329\/4265\/files\/978100k.jpg?v=1785975120","url":"https:\/\/hogparts.co.uk\/products\/mcs978100","provider":"Hogparts UK Ltd","version":"1.0","type":"link"}