Speedo Seats & Luggage- racks Frame Chassis Suspension Forktubes Wheels Brake Fenders Gastanks Motorparts Gaskets Intake Transmission & Driveline Exhaust Electrical & Lights Handlebars, Cables & Mirrors Oil tanks Oil & Chemicals Fasteners Windshields Forward controls, Footpegs Miscellaneous MOTOR PARTS - TOP END 10 708 NEW PRODUCTS ADDED WEEKLY AT / MOTORCYCLESTOREHOUSE.COM 84-04 B.T.; 86-03 XL 524504 48-65 PANHEAD 66-84 SHOVEL 524585 524476 KPMI valve spring kits 36-47 KNUCKLE 524452 57-83 XL 524592 978581 Lightweight racing valve spring kit. Chrome silicone spring set with steel top collars and steel lower collars. .600" valve lift Installed spring pressure 163 lbs. Incl. valve keys. 524504 With steel top collars .655" valve lift (High Pressure) Installed height 1.860", installed spring pressure 185 lbs, open pressure 465 lbs @ .655" valve lift. With internal damper spring to reduce harmonics. 524513 With steel top collars All valve spring sets come with chrome silicone springs, steel lower steel top collars. Racing kits have an installed spring pressure of 154 lbs. and can be used from stock up to .600" valve lift. Works with stock rocker covers without clearance problems. Stock replacement valve spring kits are okay up to .415" valve lift and have 129 lbs seat pressure. 48-65 Panhead 524583 Racing. Steel top collars 524585 Stock. Steel top collars Valve spring kits with a chrome silicone spring set, steel or aluminum collars and steel valve keys. Racing kits have an installed spring pressure 155-165 lbs and are recommended for up to .600" valve lift. Stock valve spring kits have 125-136 lbs. pressure and will take .415" valve lift. 66-E79 Shovelhead With .565" diameter valve guides. 524595 Racing. Steel top collars 524593 Stock. Steel top collars L79-84 Shovelhead With .625" diameter valve guides. 524476 Racing. Aluminum top collars 951564 Stock. Steel top collars Knucklehead racing and OEM replacement valve spring kits. With chrome silicone springs, steel top collars, valve keys and valve spring shims. Specifications for 524452 are: max valve lift: .480”. Installed height: 1.310". Seat pressure 158 lbs. Open pressure: 340 lbs. @ .480” valve lift. The 524459 is a stock replacement kit and used in stock rebuilds from stock .348" up to .415" valve lift applications. Specifications for 524459 are: max valve lift: .415”. Installed height: 1.375". Seat pressure 127 lbs. Open pressure: 270 lbs. @ .415” valve lift. Note 1: 524459 is stock replacement and can be used on stock Knuckleheads without modifications. Note 2: 524452 spring kit must be used with KPMI valve guides. Stock valve guides must be shortened, instructions included. 36-47 Knucklehead 524459 Stock replacement .415" lift (note 1) 524452 Racing. .480" lift (note 2) Great for OEM rebuilds with stock specifications. The springs are manufactured from the highest quality clean chrome silicone wire, shot peened and heat treated for maximum fatigue life. Kit includes springs, upper collars, lower collars, and valve keys. Max valve lift: .400”. Installed height: 1.245". Seat pressure 95 lbs. Open pressure: 330 lbs. @ .400” valve lift. .480" valve lift 524592 Stock. Steel top collars JIMS 84-17 VALVE SPRING KITS JIMS 84-04 style performance valve springs come with an interference double spring design with damper that keeps the inner and outer springs from locking and reduces harmonic vibrations. The 04-17 style Beehive springs are, like stock, onepiece design. All are compatible with OEM style upper and lower collars and high performance applications. 84-04 B.T.; 86-03 XL Multiple parts valve springs. 978085 Seat load: 125@1.800" Open load: 275@1.300" Coil bind: 1.150" Rate lbs / inch: 300 978086 Seat load: 195@1.900" Open load: 515@1.250" Coil bind: 1.175" Rate lbs / inch: 492 978087 Seat load: 230@1.875" Open load: 700@1.200" Coil bind: 1.100" Rate lbs / inch: 696 978088 Seat load: 184@1.850" Open load: 422@1.280" Coil bind: 1.080" Rate lbs / inch: 425 05-17 TCA/B (excl. 110"); 04-22 XL; 08-12 XR1200; 03-10 Buell XB One-piece beehive style valve springs. Note: Will not fit 110" models. 978581 Seat load: 167@1.850". Open load: 377@1.280". Coil bind: 1.230". Rate lbs / inch: 370. 978582 Seat load: 193@1.850". Open load: 373@1.240". Coil bind: 1.150". Rate lbs / inch: 293.
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