JIMS, high performance valve spring set. 125@1.800"

712 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 Wind- shields Forward controls, Footpegs Miscellaneous MOTORPARTS - TOP END 10 KPMI valve spring kits 57-83 XL 36-47 KNUCKLE 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 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) 524452 524592 524525 02-17 V-ROD 978085 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, one- piece 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"); 04-21 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. 978581 Lightweight racing valve spring kit for standard 7mm diameter valve stems. Chrome silicone dual spring set, titanium top collars and steel lower collars. Specifications: Max valve lift: .5000”. Installed height: 1.360". Seat pressure 72 lbs. Open pressure: 230 lbs. @ .500” valve lift. Note: Re-use stock valve keys. .550" valve lift Installed spring pressure 72 lbs. 524525 Titanium top collars Cylinder head clearances When working on the heads, or when installing a new cam, it is always recommended to check for adequate clearance at rocker covers and places like: Piston to valve - .060" Valve to valve - .040" Valve springs from max lift to coilbind - .060" Top collar to valve guide or seal - .060" Installed spring height Shovel/Pan - 1.520" Installed spring height Evo B.T./XL - 1.800" Installed spring height should not be increased by more than .040" Recommended clearance information supplied by S&S Cycle, Inc. tech-tip 29