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2017roadiron-cruiser_en

709 PERFORMANCE VALVE SPRING SETS JIMS® Springs are made from the highest grade materials, heat treated to the highest industry standards, then torture tested on the street and the track to ensure not only consistent quality, but unmatched performance as well. JIMS® Spring Kits incorporate an interference double spring design with damper. The damper keeps the inner and outer spring coils from locking together, while controlling power robbing harmonics in the spring. Description Application Seat load Open load Coil bind Rate Lbs/In 53-0615 1.460 Double Spring w/damper 84-04 EVO/Twin Cam®** 125@1.800 275@1.300 1.150" 300 53-0616 1.540 Double Spring w/damper 84-04 EVO/Twin Cam®** 195@1.900 515@1.250 1.175" 492 53-0617 1.550 Double Spring w/damper 84-04 EVO/Twin Cam®** 230@1.875 700@1.200 1.100" 696 53-0608 1.510 Double Spring w/damper 84-04 EVO/Twin Cam®** 184@1.850 422@1.280 1.080" 425 S&S® HIGH-PERFORMANCE VALVE SPRING KITS S&S® valve spring kits are designed to simplify high-lift cam installation and increase spring force to reduce the risk of valve float. The design of S&S® valve springs eliminate most of the complicated procedures and specialized tools required to prepare cylinder heads for high lift cams. While confirming critical clearances remains the responsibility of the engine builder, the majority of street cams will require no additional modification of the cylinder head when S&S® valve spring kits are used. In some instances, S&S® valve spring kits serve as excellent replacements in stock rebuild applications. All kits include detailed instructions. S&S® high-performance valve Spring Kits for 48-84 Big twin engines .550” lift double valve Spring Kit For 48-84 big twin with up to .550” lift. Includes 4 inner springs, 4 outer springs, and 4 aluminum top collars. Use with stock-style bottom collar, valve guides, valves with stock 3⁄8” stem, and stock keepers. Compatible with thin-stem valves if thicker keepers that maintain correct valve stem-top collar engagement are used. Late single bottom collars are available for use in S&S® cylinder heads for shovels and stock late 81-85 heads. NOTE: Panhead engines usually require clearancing between rocker cover and top collar. For 1948-1984 Panhead and Shovelhead Engines 50-902038 Bottom Collar (each) – Late 81-85


2017roadiron-cruiser_en
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