Valve and Spring Kits

Made In The USA
Twin Power Valve and Spring Kits

Twin Power is proud to introduce a new line of high-quality USA-made valve and spring kits to the product line. These are offered as Replacement Valve Kits or Complete Engine Kits. Valve kits include (four) stock size valves for each application. Engine kits include (four) valves, a complete O.E.M. replacement-style spring kit, steel retainers and keepers, and valve guide seals, where applicable. From Knuckleheads to the latest Twin Cam models, we give you everything you need in one kit. Only one part number to order for a complete cylinder head overhaul. Easy-to-order, easy-to-stock, and made in USA.


Black Diamond Valves Black Diamond™ Stainless steel valves are impregnated by a special German process to a depth of .002, with a surface build-up of .0002. This Black Diamond process improves wear properties, reduces friction and provides resistance to corrosion. Valves are lightweight, strong, one-piece forgings with profiles that provide excellent flow characteristics.  


Spring Kits O.E.M. type replacement kits are designed to give stock pressures and work with stock cam profiles. These kits are manufactured to original O.E.M. specifications using premium modern materials, design protocols and manufacturing techniques. All components are the high-quality parts you expect from Twin Power. Valve springs are wound from super-clean chrome, silicon valve spring wire that has been heat-treated and shot-peened. The retainers, keepers and bases are designed to provide maximum mechanical strength. Beehive-style springs are supplied where applicable for stock replacement. 


Valve Guide SealsRed 100% Viton® valve stem seals are designed to have optimum fitment, allow maximum lift and to give maximum life. They are resistant to high temperatures, petroleum products and the corrosive gasses.


*Late Shovel kits include a stock type K Line seal. Knucklehead and Ironhead Sportsters® do not include seals.

Product Name SKU Price
Valve and Spring Kits, 1988-2003 XL 1200 ENGINE KIT 481277
$254.50
Valve and Spring Kits, 1988-2003 XL 1200 VALVE KIT 481278
$115.99
Valve and Spring Kits, 2004 - 2014 XL 1200 SPORTSTER ENGINE KIT 481279
$254.50
Valve and Spring Kits, 2004 - 2014 XL1200 SPORTSTER VALVE KIT 481280
$209.99
Valve and Spring Kits, 1936-1947 HD KNUCKLEHEAD VALVE KIT 481256
$115.99
Valve and Spring Kits, 1948-1965 HD PANHEAD ENGINE KIT 481257
$224.99
Valve and Spring Kits, 1948-1965 HD PANHEAD VALVE KIT 481258
$106.50
Valve and Spring Kits, 1957 - 1969 VALVE ENGINE KIT 481260
$121.50
Valve and Spring Kits, 1970 - 1983 SPORTSTER ENGINE KIT 481261
$215.50
Valve and Spring Kits, 1966 - 1977 SHOVELHEAD 74" ENGINE KIT 481263
$215.50
Valve and Spring Kits, 1966 - 1977 SHOVELHEAD74" VALVE KIT 481264
$97.50
Valve and Spring Kits, 1978-1983SHOVELHEAD 80" ENGINE KIT 481265
$215.50
Valve and Spring Kits, 1978-1983 SHOVELHEAD80" VALVE KIT 481266
$97.50
Valve and Spring Kits, 1984-1999 EVOLUTION 80" ENGINE KIT 481267
$235.95
Valve and Spring Kits, 1984-1999 EVOLUTION 80" VALVE KIT 481268
$97.50
Valve and Spring Kits, 1986-2003 XL 883 ENGINE KIT 481269
$284.50
Valve and Spring Kits, 1986-2003 XL 883 VALVE KIT 481270
$145.99
Valve and Spring Kits, 1999-2004 TWIN CAM 88" ENGINE KIT 5/16 STEM 481271
$235.95
Valve and Spring Kits, 1999-2004 TWIN CAM 88" VALVE KIT 5/16 STEM 481272
$97.50
Valve and Spring Kits, 2005 - 2014 TWIN CAM 88" - 103" ENGINE KIT 481273
$236.99
Valve and Spring Kits, 2005 - 2014 TWIN CAM 88" - 103" VALVE KIT 481274
$115.99
Valve and Spring Kits, 2003 - 2007 BUELL XB9 ENGINE KIT 481275
$331.50
Valve and Spring Kits, 2003 - 2007 BUELL XB9 VALVE KIT 481276
$209.99

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Additional Information

Made In The USA Yes