World's Largest Aftermarket Motorcycle Parts and Accessories Superstore!


Twin Power Complete Valve & Spring Kit

Select your motorcycle to guarantee fitment! Select A Motorcycle

  • Twin Power Complete Valve & Spring Kit
Product may vary from photo(s).

$229.05 Save 10%! Regularly: $254.99

Free Ground Shipping

Checking availability...

– Order in the next to ship today

J&P Part: 805-688 New! On Sale!


Twin Power Complete Valve & Spring Kit

• Twin Power is proud to offer a line of high quality USA made valve and spring kits.

• Offered as Black Diamond Valve kits or Complete Valve and Spring Kits. Valve kits include 4 stock size Black Diamond valves for each application. Engine kits include 4 stock size Black Diamond valves, a complete O.E.M. replacement spring kit, steel retainers and keepers, and valve guide seals where applicable.

• Black Diamond Stainless steel valves are impregnated by a special German process to a depth of .002", with a surface buildup 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 are O.E.M. type replacement kits, designed to give stock pressures and work with stock cam profiles.

• These kits are manufactured to original O.E.M. specs using premium modern materials, design protocols and manufacturing techniques.

• All components are high quality parts. 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.

• Valve guide seals are red 100% Viton valve stem seals.

• Designed to have optimum fitment, allow maximum lift and maximum life.

• Resistant to high temperatures.

Note: Late shovel kits include a stock type "K" line seal. Knucklehead and Ironhead Sportsters do not include seals.

Made In The USA This product was proudly made in the USA

Product Specs

Manufacturer Part Number: T20-21090

Sold in Units: Kit


Select your motorcycle to guarantee fitment! Select A Motorcycle

Click (+) to view all compatible models

Harley-Davidson® Models

Sportster 1200 50th Anniversary XL50 : 2007
Sportster 1200 Custom Anniversary XL1200C : 2013
Sportster 1200 Custom XL1200C : 2004–2014
Sportster 1200 Custom XL1200CA : 2013–2014
Sportster 1200 Custom XL1200CB : 2012–2014
Sportster 1200 Custom XL1200CP : 2011–2014
Sportster 1200 Forty-Eight XL1200X : 2010–2014
Sportster 1200 Low XL1200L : 2006–2011
Sportster 1200 Nightster XL1200N : 2007–2012
Sportster 1200 Roadster XL1200R : 2004–2009
Sportster 1200 Seventy-Two XL1200V : 2012–2014
Sportster 1200 SuperLow XL1200T : 2014
Sportster 883 Custom XL883C : 2004–2010
Sportster 883 Iron XL883N : 2009–2014
Sportster 883 Low XL883L : 2005–2010
Sportster 883 Roadster XL883R : 2005–2014
Sportster 883 Standard XL883 : 2004–2009
Sportster 883 SuperLow XL883L : 2011–2014
Fast Free Shipping on Orders at $99.99 & Over
Free Tech
120 Day

Select Your Motorcycle

Live Help

Get Help From Our Industry Experts

Call Us 24/7 1-800-318-4823

Help / FAQs