Oversize Exhaust Valve Guide. Fits Twin Cam 2005-17 & Sportster 2005-2021. +.001in. Outside Diameter DNA-21582442A-BRH compliant ride with no bottoming

compliant ride with no bottoming

* Machined from 6061 T6 Highly durable and light weight alloy

Get the proven performance of the S&S cam chest kit while maintaining the freedom to use any cam you like for your Twin Cam with this new kit

* Replaces OEM #'s 56567-86B

* Replaces OEM # 37069-90

Oversize Exhaust Valve Guide. Fits Twin Cam 2005-17 & Sportster 2005-2021. +.001in. Outside Diameter DNA-21582442A-BRH compliant ride with no bottomingCast Iron: After chemically separating several samples of cast iron material , analysis and evaluating the test data, we decided to have our own specification of cast iron made exclusively , us. We specify elements such as carbon, silicon, manganese, nickel, chromium, copper and sulfur to produce a highly pearlitic structure with dense fine grains , excellent wear resistance. * OD = 0. 5630" (+0. 001" Oversize) * ID = 0. 2750" Matching Intake Guide #