Bolt-in cam for more torque with stock compression. Works well with carbs or fuel injection. Cams work well with fuel injection or carburetor models. Similar to the EV-23 cam.Can be used with stock valve springs and tappets. Before you unwrap your parts double check your fitment and once unwrapped, look the item over before trying to install it. If you can snap a picture of the damage and notify us ASAP we can replace the order right away. Notify us right away so we start the process. We're happy to step in and get the ball rolling. An estimated restock date will be provided at the time of cancellation. The item "Andrews TW21 Series Grind Chain Drive Cam for Harley Twin Cam 99-06.498 Lift" is in sale since Sunday, March 1, 2015. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Camshafts". The seller is "easternpc" and is located in Gambrills, Maryland. This item can be shipped worldwide.