TP Pro-Series Compression Releases Compression releases make starting your high-compression or large-displacement engine virtually effortless. Self-releasing valves manufactured from stainless steel with a billet aluminum push-button. 687312 Standard release (sold each) Peaked Rocker Box Bolt Covers Our peaked rocker box bolt covers are the final touch that makes the difference. Chrome-plated billet aluminum construction with simple push-on installation. Fits: All 99-17 Twin Cam engines 696781 Peaked rocker box bolt covers (set/4) Note: Sold in sets of 4. Some models may require more than one set to cover all visible rocker box bolts. 688870 688873 BEFORE AFTER 688874 688870 9 688871 688876 688873 Spark Plug/Head Bolt Cover Kits Conceal and hide the head bolts and spark plug area on your motor. These aluminum die cast spark plug and head bolt covers comes in various styles like a chrome smooth bridge style or highlighted finned style either black or natural aluminum. Easy to install in minutes. Includes all necessary mounting hardware. Sold in pairs. Fits all Twin Cams models 99-17 (except SE heads or 110 SE engines) 688870 Chrome smooth bridge style. Replaces OEM# 43858-00 Fits Twin Cams EFI models 99-17 688872 Natural highlighted finned style . Replaces OEM# 43857-00 688873 Black highlighted finned style. Replaces OEM# 43859-00 Fits Twin Cam Carbureted models 99-06 688874 Natural highlighted finned style . Replaces OEM# 43840-01 688875 Black highlighted finned style. Replaces OEM# 43841-01 Fits Sportster models 04-20, except 08-10 XR 1200, 10-13 XR 1200R 688871 Chrome smooth bridge style. Replaces OEM# 44432-04 688876 Black highlighted finned style. Replaces OEM# 44296-04 688877 Natural highlighted finned style. Similar to OEM# 44296-04 Chrome Spark Plug Covers by Kuryakyn Simply pushes over the spark plugs to cover the plugs and head bolts next to them. Chromeplated die-cast construction. Sold in pairs. 48018 Fits Evolution Big Twin 84-99 and Sportster models from 86-03 9.100
