SUBARU 2002-2004 STI FRONT DRIVESHAFT BAR UPGRADE-600HP

Please Note: This driveshaft bar upgrade is for the 2004 STi ONLY. One kit is for 2 driveshafts! RACING UPGRADE With the RACING SPEC upgrade option, polished internals, vented boots, and high temp grease are used. Standard grease liquefies at 150 degrees Celsius, the high temp grease has a much higher break down temp. There is a vented boot that keeps the boot from expanding. The benefits are keeping c.v. temps down, Which pro longs axle life and boot life. In racing settings axle failure 9 times out of 10 caused by high temperatures in the c.v’s. RACING SPEC upgrade is recommended for extreme high power cars and endurance races. You can order the upgrade here: https://eskoreiner.mycashflow.fi/product/85/