Supertech Dual Valve Spring Kit w/ Titanium Retainers Nissan Skyline RB25 DOHC w/Solid Lifters | SPRK-TS1015-RB25 Impreza_2008-2011 Why Choose the Clutch Masters

Why Choose the Clutch Masters 725 PRO Series

an aggressive engagement and the ability to handle up to 574ft/lbs of torque

AVS® Ventvisors come backed by a limited lifetime warranty

Helps regulate crankcase pressure

Thickness 25mm

Supertech Dual Valve Spring Kit w/ Titanium Retainers Nissan Skyline RB25 DOHC w/Solid Lifters | SPRK-TS1015-RB25 Impreza_2008-2011 Why Choose the Clutch MastersOverview The Supertech SPT Dual Valve Spring Kit (SPRK TS1015 RB25) is a high performance valve spring upgrade engineered specifically for the Nissan Skyline RB25 DOHC 24 valve engine equipped with solid lifters. Designed for serious performance builds, forced induction applications, and high rpm race engines, these dual valve springs provide dramatically increased spring pressure and improved valve control far beyond OEM specifications. Whether