Ferrea Single Valve Spring Kit for Nissan GTR R35 VR38DETT - KT4016 911 The new spring seats have

The new spring seats have a larger contact surface area and eliminate the need for a rubber spring seat

5″ Titanium Intake Kit for the R35 GT-R allows your engine to breathe the coldest air possible

Long term learning (Auto tune) on fuel

the trac bars help to eliminate wheel-hop in corner entry and can inprove bite on corner exit

Instead of designing complex brackets

Ferrea Single Valve Spring Kit for Nissan GTR R35 VR38DETT - KT4016 911 The new spring seats haveThe Ferrea Nissan GTR R35 VR38DETT Dual Valve Spring Kit is what we use in all of our in house builds. Ferrea makes the best valvetrain parts in the industry, hands down. Kit includes the following: Single Springs #S10137 (24) Titanium Retainers #E11107 (12) Titanium Retainers #E11110 (12) Seat Locators #SL1116 (24) Valve Locks #K10102 (24)