GSC Power-Division Dual Valve Springs Kit with Ti Retainers for Toyota 2JZ-GTE Haltech 9 grade bolts are the

9 grade bolts are the best available

low tension oil rings

First: Ease of installation

Large radius cap corners with a shallow bolt spotface improves crank end fatigue strength

GSC Power-Division Dual Valve Springs Kit with Ti Retainers for Toyota 2JZ-GTE Haltech 9 grade bolts are theGSC Power Division Dual Valve Springs Kit with Ti Retainers for Toyota 2JZ GTE Part # 5266 The GSC Power Division Dual Valve Springs Kit with Ti Retatiners for Toyota 2JZ GTE Includes 24 Titanium Retainers, 24 Dual Valve Springs, 24 Inner Valve Spring Seats, and 24 Outer Valve Spring Seats. GSC5266 Dual Valve Spring Kit with Ti Retainer for Toyota 2JZ Platform Setup Coil Bind (in) Install Height (in) Seat Pressure (lbs) Open Pressure with GSC S3