# BTR knows that sometimes you need higher performance spring package, but due to class restrictions or cylinder head / valve seal design, dual springs are not possible. These springs fill the gap between a LS6 spring and a BTR Platinum dual spring. Upgrade to a SR007-16 titanium retainer set for added lightness and strength or use OEM locks and retainers.

SP018-1 Beehive Valve Spring .625 Lift Features:

• 125 lbs @ 1.800 in. Installed pressure / height
• 350 lbs @ 1.200 in. Open pressure / height
• 365 lbs @ 1.175 in. Open pressure / height
• Coil bind @ 1.100 in.
• I.D. top of spring .645"
• O.D. top of spring 1.02"
• I.D. bottom of spring .9115"