BTR DRAG RACE SPRINGS - 1.000" LIFT - SP449-16 BTR’s Triple Valve Spring for Drag Race Applications is the biggest, baddest spring we offer, bar none! This spring will support up to a whopping 1.00†of lift.
• 1.677†od
• 3450 lbs @ 2.200â€
• 400 lbs @ 2.100â€
• 1077 lbs @ 1.200â€
• Coil bind @ 1.140â€