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New LS3 Beehive spring set with retainers and collets.
Suits LS1, LS2 LS3 etc. Up to 560 lift
Perfect match with the BTR Truck Norris Cam
installed height 1.8"
295 lbs. pressure @ 1.250''
90 lbs. pressure @ 1.800'' installed height
GM Performance Kit Part number 12499224
spring part number 12625033 X16
Retainer part number 10166344 X16
Valve locks part number 10166345 X32
Comes as pictured
Great business to work with very knowledgeable and I highly recommend them for your ls1 commodoreparts
Tested these springs and there spot on .