Availability
Valve Springs, 0.800 in. Max Valve Lift, 1.300 in. O.D., 813 lbs./in., 1.800 Installed Height, Set of 16
Part Number: RSC-PAC-1335-16
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Valve Springs, 1300 Series Circle Track, Dual, 1.564 in. O.D., 525 lbs./in. Rate, 1.140 in. Coil Bind Height, Set of 16
Part Number: RSC-PAC-1385-16
Not Yet Reviewed
Estimated Ship Date: Dec 12, 2025 if ordered today
Estimated Ship Date: Dec 12, 2025 if ordered today
Valve Springs, 1300 Series Circle Track, Dual, 1.570 in. Outside Diameter, 743 lb/in., 0.780 in Inside Diameter, Set of 16
Part Number: RSC-PAC-1344-16
Not Yet Reviewed
Estimated Ship Date: Jan 21, 2026 if ordered today
Estimated Ship Date: Jan 21, 2026 if ordered today
1.500 OD 2.150 0.900 inch lift Dual Spring
Part Number: RSC-PAC-1329-16
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Valve Springs, Dual, 1.570 in. Outside Diameter, 510 lbs./in. Rate, 1.200 in. Coil Bind Height, Set of 16
Part Number: ISK-9995RAD
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Valve Springs, 1300 Series, Dual, 1.574 in. O.D., 550 lbs./in. Rate, 1.150 in. Coil Bind Height, Set of 16
Part Number: RSC-PAC-1395-16
Not Yet Reviewed
Estimated Ship Date: Dec 8, 2025 if ordered today
Estimated Ship Date: Dec 8, 2025 if ordered today
Valve Springs, Dual, 1.430 in. Outside Diameter, 330 lbs./in. Rate, 1.120 in. Coil Bind Height, Set of 16
Part Number: ISK-9955RAD
Estimated Ship Date: Dec 8, 2025 if ordered today
Estimated Ship Date: Dec 8, 2025 if ordered today
Valve Springs, 1300 Series, Dual, 1.564 in. O.D., 513 lbs./in. Rate, 1.150 in. Coil Bind Height, Set of 16
Part Number: RSC-PAC-1386-16
Not Yet Reviewed
Estimated Ship Date: Dec 11, 2025 if ordered today
Estimated Ship Date: Dec 11, 2025 if ordered today
Valve Springs, Dual, 1.570 in. o.d., 1.200 in. Coil Bind Height, 0.800 in. Maximum Lift, Set of 16
Part Number: ISK-9989-RAD
Not Yet Reviewed
Estimated Ship Date: Jan 27, 2026 if ordered today
Estimated Ship Date: Jan 27, 2026 if ordered today
SUM-8727 Pro LS Truck Torkinator Level 2 Cam Kit, Beehive Springs, Gaskets, Bolt, 200/205 Dur. 113 +4, .550/.550 Lift, 3-Bolt, 4.8, 5.3, 6.0 , 6.2
Part Number: SUM-8727-2-BHV
Not Yet Reviewed
Cannot be shipped Internationally if ordered today
Cannot be shipped Internationally if ordered today
SBC or BBC 1.500 Dual Springs, Advanced S.R.1.000 Max lift @ 420 Lb. seat @ 2.175 Installed, 1200 Lb. @ 1.175 Open, 1.130 C.B., 780 Rate,144g PAC 1355
Part Number: SUM-174041DP-16
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
BBC 1.645 Triple Springs, Endurance S.R., .950 Max Lift @ 350 Lb. seat @ 2.150 Installed, 1004 Lb. @ 1.200 Open, 1.130 C.B., 688 Rate, 183g PAC 1358
Part Number: SUM-174046TP-16
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Valve Springs, Dual, 1.600 in. O.D., 650 lbs./in. Rate, 1.150 in. Coil Bind Height, Set of 16
Part Number: ISK-9999-RAD
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Valve Springs, Dual, 1.540 in. Outside Diameter, 0.745 in. Inner Spring Inside Diameter, 860 lbs./in. Rate, 1.140 in. Coil Bind Height, Set of 16
Part Number: ISK-DR1256RML
Not Yet Reviewed
Valve Springs, Hot Rod Series, Dual, 1.304 in. O.D., Titanium Retainers, 7 degree Locks, Kit
Part Number: RSC-PAC-KS18
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Valve Springs, 1300 Series Circle Track, Dual, 1.575 in. Outside Diameter, 620 lb/in., 0.720 in Inside Diameter, Set of 16
Part Number: RSC-PAC-1341-16
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Valve Spring, 1300 Series, Dual, 1.574 in. Outside Diameter, 506 lb/in., 0.826 in Inside Diameter, Set of 16
Part Number: RSC-PAC-1342-16
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Valve Spring, 1300 Series, Triple, 1.667 in. Outside Diameter, 752 lb/in., 0.635 in Inside Diameter, Set of 16
Part Number: RSC-PAC-1351H-16
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Combo, COMP Cams, Rocker Arms, Roller, 1.6 Ratio, Pushrods, 5/16 in., 7.200 in. Long, Chevy, Small Block, Kit
Part Number: CMB-09-0011
Not Yet Reviewed
Valve Springs, 1500 Series Circle Track Endurance, Dual, 1.284 in. O.D., 560 lbs./in. Rate, 1.180 in. Coil Bind Height, Set of 16
Part Number: RSC-PAC-1530-16
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Valve Springs, 1500 Series, Dual, 1.514 in. O.D., 483 lbs./in. Rate, 1.160 in. Coil Bind Height, Set of 16
Part Number: RSC-PAC-1561-16
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Valve Springs, Hot Rod Series, Dual, 1.290 in. O.D., Titanium Retainers, 7 degree Locks, Kit
Part Number: RSC-PAC-KS17
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Valve Spring Kit
Part Number: RSC-PAC-KS21
Not Yet Reviewed
Race Day LS S/P Cath port Camshaft, 8620, Hyd Roller, 3 bolt, 244/252 dur @.050", .621"/.604" lift, 108 deg LSA
Part Number: CXM-03-08-0080
Not Yet Reviewed
Estimated Ship Date: Dec 8, 2025 if ordered today
Estimated Ship Date: Dec 8, 2025 if ordered today
Valve Springs, Lightweight Racing, Dual, Titanium Retainers, Kawasaki, Kit
Part Number: KPM-40-40850
Not Yet Reviewed
Estimated Ship Date: Dec 15, 2025 if ordered today
Estimated Ship Date: Dec 15, 2025 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.