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PAC Racing 600 Series Valve Spring Retainers PAC-R650-16
Part Number: RSC-PAC-R650-16
PAC Racing 600 Series Valve Spring Retainers
Dual Spring 600 Series Retainer - Tool Steel Retainer for RPM Series Dual Valve Springs. Lock angle: mini 8
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Estimated Ship Date: Dec 14, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-R650-16
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-R650-16
Outside Diameter of Outer Spring (in.):
1.250 in.
Retainer Material:
Tool steel
Lock Style:
8 degree
Valve Spring Style:
Standard
Retainer Style:
Standard
Number of Springs Per Valve:
Dual
Outside Diameter of Middle Spring (in.):
0.940 in.
Inside Diameter of Inner Spring (in.):
0.685 in.
Locks Included:
No
Quantity:
Sold as a set of 16.
Notes:
Dual spring retainer for PAC Racing LS springs.
PAC Racing 600 Series Valve Spring Retainers
PAC Racing 600 Series valve spring retainers are the latest developments from PAC Racing Springs. These retainers feature ultra-lightweight designs from proprietary valve spring-type alloys. PAC Racing's sophisticated processing, such as micro-polishing and Nano Peen technology, are used to enhance retainer life. The high hardness of the steel provides higher wear resistance properties to offer superior abrasion resistance and improved fatigue strength, while also reducing weight. PAC Racing 600 Series valve spring come with a reduced step and need to be combined with a matching seat (where applicable) to optimize the performance of the valvetrain.
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