Best in 7 days
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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
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Description
COMP Cams GM 603/604 0.570in Lift 1.077/1.282 OD Beehive Hustler Valve Spring KitCOMP Cams Hustler Valve Springs are an improved version of the popular GM LS6 "blue" valve spring. They are based on popular GM part #12499224 and #12565313 LS6 springs but with 4% higher seat and open loads for better dynamic control, as well as an extra . 020" of lift capability. They are an excellent performance upgrade in GM 603 604 and CT525 LS crate Race Applications with tight rules packages.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 1518 reviews
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Product Reviews
★★★★★ 5
Cats would like this too
Color: Red
Great doggie buffet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 1
PAY CLOSE ATTENTION TO THE SIZE.
Color: Red
I take full responsibility for not paying closer attention to the size specifications. If you have a smaller breed like a Yorkie, Maltese, or a toy Poodle, this product is perfect for your pup. However, for larger dogs, this is utterly inadequate. It won't entertain them for even 20 seconds, let alone 20 minutes.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Perfect Toy
Color: Red
Perfect toy for our dogs - no complaint
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Reviewed in the United States on May 28, 2026
★★★★★ 4
Fun food filled log for dogs
Color: Brown
Nice but too small
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Reviewed in the United States on March 5, 2026
★★★★★ 5
Good quality
Color: Red
Very sturdy for super chewer dog. Only change I would make is I wish it held more kibble but dog loves it and I don’t worry she will choke on a broken piece when I’m away.
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Reviewed in the United States on April 15, 2026
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