COMP Cams Magnum Roller Rocker FS/Olds

Marsoni

M251S

$36.02

Get it in 3 business days with 1 day shipping. Friday, May 29

COMP Cams Magnum Roller Rocker FS/Oldsand Oldsmobile V8 260 455 Applications is the ultimate street Rocker. With a 3 8" Stud diameter and 1. 6 ratio, it is designed for Serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly Steel, which is a superior material that will not flex and assures maximum lift. Their Roller tip reduces friction, while stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower

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If your dog pulls on these (and why wouldn’t he?), the rope immediately comes out. Turns out they just fuse the ends of the nylon rope together, which is no match for a dog playing tug. Any dog, any level of pulling will dismantle these. We’ve managed to reinsert the rope to a couple of these and KNOT it, which gives you a shorter rope but a toy that can withstand some play. But if I had wanted a DIY toy, I’d have used the balls and rope I already own.

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Reviewed in the United States on December 11, 2025