F4 Caliper (O-Ring) 1.87" Piston 3.5" Mount 1.25" Rotor 0.8" Pad - 002-0187ssp-1

Marsoni

M251S

$279.78

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

F4 Caliper (O-Ring) 1.87" Piston 3.5" Mount 1.25" Rotor 0.8" Pad - 002-0187ssp-1F4 4 Piston Caliper Seal Package: Round Piston Size: 1. 87" Mount: 3. 5" Rotor Thickness: 1. 25" Pad Thickness: 0. 8" SKU: 002 0187ssp 1 Our flagship caliper for oval track and off road use. The TBMs F4 caliper utilizes forged outer halves, heat treated center sections and our patented fluid transfer system to create the quickest, most rigid zero drag caliper available today. Championships are won with F4 calipers. Typical Applications: Asphalt Late

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I trust the Nylabone brand and would not buy a cheap substitute to save a few bucks. This ring is heavy duty. I got it for our 9-week-old puppy and it keeps her interested and entertained with all the little nubs. She uses it more as a toy than something to chew on, tossing it around and mouthing it. It's very hard so I'm not worried about her being able to chew off any little pieces at this point. This satisfies her for now and helps to keep her busy and reigns in some of her puppy energy. Recommend!

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Reviewed in the United States on March 9, 2026