(P528) 28 in. Plug-End Extension Spring (0.207 in. No. 5 Wire) (PAIR)

(P528) 28 in. Plug-End Extension Spring (0.207 in. No. 5 Wire) (PAIR)

Marsoni

M251S

$59.85

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

(P528) 28 in. Plug-End Extension Spring (0.207 in. No. 5 Wire) (PAIR)2 x P528 springs support 105 lbs. to 175 lbs. garage doors 4 x P528 springs support 200 lbs. to 350 lbs. garage doors Length over coils: 28 in. Outside diameter: 1 5 8 in Wire gauge: 0. 207 in. (no. 5 wire) Initial tension: 135 lbs. 145 lbs. Maximum allowable stretch: 22 in.

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Id give it a 4.5 star only because the holes weren't well rounded on the interior were they punch through the mold to make the holes. Other than that I tested if it holds full of water and all seals work. The fix: grab a knife scrap the inside ring and it will fall off. If you want a more perfect feel (not rough) heat up a flat head or screwdriver that has a round stem and use that after heating to lightly melt the plastic to smoothen it out. I didnt do 2nd part dont care. Great size, will fit under motorcycles easily like my 04 zx10r.

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Reviewed in the United States on May 16, 2026