NGK Iridium Spark Plug - BPR-8EIX

Marsoni

M251S

$19.14

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

NGK Iridium Spark Plug - BPR-8EIXNGK Iridium Spark Plugs Cheapest horsepower for your XS you can buy ! BPR8EIX Fits: 1970 72 650's Adds a solid 2 HP to your 650 While Dyno testing a problem bike (a TX750) it was discovered that customer supplied Iridium spark plugs caused the engine to gain 2 HP. Further Dyno testing on other stock and modified 650's showed the same results! The gain seems to be from improved combustion chamber flame front spread in the 650's old style combustion

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Good fit. Helps keep my vials sealed and sanitary. Clean before and during each use to prevent issues. The large caps are a great fit on 10ml water vials and the small caps are a great fit on 3ml research vials. The price was good, the variety of size and color are nice. Overall no complaints to report.

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Reviewed in the United States on February 21, 2026

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Angela

Bozeman, US

★★★★★ 5

💯

Súper buenas y se puede lavar

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Reviewed in the United States on March 9, 2026

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Ray Hernandez

Omaha, US

★★★★★ 4

Great for the price

They are very nice quality, but the 3ml are a little tight on the vial. This is not necessarily a bad thing, but something to note. The 10ml are a little lose on 10ml, but work great on 30ml hospira bac water

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Reviewed in the United States on February 2, 2026

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Elizabeth Allen

Birmingham, US

★★★★★ 3

Some easy, some not

Some fit good, some are a little rough to get on

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Reviewed in the United States on February 4, 2026

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Jacqueline