GFB 99-00 WRX/STI TMS Respons Blow Off Valve Kit

GFB 99-00 WRX/STI TMS Respons Blow Off Valve Kit

Marsoni

M251S

$160.43

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

GFB 99-00 WRX/STI TMS Respons Blow Off Valve KitIf cars like yours typically suffer issues such as backfiring and stalling when using a fixed ratio atmosphere venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can achieve a blow off sound without having to put up with the issues. Like all GFB valves, the Respons utilises GFB's proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost

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We offer a 30-day return/exchange service after receiving.
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Like most of the other reviews here, the shirt runs too small and too short. Material was also incredibly uncomfortable. It also wasn't the color I was hoping it would be, but that's on me for not reading the fine print (eggshell white was very much not white) If you're looking at this for a certain costume/cosplay idea, it's probably not what you're looking for.

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Reviewed in the United States on February 18, 2026

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Terrorgod

Lowell, US

★★★★★ 5

Solid fit

Size: X-Large, Color: Eggshell White Black Mariner Stripe

Easy fit, comfortable material. Dont expect it to last forever but at the price its solid for the purpose of a halloween costume.

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Reviewed in the United States on November 1, 2025

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