Performance valve springs required on 99-04 engines and performance pushrods and lifters recommended

With elastic at the opening you can close the collar down completely

Compact and aggressive 2-into-2 exhaust design

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The box end head is angled at 15° from the handle

thermo tec adhesive back heat shield Size:30.5cm x 30.5cm Performance valve springs required onThermo Tec Adhesive Back Heat Shield This Adhesive Back Heat Shield effectively blocks up to 90% radiant heat up to 2000F (1093C) and direct heat up to 300F (149C). Made from woven silica with a flexible aluminized finish and a strong self adhesive backing, its easy to trim, apply, and ideal for painted or plastic parts, as well as wiring and hoses. Features: Blocks up to 90% radiant heat and withstands up to 2000F (1093C). Handles direct heat up to