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Exhaust› Headers, Manifolds and Components

Weapon-R

Street Header 4-2-1 Exhaust Header

Name: Street Header 4-2-1 Exhaust Header
Brand: Weapon-R
SKU: 953-116-102

$650.00 $552.00 Save $98.00

SKU: 953-116-102

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Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Weapon R Street Header is a high-performance 4-2-1 exhaust header designed to boost horsepower and torque for 2004-2006 Scion xA and xB models. Developed and tested on Weapon R’s Dynapack dyno, this header delivers noticeable gains while supporting spirited driving.

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The Weapon R Street Header is a high-performance 4-2-1 exhaust header engineered to enhance horsepower and torque for 2004-2006 Scion xA and xB models with the 1.5L 1NZFE engine. Constructed from stainless steel with a 4-2-1 design, this header is intended for racing applications. It features a 2.5-inch collector for high exhaust flow and is designed to eliminate the catalytic converter, contributing to better performance gains. The design aims to provide higher torque gains through stepped tubing and is best suited for vehicles with high RPM rev bands. This header is explicitly stated to be for off-road use only and is not street legal. Furthermore, it is not for sale or street use in California and CARB states.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

Brand	Weapon-R
Part Number	953-116-102
Category	Exhaust

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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