Exhaust› Headers, Manifolds and Components

Bull Boost

B Series Ramhorn 4-1 Header

$615.00

SKU: B-SERIES-RAMHORN-4-1-HEADER

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Bull Boost B Series Ramhorn 4-1 Header is an aftermarket exhaust component designed for Honda and Acura vehicles. It features a 4-1 merge collector for improved exhaust flow and is constructed with TIG welded CNC machined flanges. This header is a direct bolt-on part, requiring no modifications for installation and includes necessary hardware, bolts, and gaskets.
Show original supplier description
The Bull Boost B Series Ramhorn 4-1 Header is a performance exhaust component specifically designed for Honda and Acura vehicles equipped with B-series engines. This header features a true 4-1 merge collector, engineered to promote more equal exhaust flow and enhance peak horsepower gains. It is constructed using TIG welded CNC machined flanges, ensuring a precise fit and durable construction. The product is described as 100% brand new and includes all necessary hardware, bolts, and gaskets for a direct bolt-on installation, meaning no modifications are typically required. The surface finish is polished, offering both aesthetic appeal and corrosion resistance. The company also highlights strict quality control during the manufacturing process and offers a 1-year warranty. Available materials for customization include various grades of stainless steel (304/304L, 316/316L, 410/416), duplex stainless steel, carbon steel, and alloy steel. Technical specifications mention a part weight range of 2g to 30kgs and a maximum dimension of 600mm for diameter or length, with a minimum wall thickness of 1.5mm.

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.

Fitment

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Specifications

BrandBull Boost
Part NumberB-SERIES-RAMHORN-4-1-HEADER
CategoryExhaust
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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