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Xcessive Manufacturing DIY Exhaust Kit - 2.5" Lexus IS300 01-05

Original price $51.60 - Original price $661.00
Original price
$240.00
$51.60 - $661.00
Current price $240.00

Build a custom exhaust system with the Xcessive Manufacturing 2.5-Inch DIY Stainless Exhaust Kit for the 2001–2005 Lexus IS300. Designed specifically for DIY fabricators and engine swap enthusiasts, this all-stainless mandrel-bent exhaust kit provides the tubing and components needed to build a high-quality custom exhaust without purchasing unnecessary extra material.

The modular design allows you to configure the system for naturally aspirated, turbocharged, or V8-swapped applications. Slip-fit connections simplify mock-up and alignment, making final welding easier whether you're using MIG or TIG.

The 2.5-inch tubing offers excellent ground clearance and is ideal for most street-driven builds producing up to approximately 350 horsepower. For higher horsepower applications, Xcessive Manufacturing recommends their 3-inch DIY exhaust kit.

Premium Stainless Steel Construction: Manufactured from corrosion-resistant stainless steel for long-lasting durability.

Mandrel-Bent Tubing: Smooth bends maximize exhaust flow while maintaining consistent tubing diameter.

DIY-Friendly Design: Slip-fit connections make test fitting, alignment, and final welding quick and simple.

Modular Configuration: Build an exhaust system for naturally aspirated, turbocharged, or V8 engine swaps.

Excellent Ground Clearance: The 2.5-inch diameter provides improved clearance for lowered street cars.

Supports Up to Approximately 350 HP: Ideal for naturally aspirated, turbocharged, and V8 applications up to roughly 350 horsepower.

Specifications:

  • Manufacturer: Xcessive Manufacturing

  • Product Type: DIY Exhaust Kit

  • Tubing Diameter: 2.5 Inches

  • Material: Stainless Steel

  • Tubing Style: Mandrel Bent

  • Connection Style: Slip Fit

Base Kit Includes:

  • (2) 90° Mandrel Bends

  • (2) 45° Mandrel Bends

  • (1) 4-Foot Straight Section

  • (2) Stainless Steel Exhaust Hangers

Optional Configurations:

Full Straight Kit

  • Includes an additional 4-foot straight section for straight-pipe exhaust systems without a rear muffler.

Naturally Aspirated Front Kit

  • Adds the factory-style header Y-flange and a 2-into-1 merge collector for building a custom Y-pipe.

V8 Front Kit

  • Includes a 2-into-1 merge collector and additional tubing for merging dual exhaust banks into a single exhaust system.

Vehicle Fitment:

  • Lexus IS300 (2001–2005)

Important Notes:

  • Base Kit is designed for:

    • Naturally aspirated applications from the Y-pipe rearward (cat-back).

    • Turbocharged applications from the downpipe rearward.

  • Optional muffler shown in product photos is sold separately.

  • Recommended for applications producing up to approximately 350 horsepower.

  • Xcessive Manufacturing recommends their 3-inch DIY Exhaust Kit for builds exceeding 350 horsepower.

  • Professional welding and fabrication are required.

  • Professional installation is recommended.

  • Intended for off-road, racing, and custom fabrication applications.

Why Choose Xcessive Manufacturing:

Xcessive Manufacturing designs fabrication components specifically for Toyota and Lexus enthusiasts who want flexibility without sacrificing quality. Their DIY Exhaust Kits eliminate unnecessary tubing while providing the exact bends and straight sections needed to build a professional-quality custom exhaust system.

The Xcessive Manufacturing 2.5-Inch DIY Exhaust Kit is the perfect foundation for building a custom stainless exhaust system on your Lexus IS300, whether you're running a naturally aspirated engine, turbo setup, or V8 swap.

About Us

We are passionate Lexus and Toyota enthusiasts dedicated to providing the highest quality aftermarket parts to enhance your ride. Our goal is to help you find the perfect performance upgrade, whether you're building your dream car or just adding that next improvement. We take pride in offering products that we trust for our own vehicles.

Shipping

Shipping times vary based on item availability and specific lead times. You can expect an email with an estimated shipping date within 1-3 days of placing your order. Many in-stock parts ship within 2-5 business days, while certain built-to-order items may take up to 7-10 business days. For back-ordered items, availability may vary, but we will email you with any ETA changes.

Once your items are ready to ship, we will send tracking information via email so you can easily follow your package from our warehouse to your door. Please note, some parts may be shipped separately and could arrive at different times. Shipping costs apply to the lower 48 states, unless stated otherwise, and international orders may be subject to additional customs or duties fees.

What to Expect Upon Delivery

Upon receiving your order, please inspect the items immediately for any damage or missing parts. Verify all items against the packing slip or instructions before starting installation. We cannot be held responsible for costs incurred from delays due to missing items.

If any items are damaged or missing, please get in touch with us within 14 days of receipt so we can assist with a replacement. Claims made after this period will not be honored.

Cancellation Policy

If you need to cancel or modify your order, please contact us as soon as possible. We strive to ship your order quickly, and once processing begins, cancellations may be subject to a restocking fee. Orders canceled within 24 hours of purchase may not incur a fee, but after that time, restocking fees (typically 20%) will apply depending on the items and the stage of fulfillment.

Return Policy

Customer satisfaction is our priority, and we are happy to assist with returns. However, due to the complexity of sourcing and delivering our products, returns are subject to a restocking fee (usually 20%) based on the item and manufacturer.

Before returning any items, please get in touch with us to receive a return authorization. All return requests must be made within 30 days of receiving your merchandise. Once approved, items must be returned within 14 days in their original condition. Improper packaging of returned items may result in customer responsibility for damages.

Customers are responsible for return shipping costs, unless the item is defective or we shipped the wrong item. A trackable shipping method is strongly recommended.

Warranty

We honor all manufacturer warranties and are here to support you in getting the quality products you deserve. However, please note that warranty claims are available to the original purchaser only. In certain situations, manufacturers may handle warranty claims directly, and we are unable to cover costs not specified in the manufacturer's warranty (e.g., shipping, labor). If you have any questions, feel free to reach out to us.

Emissions Notes

All parts and services offered by LunaticsCo are for competition vehicles only. Use on state and federal highways may be a violation of the EPA Clean Air Act. The Clean Air Act can be found at http://www.epa.gov/air/caa/. This document details what are considered violations of the CAA and the corresponding penalties for failure to comply. It should be read in full before purchasing or installing this competition-use-only product. Ensuring that all emissions, noise/sound, and speed/use-related laws are followed is the responsibility of the buyer(s). Installation and use of this product indicate that this disclaimer has been read, acknowledged, and fully understood by both the buyer(s) and installer(s). The buyer(s) assume all associated risks of purchase.

Federal and several state laws prohibit the removal, modification, or rendering inoperative of any part that affects emissions or safety on motor vehicles used on public streets or highways. LunaticsCo assumes no liability for any violations arising out of any federal, state, or provincial emissions or safety requirements on motor vehicles resulting from the customer’s modifications and/or use of LunaticsCo products. It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws.