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  • MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
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Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
Load image into Gallery viewer, MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
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MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113

Exhaust, Mufflers & Tips Muffler
Magnaflow
mag18113
Special order
August 1, 2026
$50.00
The MagnaFlow 3.5in. Round Glasspack Performance Exhaust Muffler 18113 enhances your ride with the deep, classic sound that glasspack mufflers are known for. The round muffler body features a free-flowing reversible straight-through 1.75/1.75in. diameter configuration and single stage packing with a satin finish. This weight-optimized glasspack muffler is engineered to bring out the inner hot rod in your ride with plenty of volume and dyno-proven performance, so please check to ensure compliance with local noise regulations. 18113 offers flexibility when it comes to installation thanks to its universal design, however, professional installation is recommended. Muffler 18113 is made of corrosion resistant aluminized steel and produced using CNC precision robotic manufacturing techniques, all backed by MagnaFlow's 90-day limited construction warranty. Need further assistance? Call 1-800-990-0905. Features & Benefits Straight-Through Performance Design Anti-Corrosive Aluminized Body Dyno Proven Downloads & ResourcesVideo File (MP4)
MagnaFlow Muff GP 3.5in Dia 16in Overall Length 1.75in Inlet / 1.75in Outlet - 18113
SKU: mag18113
Product Details

Everything You Need To Know

Review product information, shipping and returns, and price-match details before you order.

Product Info

The MagnaFlow 3.5in. Round Glasspack Performance Exhaust Muffler 18113 enhances your ride with the deep, classic sound that glasspack mufflers are known for. The round muffler body features a free-flowing reversible straight-through 1.75/1.75in. diameter configuration and single stage packing with a satin finish. This weight-optimized glasspack muffler is engineered to bring out the inner hot rod in your ride with plenty of volume and dyno-proven performance, so please check to ensure compliance with local noise regulations. 18113 offers flexibility when it comes to installation thanks to its universal design, however, professional installation is recommended. Muffler 18113 is made of corrosion resistant aluminized steel and produced using CNC precision robotic manufacturing techniques, all backed by MagnaFlow's 90-day limited construction warranty.

Need further assistance? Call 1-800-990-0905.

Features & Benefits

  • Straight-Through Performance Design
  • Anti-Corrosive Aluminized Body
  • Dyno Proven

Downloads & Resources

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Shipping on new purchases

In Stock Items:
In stock items typically ship within 1-3 business days. Most items arrive within 2 business days, but there are situations where it may take up to 5 business days.

Special Order Items:
Special order and out of stock items are product-specific and lead times can vary. Please e-mail us if you are looking for an ETA / Lead Time on a specific product. Special order orders are subject to cancellation if the vendor cannot provide any ETA.

Returns Policy

To start the return process, please e-mail sales@allianceracing.com

Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Shipping

To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

Depending on your location, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $100, you should consider using a trackable shipping service and/or purchasing Shipping Insurance.

To initiate a price match, please e-mail sales@allianceracing.com with the product information (SKU, URL, & Part Name) and a link to the competitors product page for us to validate the price match eligibility.

Please note that there are cases when we cannot offer a price match, but we will do everything in our power to try to match it. Some manufacturers have Pricing Policies that we have to adhere to.

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