New to Powersport Superstore? Try our Year-Make-Model search and find the right parts for your ride by clicking "My Garage" on the upper-right! ➡

Black

SKU: 8435838

Supertrapp 147-21820 4in. Stout Slip-On Muffler - Black

SuperTrapp
$661.75
$661.75 $968.95
Sale Sold out
/
Shipping calculated at checkout.
In stock and ready for shipping
This is a pre order item. We will ship it when it comes in stock.
Marketing Color: Black
Material: Aluminum

Massive 4in. non-tunable chrome or black ceramic bodies. Streamlined, internal tapered, billet aluminum end caps with recessed fasteners are preinstalled. Inlets flow better into OEM headpipe as well as SuperTrapp True Dual Headpipes. Provide a heavy, broad-spread power curve with horsepower and torque gains over stock mufflers. Minimally (2 dB) or (5 dB) louder than stock. Sold in pairs. Made in the U.S.A..

Vehicle Fitment:

2018 Indian Chief
2014-2018 Indian Chief Classic
2016-2020 Indian Chief Dark Horse
2014-2020 Indian Chief Vintage
2014-2021 Indian Chieftain
2018-2020 Indian Chieftain Classic
2017-2021 Indian Chieftain Dark Horse
2017-2018 Indian Chieftain Elite
2020-2021 Indian Chieftain Elite
2017-2021 Indian Chieftain Limited
Secure, Trusted, and Encrypted

Protected by industry-leading 256-bit SSL encryption and backed by Shopify’s PCI DSS–compliant infrastructure. Every page, click, and transaction is encrypted and monitored for threats — so you can shop with confidence knowing your data stays protected.

Parts for Every Machine

We stock aftermarket parts, gear and accessories for motorcycles, ATVs, UTVs, snowmobiles, personal watercraft, and even performance cars — all backed by expert support and live inventory.

Real-Time Fitment Accuracy

Search by Year, Make, and Model with confidence. Our proprietary vehicle fitment system ensures you’re only shown what fits — no guesswork, no returns — just parts that fit.

Fast, Trackable Shipping

We ship from over 20 U.S. warehouses — often same or next business day. Every order includes tracking and transparent fulfillment updates from start to finish, all processed through a secure, encrypted checkout.

Quick Links

Ride With Us. Stay Connected.

Follow us for real-time fitment updates, gear drops, and pro tips from the garage. No spam, just parts, tech, and news for riders like you.

Your Garage

Add a Vehicle