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! ➡

Fmf Racing 042410 Q4 HEX Full System - Stainless Muffler - Aluminum End Cap

SKU: 8740406

Fmf Racing 042410 Q4 HEX Full System - Stainless Muffler - Aluminum End Cap

FMF Racing
$449.99
$449.99
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.
Incorporates internal baffles, chambers and space age soundabsorbing materials to accelerate exhaust flow with less noise and minimal power loss. Well under the 96db sound output on most machines to satisfy strict sound requirements. U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen. Q4 Hex Exhaust is only available for current models listed.

Vehicle Fitment:

2025 Kawasaki KX250
2025 Kawasaki KX250X
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