Get the guides, first
Seasonal UK driving advice and a heads-up when new stock lands. No spam, unsubscribe any time.





Every order ships free with tracking. Dispatch is usually within 1–2 working days and delivery within 3–8 working days.
Email us your order number within 30 days of delivery and we send the return steps the same working day. Refunds within 5 working days of receipt.
Send your registration or make, model and year to britishgarage.co.uk@gmail.com and we check the listing details against it before you order.
Flowmaster Super 10 Series Muffler (2.50" center in / 2.50" center out) is a loud, race-inspired chambered muffler engineered to deliver an aggressive exhaust tone and improved flow for performance builds.
Built around Flowmaster’s Delta Flow internal chamber design, the Super 10 Series is intended for enthusiasts who prioritize raw sound and robust performance. Constructed from 409 stainless steel with full MIG welds and a compact case length, this muffler fits a wide variety of custom exhaust systems — from classic muscle cars and LS swaps to lifted trucks and off-road rigs. It emphasizes high exhaust velocity, reduced back pressure, and durability under repeated heat cycles and vibration.
The Super 10 Series is Flowmaster’s most aggressive chambered muffler, delivering a deep, raw, and highly audible exhaust note designed to announce the vehicle. Expect an authoritative bark at idle, strong mid-range growl under acceleration, and pronounced sound on full throttle without being a resonator-style whistle.
Flowmaster’s patented Delta Flow chambers help increase exhaust gas velocity and reduce restrictive back pressure, which can improve throttle response and support gains in horsepower and torque when matched with the right supporting mods. The muffler is crafted to balance sound and flow so it contributes to a free-breathing system rather than choking it.
Yes — the muffler is built from premium 409 stainless steel and fully MIG-welded to withstand heat, vibration, and rough driving conditions typical of performance and off-road use. Its short case length and common 2.50" center-in/center-out layout simplify installation into many custom and replacement exhaust systems.
The Super 10 Series suits drivers who want loud, race-inspired sound and robust flow characteristics rather than subtle tuning. It pairs especially well with muscle cars, swapped platforms (LS and other V8 conversions), lifted trucks, off-road machines, drag cars, and restomod projects where soundtrack and presence are priorities.
If you want an unmistakable, aggressive exhaust personality and a durable, compact muffler that supports power and throttle response, the Flowmaster Super 10 Series 2.50" center in/center out is designed for that purpose. It’s intended for experienced installers and vehicle owners who accept louder sound levels and seek a proven chambered design rather than quieter or electronically tuned solutions.
Q: Will this muffler fit my 2.5" exhaust pipes?
A: Yes. The Super 10 Series listed is 2.50" center in and center out, compatible with 2.5" pipes and common slip-fit clamps or weld installations.
Q: Does this muffler reduce back pressure for power gains?
A: Flowmaster’s Delta Flow chambering is designed to increase exhaust velocity and reduce back pressure, which can support improved throttle response and power.
Delivery: free tracked delivery to every UK postcode on every order. Most orders are dispatched within 1–2 working days and arrive within 3–8 working days; you receive a tracking link by email as soon as it ships.
Returns: 30 days from delivery to return any unused item in its original packaging. Email us with your order number and we send the return instructions the same working day. Refunds go back to your original payment method within 5 working days of the item arriving with us.
Faulty or wrong item? Tell us within 30 days and we replace or refund it, including the return postage.
Seasonal UK driving advice and a heads-up when new stock lands. No spam, unsubscribe any time.
Thanks for subscribing!
This email has been registered!