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Australian owned premium performance parts and services - Buy any 2 items and get 5% off - Worldwide shipping available Call +61 461 324 537 sales@boostedengineering.com.au
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BMW G05 X5 / G06 X6 40i Valved Cat-Back Exhaust (B58) – Boosted Engineering
Boosted Engineering

BMW G05 X5 / G06 X6 40i Valved Cat-Back Exhaust (B58) – Boosted Engineering

$2,599.99 AUD · Insured freight · Usually dispatched within 5–14 business days
Model: X5 xDrive40i (G05)
Not sure it fits your car? Call +61 461 324 537

Give your B58-powered G05 X5 and G06 X6 xDrive40i the sound it should have come with. The Boosted Engineering Valved Cat-Back Exhaust replaces the restrictive factory system with free-flowing 304 stainless steel pipework and electronically controlled valves, so you get a deeper, more aggressive straight-six sound when you want it and a quiet cruise when you don't.

Close the valves for a refined, drone-free drive on the highway. Open them for a louder, motorsport-inspired tone with more pops and crackles on a tuned car. Less backpressure also helps throttle response and pairs perfectly with our downpipes and a tune.

Every system is TIG welded from 304 stainless steel with mandrel-bent pipework and is designed as a direct bolt-on replacement using the factory mounting points.

Key Features:
• Electronic valves for quiet or loud modes at the push of a button
• Free-flowing design that reduces backpressure
• A deeper, more aggressive straight-six sound with the valves open
• 304 stainless steel, TIG welded, mandrel bent
• Bolt-on fitment using factory hangers
• Pairs with Boosted Engineering downpipes for a full turbo-back setup

Fitment:
• BMW G05 X5 xDrive40i (2019+)
• BMW G06 X6 xDrive40i (2019+)
(B58 petrol models only)

Important Information:
• Professional installation recommended
• Tip finish may vary slightly from photos
• Off-road / motorsport use only (check local regulations)

Real-World Tested · Developed On Street And Track
12 Month Warranty · Insured Freight, Worldwide Shipping
Expert Support · Fitment Advice Before You Buy
Shipping (Australia & international)
Most parts are dispatched within 5–14 business days. We'll email you a confirmed dispatch date within 24 hours of ordering. Australia: flat rate shipping, shown at checkout before you pay. General and BMW parts from $22.99, cat-back exhausts $99, turbo kits $210, transmissions from $334 and engines from $366. New Zealand: small parts $49, mid-size parts $99, cat-back exhausts $179 and engine short blocks $399. International (DHL, tracked): general parts $150, BMW parts $149.99 to North America and $249.99 elsewhere, turbochargers $275 to the US, Canada and China and $470 elsewhere. Turbo kits, engines and transmissions going overseas are quoted after you order. Import duties and taxes are paid by the buyer. Want an exact price first? Use the quote request below.
Not sure it fits your car?
Send us your vehicle and chassis code before you buy and we will confirm fitment. Email sales@boostedengineering.com.au or use the contact page.
Returns
Changed your mind? You have 30 days to return a part for store credit or to swap it for another item. Parts must be unused, uninstalled and in their original packaging, and the return must be approved by us first. Installed or used parts cannot be returned for change of mind. Your store credit balance is shown when you log in to your account, and you can use it at checkout. Faulty or damaged items are covered by our warranty and your rights under Australian Consumer Law. Report shipping damage within 48 hours of delivery.
Warranty
12 month warranty on Boosted Engineering products. If something is wrong with your part, contact us and we will look after you.
Save 5% Buy 2 items, get 5% off the cheaper one. Applied automatically at checkout.

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What our customers say

Real feedback from real builds
Boosted Engineering’s turbo kits are next level! The craftsmanship, design and attention to detail are outstanding. From the quality of the welds to the overall fit and finish, everything is exceptionally well engineered. Easily some of the best turbo kits on the market!
Oliver
Best place for getting your ride tuned. Very helpful and professional will be going back after doing some upgrades down the track
Tim
I’m so thankful for the quality work performed on my M2, Ben’s workmanship has been like no other. If you need a turbo kit Boosted Engineering has you covered!
Nick · BMW M2

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