Turner Preferred.

Turner Motorsport Valved Performance Exhaust - BMW F8x M3/M4 S55 (MUST CHOOSE TIP STYLE FROM MENU BELOW)

Our Valved Performance Exhaust System replaces the restrictive factory axle-back with a high-flowing, valved stainless steel muffler. The result is a deeper, more aggressive tone when you want it and a refined, livable sound when you don’t.

Each system starts with mandrel-bent dual 2.5" 304 stainless steel tubing. Mandrel bending keeps the pipe diameter consistent through every bend, which maximizes flow and keeps the system resistant to corrosion and heat for years of hard use. The high-flow muffler keeps the valved design, so you still get a quiet mode for cruising and a fully open note when you put your foot down. Unlike many aftermarket designs, both muffler exits are put to work for valved and muffled flow, so all four tips are active, and you get a full, balanced sound from every outlet.

Installation is a direct bolt-on. The axle-back connects to your stock mid-pipe using Accuseal slip-fit joints for a tight, leak-free seal, and it hangs from the factory exhaust hangers, so no cutting or modification is needed. The 2.5" muffler exits fit a wide range of tip options, and the system ships with TURNER-engraved 4" brushed stainless steel tips for a clean, OEM+ look.

T#: 637254 | Part#: 025181TMS11
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Starting at $1210.39
1210.39
SALE: $1210.39 (15% OFF)
WAS: $1423.99 on 11-07-2026

This product was last offered at the strikethrough price on
11-07-2026

This product is backed by our
Lifetime Replacement Program! Read more here
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Turner Motorsport Turner Motorsport Valved Performance Exhaust - BMW F8x M3/M4 S55 (MUST CHOOSE TIP STYLE FROM MENU BELOW) 025181TMS11
Turner Motorsport Valved Performance Exhaust System - F80 M3, F82 M4
Turner Motorsport - Corporate Logo
T#: 637252
|
Part#: 025181TMS02KT
Availability:
In Stock
Est. Ship Date:
on Nov 16, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
Sale - Save 15%
$1423.99

This product was last offered at the strikethrough price on
11-07-2026

$1210.39
Qty: 1
Turner Motorsport Turner Motorsport Valved Performance Exhaust - BMW F8x M3/M4 S55 (MUST CHOOSE TIP STYLE FROM MENU BELOW) 025181TMS11
Turner - 4" Brushed Aluminum Exhaust Tips - Set Of 4
Turner Motorsport - Corporate Logo
T#: 638537
|
Part#: 026374TMS02X4KT
Availability:
In Stock
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on Nov 16, 2026
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$179.17
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Turner Motorsport Turner Motorsport Valved Performance Exhaust - BMW F8x M3/M4 S55 (MUST CHOOSE TIP STYLE FROM MENU BELOW) 025181TMS11
Turner - 4.0" Mirror Chrome Exhaust Tips - Set Of 4
Turner Motorsport - Corporate Logo
T#: 638538
|
Part#: 026374TMS02X4KT1
Availability:
In Stock
Est. Ship Date:
on Nov 16, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
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$367.99

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$356.92
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Turner Motorsport Turner Motorsport Valved Performance Exhaust - BMW F8x M3/M4 S55 (MUST CHOOSE TIP STYLE FROM MENU BELOW) 025181TMS11
Turner - 4.0" Black Chrome Swivel Exhaust Tips - Set of 4
Turner Motorsport - Corporate Logo
T#: 39802155
|
Part#: 049478LA01-02KT1
Availability:
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Est. Ship Date:
on Nov 16, 2026
Lifetime Replacement
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Lifetime Replacement Program! Read more here
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$279.99

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Turner Motorsport Turner Motorsport Valved Performance Exhaust - BMW F8x M3/M4 S55 (MUST CHOOSE TIP STYLE FROM MENU BELOW) 025181TMS11
Bosch - Post Cat Bank 1 Oxygen Sensor (Priced Each) - F80, F82, M3, M4
Bosch - Corporate Logo
T#: 596889
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Part#: 11787848486
Availability:
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on Nov 16, 2026
$154.79
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Turner Motorsport Valved Performance Exhaust - BMW F8x M3/M4 S55 (MUST CHOOSE TIP STYLE FROM MENU BELOW)
$1210.39

Previous Revisions
  • 025181TMSKT

Cross Reference
  • 18302349921