Arguably THE BEST modification for your 135. No cutting necessary, Direct bolt-on for a complete transformation!
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Control your exhaust valves with the click of a button! Includes a standalone vacuum pump, wiring, vacuum hose, and controllers.
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Brand:
ES#:
4883843
Mfg#:
004788LA01
In Stock
ON SALE!
SAVE 10%
$100.99
This product was last offered at the strikethrough price on 06-13-2026
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.
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Lightweight cat-back featuring an exotic exhaust note. Designed for minimal drone at driving speed and maximum volume on demand!
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Unleash the power of your car by reducing the biggest restriction in your exhaust
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Brand:
ES#:
3034379
Mfg#:
500001005
In Stock
$899.00
This product was last offered at the strikethrough price on 04-20-2026
Setup up your exhaust system just the way you like it with this kit from Supersprint.
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Universal 4" exhaust tips with a 2.75" inlet
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Brand:
ES#:
4883965
Mfg#:
D663-0600-BOX
In Stock
10% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$95.99
This product was last offered at the strikethrough price on 07-01-2026
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
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Complete transformation for your 1 series. Direct bolt on muffler delete for a rowdy sound and a new and improved aggressive diffuser to compliment the exhaust.
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Brand:
ES#:
4876665
Mfg#:
039172EBKT
In Stock
ON SALE!
SAVE 37%
$947.97
This product was last offered at the strikethrough price on 05-05-2026
Lightweight cat-back featuring an exotic exhaust note AND an upgraded M-Sport Rear Diffuser. Transform the entire aesthetic and sound of your 1 series with this ECS upgrade package!
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4" Turbo to Downpipe Clamp for 4" Downpipes
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Motorsport pedigree. Superior quality. Excellent sound. Milltek Sport cat-back exhaust for enhanced performance.
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Brand:
ES#:
2827642
Mfg#:
SSXBM948
Ships in 3 Business Days
ON SALE!
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$1456.00
This product was last offered at the strikethrough price on 07-01-2026
Performance exhaust systems increase flows to improve throttle response and add power. Designed to reduce back pressure, our large selection of performance exhaust parts and performance exhaust systems is made from premium materials like stainless steel. Many are TIG welded and polished to make them as attractive as they are functional.
Lifetime Replacement
