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
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
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
Lightweight axle-back featuring an exotic exhaust note. Designed for minimal drone at driving speed and maximum volume when desired.
10X Entries For Our 25th Anniversary Sweepstakes!
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
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
