2.50" stainless steel with quad Cerakote black velvet oval tips. No physical or functional flaws with the system or missing components, simply open box
Fits models with factory rear sports differential
Comes complete with non-resonated downpipes, a precision-engineered x-pipe mid-section, and two valved muffler sections.
2X Entries Into Our F80 M3 Sweepstakes
2.50" stainless steel with quad GT-100 Cerakote black tips
Fits models without factory rear sports differential For vehicles without a sport differential
Brand:
ES#:
3240918
Mfg#:
SSXAU641
Ships on Nov 13, 2026
$3752.99
This product was last offered at the strikethrough price on 08-17-2026
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
Eliminates the problematic two-piece design and rubber isolator found in the stock crank pulley while reducing the mass of the motor's rotating assembly.
*To be used with 'Stage 2' software or software specific to a supercharger crank pulley upgrade*
Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.
Lifetime Replacement
