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CBS monitors the acceleration
giving a period correct premium look and feel
Made from high-grade lightweight titanium
Alpha N has a reputation for pushing the boundaries of performance and style
Additional 90 hp on a stock vehicle
Storm Motorwerks SMG Gaiter Ring - BMW E46 M3 S-Class (W126) CBS monitors the accelerationIntroducing the Storm Motorwerks Billet SMG Gaiter Ring. Precision machined from Stainless Steel, this piece replaces the standard plastic ring found on the E46 M3 SMG. Design & Fit The SMG Ring was put onto our drawing board by fellow M3 owners wanting a matching item to our SMG Gearknobs. The brief was clear design a piece to look subtle, fit well and have an automotive performance feel to it. After a few design iterations and input from many E46 M3