Free Shipping On Orders Over $75. Details

Talk to a Silverado 1500 Enthusiast
M-F 9A-11P, Sat-Sun 9A-9P
Win $6,000! Enter Daily >

Granatelli Motor Sports Electronic Exhaust Cutout System; 4-Inch (Universal; Some Adaptation May Be Required)

Item S102275
Call a Silverado Enthusiast at 1-888-706-1096
M-F 9A-11P, Sat-Sun 9A-9P
Market Price $324.99 You Save 13% ($43.18)
Starting At


FREE Shipping

Select Option

Single Pair
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Choose options to add to cart.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 4" Electronic Exhaust Cutout
      • Aircraft Quality 6061 Aluminum
      • Polished Stainless Steel Turndowns
      • "Smart Chip" Controlled Motors
      • One-Touch Operation
      • V-Band Clamps
      • Stainless Steel Butterfly clamps
      • Weld-On Installation
      • Sold Individually Or As A Pair
      • Fits 1999-2021 Silverado 1500's


      Raw Exhaust Tone. Open up your Silverado's exhaust with the Granatelli Motor Sports 4.0" Electronic Exhaust Cutouts. With the touch of a button, you can open up a cutout valve that will turn-up the volume on your truck's exhaust. The raw and intimidating exhaust note can be silenced just as easily as it can be summoned and will free up a few extra horsepower.

      Aluminum and Stainless Steel. The GMS 4.0" Electronic Exhaust Cutout System is constructed from aircraft grade CNC machined 6061 aluminum that is incredibly lightweight, yet strong and durable. The cutouts use stainless steel butterfly plates and blade shafts for a precise fit and reliable performance. Completed with polished stainless steel turndowns, high torque DC gear reduction driven motors provide consistent operation every single time.

      Bolt-On Installation. The GMS 4.0" Electronic Exhaust Cutout System offers a fairly straightforward installation that requires the use of basic hand tools. All of the necessary hardware is included with the cutout, giving you a hassle-free install.
      Application. GMS 4" Electronic Exhaust Cutouts fit 1999-2021 Chevrolet Silverado 1500's.

      Shop All Truck Parts And Accessories

      Shop All Truck Exhaust

      Shop All Truck Exhaust Accessories


      Granatelli Motor Sports 307540


      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Cutouts
      • (4) Gaskets
      • (2) V-Band Clamps
      • (2) Polished Stainless Steel Turndowns
      • (2) Wiring Harnesses
      • (6) Bolts and Washers
      • (2) Flanges
      • (2) Motors

      Customer Reviews (12)

        Questions & Answers

        10 More Questions