The 2″ Chevy / GMC Cutaway Cab Back Closeout from Blackhawk Fiberwerx is engineered for durability, proper fitment, and flexibility in commercial, RV, and specialty vehicle builds. Constructed from high-quality fiberglass, this cab back closeout provides a compact rear cab enclosure designed for GM cutaway and medium-duty chassis applications.
Standard Configuration
2″ depth cab back closeout design
Designed to fit Chevy Express and GMC Savana cutaway chassis (1997 and newer)
Fits GMC TopKick and Chevrolet Kodiak chassis
Can be trimmed oversize to fit additional cutaway applications
Fiberglass exterior ready for paint or finishing
Window Option
Designed to accept a rear window from a 2003–2009 GMC TopKick or Chevrolet Kodiak
Window glass and seal not included (sold separately)
Interior Finish Options
Standard Interior (Unfinished)
Supplied with an unfinished fiberglass interior. May be left as-is or finished by the builder to suit their specific application.
Gel Coat Interior (Optional)
Finished gel coat surface for a cleaner appearance and easier maintenance.
Carpeted Interior (Optional)
Carpet-lined interior for improved sound reduction and thermal insulation.
(Interior finish options are available across all cab back closeout models.)
Installation
Note: All trucks may vary slightly. Minor adjustment during installation is normal.
Mock up the cab back closeout to the chassis using clamps and check fitment. Some play is normal and allows for adjustment during installation.
Mark mounting hole locations. Installation kit hardware uses 3/8″ bolts. Drill holes or use existing chassis holes as applicable.
For newer Ford chassis (2017 and up), U-clips or J-clips with matching screws can simplify installation.
Apply sealant to the chassis around drilled holes to prevent water or debris from entering the cab.
If the cab back closeout requires floor bracing (24″ depth and larger), determine brace locations. These can be adjusted later if needed.
Clamp the cab back closeout to the chassis, then install nuts, bolts, and fasteners. Tighten gradually, alternating from side to side, and adjust alignment as necessary.
Due to chassis variation, a small gap may exist where the floor meets the cab back closeout. This can be addressed using metal, treated wood, spray foam, rubber gasket material, or similar methods.
To seal the exterior seam, apply painter’s tape to both the cab back closeout and chassis sides near the seam. Apply sealant between the tape lines, then remove tape for a clean finish.
For cab back closeouts 24″ and larger: Attach the angled metal bracket to the floor and use the flat 4×4 attached to threaded rod to provide additional floor support.
Designed for installation by professional upfitters or experienced do-it-yourself builders
Optional installation kit available
Shipping & Ordering Information
Due to the size of this product, shipping is handled via LTL freight and must be quoted separately.
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To place an order or request a shipping quote, please contact us directly by phone or email and we will assist you with the ordering process.