4BROS Kimber CDS9 RaceCar Appendix Rig – IWB Sidecar Holster & Magazine Carrier System The 4BROS Kimber CDS9 RaceCar Appendix Rig is a premium IWB (Inside Waistband) sidecar holster system designed specifically for the Kimber CDS9 Double Stack 1911. Featuring the innovative 4BROS RaceCar Injection-Molded Appendix Adapter Plate, adjustable sidecar spacing, and independent ride height and cant adjustments, this appendix carry system is engineered to maximize comfort, improve concealment, and provide exceptional adaptability for everyday carry. Unlike traditional fixed sidecar holsters, the RaceCar Appendix Rig utilizes a flexible connection system that allows the holster and magazine carrier to move naturally with the body. This articulated design helps reduce pressure points, improve comfort while seated, and enhance concealment during daily wear. Designed for Comfortable Appendix Carry The proprietary 4BROS RaceCar Injection-Molded Appendix Adapter Plate flexes with the natural contours of the body, helping minimize discomfort often associated with rigid sidecar holsters. This flexibility allows the system to maintain stability while improving comfort during movement, driving, sitting, and extended carry sessions. Key Features 4BROS RaceCar Injection-Molded Appendix Adapter Plate – Flexible, durable, and engineered to move naturally with the body while maintaining support and stability. Adjustable Sidecar Spacing – Customize the distance between the holster and magazine carrier to accommodate different body types and carry preferences. Independent Ride Height and Cant Adjustment – Fine-tune the position of both the holster and magazine carrier for optimal concealment and accessibility. ModWing Concealment Wing – Helps rotate the grip closer to the body to reduce printing under clothing. Discreet Carry Concepts 1 Series Overhooks – Provide a secure connection to the belt for dependable daily carry. Below-the-Beltline Bridge Design – Positions the connection point below the beltline to improve flexibility and reduce rigidity during movement and seated carry. Precision-Molded Fit – CAD-designed and vacuum-formed specifically for the Kimber CDS9 platform. Optics Ready Design – Compatible with most popular slide-mounted red dot optics used on the Kimber CDS9. Suppressor Height Sight Compatible – Accommodates most standard and suppressor-height iron sights. Made in the USA – Manufactured in Logansport, Indiana, using premium materials and precision manufacturing processes. Built for Everyday Concealed Carry The Kimber CDS9 combines modern capacity with the familiar ergonomics of the 1911 platform. The RaceCar Appendix Rig complements that design with a complete concealed carry solution that includes both a dedicated holster and magazine carrier. Adjustable positioning and flexible articulation help create a comfortable, concealable system that performs throughout the day. Precision Fitment for Kimber CDS9 Pistols Firearm Compatibility: Kimber CDS9 Double Stack 1911 Hand Orientation: Right-Hand or Left-Hand Magazine Carrier: Dedicated Kimber CDS9 magazine carrier with adjustable retention. Optics Compatibility: Compatible with most slide-mounted red dot optics commonly installed on the Kimber CDS9. Sight Compatibility: Compatible with most standard and suppressor-height iron sights. Customize Your Carry Setup Learn more about available attachment options in our Inside Waistband Belt Attachment Guide. Need help selecting a finish? Explore our Kydex Holster Color Guide. Looking for additional magazine carry options? Browse our Kimber CDS9 IWB Magazine Carrier and Kimber CDS9 OWB Magazine Carrier. View additional models in the 4BROS RaceCar Appendix Rig Collection. Maintenance After making final adjustments, apply a removable thread locker to all hardware screws to help maintain settings and prevent hardware from loosening during daily carry. Frequently Asked Questions What is the 4BROS Kimber CDS9 RaceCar Appendix Rig? The RaceCar Appendix Rig is a dedicated IWB sidecar holster and magazine carrier system designed specifically for the Kimber CDS9. It combines a holster and spare magazine carrier into a single concealed carry platform. What makes the RaceCar Appendix Rig different from traditional sidecar holsters? The RaceCar Appendix Rig uses a flexible injection-molded adapter plate that allows the system to move naturally with the body. This improves comfort, concealment, and mobility compared to fixed sidecar designs. Is the RaceCar Appendix Rig adjustable? Yes. The holster and magazine carrier both feature adjustable ride height and cant. The spacing between the components is also adjustable to help optimize comfort and concealment. Will this holster work with red dot optics? Yes. The holster profile is cut to clear most slide-mounted red dot optics commonly used on the Kimber CDS9. Can the magazine carrier retention be adjusted? Yes. The included Kimber CDS9 magazine carrier features adjustable retention, allowing you to customize retention strength to your preference. Is the RaceCar Appendix Rig comfortable for all-day carry? The flexible adapter plate, below-the-beltline bridge design, adjustable spacing, and independent adjustment features are all designed to improve comfort during daily carry, movement, driving, and seated positions. What if my Kimber CDS9 configuration is not listed? If you have questions about fitment or compatibility, contact the Four Brothers Holsters support team for assistance.
