1. Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of your OMAC Roof Rack Side Rails, specifically designed for the Mazda CX5 (2018-2023). Please read these instructions carefully before beginning installation to ensure correct fitment and safe use of the product.

Image 1: OMAC Roof Rack Side Rails (Silver)
2. Safety Information
- Maximum Load Capacity: The maximum load capacity for these roof rack side rails is 75 kg (approximately 165 pounds). Do not exceed this weight limit.
- Weight Distribution: Distribute cargo evenly across the roof rack. Secure all items properly to prevent shifting during transit.
- Regular Checks: Periodically check all fasteners and mounting points to ensure they remain tight and secure, especially after driving on rough roads or at high speeds.
- Vehicle Clearance: Be aware of the increased height of your vehicle with the roof rack and any loaded cargo, especially when entering garages, car washes, or low-clearance areas.
- Driving Habits: Adjust your driving speed and style when carrying cargo on the roof rack. Increased wind resistance and a higher center of gravity can affect vehicle handling.
- Professional Installation: If you are unsure about any step of the installation process, it is recommended to seek professional assistance.
3. Package Contents
Before beginning installation, verify that all components listed below and shown in the parts diagram are present and undamaged.
- 2 x Roof Rack Side Rails (Left and Right)
- 4 x Front End Caps (Part A)
- 4 x Rear End Caps (Part B)
- 4 x Rubber Gaskets (Part C)
- 4 x Mounting Brackets (Part D)
- 4 x Mounting Plates (Part E)
- 8 x M6x30 Screws (Part F)
- 8 x M6 Washers (Part G)
- 8 x M6 Nuts (Part H)
- 4 x Rubber Spacers (Part I)
- 4 x Plastic Plugs (Part J)
- 1 x Allen Key (Part K)
- 1 x Drill Bit (Part L)
- 4 x End Cap Covers (Part M)

Image 2: Detailed Parts List and Tools Required for Installation
4. Installation Instructions
Follow these steps carefully for proper installation. Ensure your vehicle is parked on a level surface and the engine is off.
- Prepare the Vehicle: Carefully remove any existing roof trim, wicks, or caps from the vehicle's roof where the rails will be mounted.
- Identify Rail Orientation: Determine the correct orientation for each roof rail. The front end of the rail is typically more aerodynamic or shaped to fit the front of the vehicle. Ensure the 'M' part (end cap cover) is correctly oriented as indicated in the diagram (M = RIGHT).
- Mark Drilling Points:
- Measure 24.5 cm from the front edge of the roof towards the rear and mark the first drilling point.
- From this first mark, measure an additional 170.7 cm towards the rear and mark the second drilling point.
Note: These measurements are critical for proper fitment. Double-check all measurements before drilling.
- Drill Holes: Using the provided drill bit (Part L) or an appropriate drill bit for your vehicle's roof material, carefully drill holes at the marked points. Ensure you do not damage any internal wiring or components.
- Install Rubber Seals and Mounting Hardware: Place the rubber gaskets (Part C) over the drilled holes. Position the mounting brackets (Part D) and mounting plates (Part E) over the gaskets, aligning them with the holes.
- Secure Rails: Place the roof rack side rails onto the mounting hardware. Insert the M6x30 screws (Part F) through the rails, mounting plates, brackets, and into the vehicle's roof. Secure them from underneath with M6 washers (Part G) and M6 nuts (Part H). Tighten all screws firmly using the provided Allen key (Part K), but do not overtighten.
- Attach End Cap Covers: Once the roof rails are securely fastened, attach the end cap covers (Part M) to the ends of the rails. These covers provide a finished look and protect the mounting hardware.

Image 3: Visual Guide for Roof Rack Installation Steps and Measurements

Image 4: OMAC Roof Rack Side Rails installed on a vehicle, side view

Image 5: Close-up of the front section of an installed roof rail
5. Operating Instructions
Once installed, your OMAC Roof Rack Side Rails provide a versatile platform for carrying additional cargo. Observe the following guidelines for safe operation:
- Load Securement: Always use appropriate tie-downs, straps, or cargo nets to securely fasten all items to the roof rack. Ensure there is no movement of cargo during transit.
- Weight Limit: Adhere strictly to the 75 kg (165 lbs) maximum load capacity. Overloading can damage the roof rack, your vehicle, and create a safety hazard.
- Aerodynamics: For optimal fuel efficiency and reduced wind noise, remove the roof rack when not in use, or remove any accessories (e.g., cargo boxes, bike carriers) when empty.
- Crossbar Compatibility: These side rails are designed to accept compatible crossbars (sold separately) for mounting various roof rack accessories. Ensure any crossbars or accessories used are compatible with the OMAC side rails and your vehicle's load capacity.
6. Maintenance
Regular maintenance will prolong the life and ensure the safe operation of your roof rack side rails.
- Cleaning: Clean the roof rack regularly with mild soap and water. Avoid abrasive cleaners or solvents that could damage the finish.
- Fastener Checks: Periodically inspect all mounting bolts, nuts, and screws for tightness. Re-tighten as necessary, especially after the first few uses and before long trips.
- Damage Inspection: Inspect the rails for any signs of damage, corrosion, or wear. If any damage is found, discontinue use and contact OMAC support for replacement parts or advice.
- Rubber Components: Check rubber gaskets and seals for cracks or deterioration. Replace if necessary to maintain water resistance and proper fit.
7. Troubleshooting
- Excessive Wind Noise: If you experience unusual wind noise, ensure all components are securely fastened. Check for any gaps or misalignments. Removing the rack when not in use can also reduce noise.
- Loose Rails: If the rails feel loose, immediately check and re-tighten all mounting bolts and nuts. Do not operate the vehicle with loose roof rails.
- Water Leaks: If water leaks into the vehicle after installation, verify that the rubber gaskets are correctly seated and undamaged, and that all mounting points are properly sealed.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | OMAC |
| Model Number | G000259 |
| Manufacturer Part Number | AMZ4625933 |
| Compatible Vehicle | Mazda CX5 (2018-2023) |
| Material | High-quality Aluminum |
| Color | Silver |
| Maximum Load Capacity | 75 kg (165 lbs) |
| Item Weight | 8.8 pounds |
| Product Dimensions (L x W x H) | 47 x 3 x 7 inches (approximate, for individual rail) |
9. Warranty and Support
For warranty information, technical support, or to inquire about replacement parts, please contact OMAC USA directly through their official website or the retailer where the product was purchased. Keep your purchase receipt as proof of purchase.
Manufacturer: OMAC USA





