Front Runner Rivian R1T Load Bed Rack Mounting System & Slimline II Tray Assembly
Model Numbers: LASS045, RRSTUNI
READ ME!
Thank you for purchasing a Front Runner Rivian R1T Load Bed Rack Mounting System. Before you start, take a moment to familiarize yourself with the Fitting Instructions and the included components. Refer to Page 2 for a list of all the components, quantities and tools required.
IMPORTANT WARNING! ⚠️
It is critical that all Front Runner products be properly and securely assembled and attached to your vehicle. Improper attachment could result in an automobile accident, and could cause serious bodily injury or death. You are responsible for assembling and securing all Front Runner products to your vehicle, checking the attachments prior to use, and periodically inspecting the products for adjustment, wear and damage. Therefore, you must read and understand all of the instructions and precautions supplied with your Front Runner product prior to installation or use. If you do not understand all of the instructions and cautions, or if you have no mechanical experience and are not thoroughly familiar with the installation procedures, you should have the product installed by a professional installer or other qualified personnel.
NOTE: Front Runner will not be responsible for any damage caused by the failure to install the product according to these instructions. Please call us if you have any questions about the installation of this product.
Front Runner Rivian R1T Load Bed Rack Mounting System (LASS045)
1. Get Organized
In the Box:
- 1 X Left Hand Side Main Rail
- 1 X Right Hand Side Main Rail
- 1 X Left Hand Side Cover
- 1 X Right Hand Side Cover
- 4 X Steel Washer Plate
- 8 X 8mm Plastic Spacers
- 8 X M6 x 30 Button Head Screw
- 8 X M6 Nyloc Nut
- 4 X M8 V Bolt
- 32 X M8 Nyloc Nut
- 6 X Legs
- 12 X M8 x 25 Button Head Screw
- 24 X M8 Nut Cap
- 16 X M6 x 16 Button Head Screw
- 12 X M8 x 25 Hex Head Bolt
Tools Needed:
- 10mm Wrench
- 13mm Wrench
- 4mm Allen Wrench
- 5mm Allen Wrench
Diagram (Figure 1.1): An exploded view showing all components of the load bed rack system, labeled with corresponding numbers.
2. Fit and Secure
Step 2.1: Fit the Spacers (Item 6) and Washer Plate (Item 5) to the Main Rail (Item 1) using M6 x 30 Button Head Bolts (Item 7) and M6 Nyloc Nuts (Item 8). Fully tighten. Perform this on both front and rear fixing points on both left and right hand side rails. Tightening Torque: M6: 8-10Nm / 5.9-7.38 ft lb.
Step 2.2: Insert the M8 V Bolts (Item 9) around the four accessory ports on your load bed as shown.
Step 2.3: Place the Main Rail (Item 1) assembled in step 2.1 over the accessory ports on your load bed and insert the M8 V Bolt (Item 9) through the Main Rail as shown.
Step 2.1 (cont.): Thread the M8 Nyloc Nuts (Item 10) onto the M8 V Bolts and tighten equally, alternating between the two nuts. Check the alignment of the plastic spacers over the accessory ports and center before fully tightening. Perform this on both left and right hand sides. Tightening Torque: M8: 15-20Nm / 11.06-14.75 ft lb.
Step 2.2 (cont.): Assemble the Legs (Item 11) to the Main Rail (Item 1) using M8 x 25 Button Head Bolts (Item 12) and M8 Nyloc Nuts (Item 10) as shown. Fully tighten. Place M8 Nut Caps (Item 13) over all M8 Nuts used to assemble the Legs. Do this for all six Legs. Tightening Torque: M8: 15-20Nm / 11.06-14.75 ft lb.
Step 2.3 (cont.): Assemble the Cover (Item 3) over the Main Rail Assemblies using the M6 x 16 Button Head Screws (Item 14). Fully tighten. Perform this for both the left and right hand sides. Tightening Torque: M6: 8-10Nm / 5.9-7.38 ft lb.
Step 2.1 (cont.): Place the rack on the bed rack mounting system and assemble using M8 x 20 Hex Head Bolts (Item 15) and M8 Nyloc Nuts (Item 10). DO NOT FULLY TIGHTEN AS YOU NEED TO CENTER IT.
Step 2.2 (cont.): Center the Rack from Left to Right and tighten the legs in a cross sequence to prevent the rack from moving. Fully tighten all fasteners and finish off the Nyloc nuts with M8 Nut Caps (Item 13). Tightening Torque: M8: 15-20Nm / 11.06-14.75 ft lb.
3. Finish
Congratulations! You did it. Take a step back and admire your work! ✔️
4. Install Other Vehicle and Rack Accessories
Now's the time to visit your favorite Front Runner Dealer in person or online.
Be sure to tag us. We love to see our gear in action! #FrontRunnerOutfitters #BornToRoam
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Front Runner Slimline II Tray Universal Assembly (RRSTUNI)
Note: The following instructions are for assembling the Slimline II Tray itself, which may be mounted on the Rivian R1T Load Bed Rack System.
1. Get Organized
Depending on which size Slimline II Tray you order, quantities may vary from those pictured.
In the Box (for RRSTUNI):
- 32 X M8 Nyloc Nut
- 4 X M8 x45 Button Head Bolt
- 2 X Thick Joiner Piece
- 2 X Thin Joiner Piece
- 4 X Side Profile
- 4 X Corner
- 2 X Combined Slat
- 28 X M8 x 25 Button Head Bolt
- 12 X Standard Slat
- 4 X M6 x 12 Button Head Bolt
Tools Needed:
- 4mm Allen Wrench
- 5mm Allen Wrench
Diagram (Figure 1.1): An exploded view of the Slimline II Tray components, labeled with numbers 1 through 10.
2. Rack Assembly - Side Profiles
NOTE: Skip this step if your Slimline II Tray is 1560mm or shorter; you will only have two Side Profiles and assembly is not required.
If you have received four lengths of Side Profile (Item 5), join them using the Joiner Pieces (Items 3 & 4) to form two lengths. The joints in the Side Profile will be diagonally opposite each other once the Tray is assembled (except for the 2772mm length).
Diagrams: Illustrate the T-slot channel, U-channel, joiner holes on Side Profiles, and the process of inserting joiner pieces and fastening with bolts and nuts.
Step 2.2: Insert a Thick Joiner (Item 3) into the U-Channel of a Side Profile. Take a Thin Joiner (Item 4) and Nyloc Nut (Item 1), slide them into the T-slot. Fasten loosely with an M8 x 45 Button Head Bolt (Item 2) and a 5mm Allen Wrench. Slide the matching Side Profile over the joiner pieces, insert a Nyloc Nut, and fasten again with an M8 x 45 Button Head Bolt. Repeat for the other side.
3. Rack Assembly - Combined Slats and Standard Slats
Step 3.1: Ensure Nyloc Nuts are in the end pockets of Combined Slats (Item 7) and Standard Slats (Item 9).
Step 3.2: Turn the Combined Slat (Item 7) upside down. Slide it into the Side Profile assembly and align holes. Loosely tighten with an M8 x 25 Button Head Bolt (Item 8) and 5mm Allen Wrench. Repeat for the second Combined Slat.
Step 3.3: Take a Standard Slat (Item 9), slide one end into the Side Profile assembly, ensuring the nut is at the bottom. Loosely fasten with an M8 x 25 Button Head Bolt (Item 8). Repeat for remaining Standard Slats, leaving an open hole in the Side Profile between each slat.
Take the other Side Profile Assembly and slide it over the ends of the slats, aligning holes and loosely inserting M8 x 25 Button Heads.
3.4. Squaring the Rack
Square the Side Profiles and Slats before fully tightening. Measure diagonally from corner to corner; measurements should be equal. Fully tighten all M8 x 25 Button Head Bolts. Recommended torque: 20 Nm or 15 ft lb.
4. Rack Assembly - Corners
Step 4.1: Flip the tray right side up. Push a Corner (Item 6) into position, aligning its hole with the Rivnut in the Combined Slat. Use an M6 x 12 Button Head Bolt (Item 10) and fasten the Corner. Note: If attaching accessories later, you may omit corners initially.
5. Rack Assembly - Wind Deflector
In the Box: Slimline II Tray, M8 Half Nut, Wind Deflector (1LH + 1RH), Schnorr Washer, M8 x 12 Button Head Bolt.
Tools Needed: 5mm Allen Wrench.
Diagram (Figure 1.2): Shows Wind Deflector components.
Note: Wind Deflector mounts to the underside of the front Combined Slat. If fitting legs/feet, slide the M8 bolt for them into the machined slots first.
Step 6.1: Ensure Slimline II Tray is upside down (check product sticker).
Step 6.2: Insert M8 bolts, Half Nuts, and Schnorr Washers (Items 2, 4, 5) into the Combined Slat, sliding them to the center, ensuring the Schnorr Washer is above the T-slot Channel.
Step 6.3: Assemble Items 2, 4, & 5 to both LH & RH Wind Deflectors (Item 3).
Step 6.4: Insert the assembled nut into the Wind Deflector's Combined Slat T-slot pocket and slide to the side. Repeat for the other half.
Step 6.5: Center the Wind Deflector and move bolt assemblies into the slots. Tighten with a 5mm Allen Wrench.
NOTE: After fitting to the vehicle, test drive. If wind noise is excessive, try moving the two Wind Deflectors slightly apart (20-30mm gap).
USEFULL TIP - PRE-LOAD TIE DOWN RINGS: It is useful to fit Tie-Down Rings (RRAC012) to your rack for future accessory mounting. Insert them into the center machined slots.
7. Check Your Vehicle Installation Guide
Once the Slimline II Tray is assembled, get your Rack Kit Installation Guide and follow the vehicle-specific instructions for fitting it to your vehicle.
8. How to Care for Your Front Runner Gear
Whether you prefer your gear dirty or clean, Front Runner gear is built to last. To maintain functionality, give your gear a bath occasionally.
Care Instructions:
- Rinse with clean water and wipe with a soft dry cloth.
- For stubborn spots, use a soft brush and mild soap.
- For extra care, use a wax or UV-inhibiting spray (ensure no abrasive compounds).
- In salty or snowy climates, apply silicone-based oil/spray to nuts and bolts to prevent corrosion.
WHETHER YOU LIKE TO ROLL DIRTY OR CLEAN, YOUR FRONT RUNNER GEAR WILL GIVE YOU MANY YEARS OF SERVICE!
9. Install Other Vehicle and Rack Accessories
Now is the time to visit your favorite Front Runner Dealer in person or online.
Be sure to tag us. We love to see our gear in action! #FrontRunnerOutfitters #BornToRoam
Share your adventures on: ▶️ ? ?️ ? ?
