How to Install End Caps and Bracket Caps on SimXPro Profiles
By SimXPro l Sim Racing Shop | Published: 2026-10-30
Category: How-to Guides
Learn to install SimXPro end caps and 4040 corner bracket caps cleanly. Step-by-step guide with common mistakes to avoid for a professional rig finish.
Quick answer
Install SimXPro end caps by pressing them firmly into the profile slot, and secure 4040 corner bracket caps over the bracket ends before final tightening. Use a rubber mallet for a snug fit and check alignment before locking down.
Why finish your profiles at all
Exposed aluminum profile ends and sharp bracket corners are more than a cosmetic issue. They can snag cables, scratch your floor, or catch your hand when you adjust the rig. Adding caps gives your cockpit a cleaner look and reduces those small annoyances.
SimXPro caps are made from black plastic, so they blend with most rig finishes. They are inexpensive, but they make a noticeable difference in how finished your setup feels.
Choosing the right cap size
End caps are available for different profile dimensions, including 40x40, 40x80, 40x120, and 40x160. You must match the cap to your profile's outer dimensions. A 40x40 cap will not fit a 40x80 profile, so measure your profile before ordering.
Corner bracket caps are designed for 4040 profiles and cover the exposed ends of corner brackets. They are a specific accessory, not a universal cap, so verify you have 4040 profiles before buying.
Installation steps
- Prepare the profile ends: Clean the profile ends with a dry cloth to remove dust or debris. Check that the slots are clear and the profile is cut square. A clean surface helps the cap seat fully. Debris left in the slot can prevent the cap from seating flat—check before pressing.
- Align the end cap: Hold the end cap so its tabs align with the profile's 8mm slots. Press it in by hand first to get the orientation right. Do not force it; if it does not start easily, rotate it 180 degrees. Wrong orientation is the most common mistake—always align tabs with slots before pressing.
- Seat the end cap firmly: Use a rubber mallet or the heel of your hand to tap the cap until it sits flush with the profile end. The cap should be level with the aluminum, not protruding. If it sticks out, tap it further or check for obstructions. A flush cap is the goal; a protruding cap means it is not fully seated.
- Attach corner bracket caps: For 4040 corner brackets, slide the bracket cap over the exposed bracket end before you fully tighten the bracket bolts. Position it so it covers the sharp edge completely, then tighten the bolts to secure everything. Install bracket caps before final tightening—otherwise you may need to loosen bolts to fit them.
- Final check: After all caps are installed, run your hand along the profile edges to feel for any sharp or protruding plastic. Tighten any loose caps by tapping them gently. Recheck after a few days of use, as vibration can loosen caps. A quick touch check catches loose caps before they fall off during use.
Product facts
- SimXPro 10x 4040 Corner Bracket Caps Black: SimXPro 10x 4040 Corner Bracket Caps Black are made for sim racing cockpit builds, providing clean mounting and practical fitment. These caps cover the sharp ends of your corner brackets, giving a tidy finish and reducing the risk of snags or scratches.
SimXPro 10x 4040 Corner Bracket Caps Black - SimXPro 10x end caps black: SimXPro 10x end caps black are a set of 10 pieces, made of black plastic, compatible with corresponding sized profiles with 8mm slots. A ten-pack lets you finish multiple profile ends in one go, and the 8mm slot compatibility ensures a secure fit on standard SimXPro profiles.
SimXPro 10x end caps black
