18-Inch XL Adjustable Rig Half-Moon Deflectors for XL Big Green EGG

Enjoy two setups no other rack system offers — and still tackle everyday cooks with your XL Big Green EGG.

Unlock the full power of your CGS XL Adjustable Rig with these 18-Inch Half-Moon Heat Deflectors. Sized perfectly for inside the XL Rig, these ceramic deflectors create true indirect and two-zone setups for the XL Big Green EGG.

Max Versatility

Using the Deflectors on the XL Rig gives you two unique cooking capabilities not available with Competitors' rack systems.

What's Included

Under Select Deflector, pick:

• One Half Round - includes a single 18-inch half-moon deflector
• Two Half Rounds - includes a matched pair of 18-inch half-moon deflectors

Note: The true diameter is closer to 18-1/2 inches.

Enjoy Access to the Fire When BBQing

Build the entire setup on the XL Rig. No XL grid to get in the way.

Set a pair of 18-inch half-moon deflectors on the XL Rig's second lowest level. Setting the deflectors here opens direct access to the fire, allowing you to easily add smoking wood during the cook - without touching the setup or food.
Check out the video below — it’s our favorite BBQ setup in the XL EGG.

Go Upper-Level Indirect for Two Zone Grilling

Create an indirect zone in the dome using one 18″ half-moon deflector. It’s a fantastic way to get the indirect side up and out of the way, leaving your entire lower grid available for direct searing and grilling. 

You can setup on the XL grid or go higher in the dome atop the XL Woo.

Best Reverse Sear Setup

Our favorite setup pairs the XL Woo under the XL Adjustable Rig for the reverse sear method or gilling veggies with steaks/burgers. It really opens up access and delivers stable roasting temperatures over the half-moon grid.

Our searing grid preference: We prefer the Large Big Green EGG Cast Iron Grid on the Woo’s lower ring over a pair of XL half-moon grids on the fire ring. The Large grid provides nearly the same cooking area at about half the cost.

Pro Tip: You can easily remove the half-moon deflector during the cook - go between direct and indirect up top. We use a pair to tongs to grab it and have the glove hand gently hold it.

Required - XL Adjustable Rig Deflector Bracket

To complete the half-grid/deflector indirect setups, you need the Deflector Bracket. It holds the half-moon deflector right under the 20″ half grid.

The hanger installs easily — just hook the three legs onto the Rig's upper ring.

Easy Setup for Pizza

Use the 18s atop the XL Rig to push the pizza stone into the dome. The XL Rig can sit directly on the fire ring or be super-elevated using the XL Woo & Rig. Either the XL Rig or Woo can hold a blocking stone - enjoy excellent flexibility in spacing between deflector and pizza stone.

Natural Double Indirect

This entire setup builds on the XL Adjustable Rig.
Place a pair of 18″ Half-Moon Deflectors on each of the XL Rig's lower two levels.

Position an 18″ Drip Pan just below your 20″ round grid. The drip pan is up away from the deflectors keeping burnt-on drippings to a minimum.

To support everything securely, we recommend one XL Slide Guide and two pairs of XL Crossbars.

Pro Tip: For smaller meats (like ribs or chicken), set the XL Adjustable Rig atop the XL Woo. This raises your cooking grid high into the dome — perfect for crisping skin or finishing ribs with higher temperatures. Just make sure you stay clear of the dome thermometer.

Why Half-Moon Deflectors

Simply put, 18-Inch Half-Moons:

• Are easier to handle and position
• Weigh less than a full-round ConvEGGtor
• Match the circular diameter of the XL convEGGtor
• Offer more setup flexibility
• Are cheaper to replace if one breaks

Integrates with These Rack Systems

The 18-Inch Half-Moon Deflectors work perfectly with:

• CGS XL Adjustable Rig
• CGS XL Woo
• CGS XL Spider 2.0
• CGS XL Flexible 2nd Grid
• Big Green Egg XL EGGspander Basket
• XL Pizza Stone

Pro Tip: You can use the 18s across multiple CGS XL accessories. It's the perfect way to turn your existing gear into new, dynamic cooking setups.

Why Use a Stainless Drip Pan

Ceramic deflectors absorb moisture like a sponge. Trapped moisture can steam, stress the ceramic, and eventually lead to cracks. Using a drip pan helps:

• Keep fluids away from the deflector
• Reduce burnt-on drippings
• Keep your grill cleaner for faster start-ups

Ceramic Spacers

You can use ceramic spacers, but we recommend upgrading to another pair of XL Crossbars or the XL Slide Guide instead. Both of these will add far greater versatility than spacers alone.

What's Included

Under Select Deflector, pick:

• One Half Round - includes a single 18-inch half-moon deflector
• Two Half Rounds - includes a matched pair of 18-inch half-moon deflectors

Use & Care

• Heat gradually with the grill to prevent thermal shock
• Always use a drip pan during BBQ cooks
• Do not oil or place in dishwasher; scrape debris and gently burn off residue
• Natural smoke darkening is normal
• Avoid high-heat clean burns

Specs

• High-heat refractory ceramic construction
• True Diameter: ~18-1/2 inches
• Side Height: ~3/4-inch
• Weight (Pair): ~13.6 lbs.
• Deflectors will darken with use as they absorb smoke

Note: CGS Woo, Adjsutable Rig and Drip Pan shown for illustrative purposes.