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What is the Ninja FlexFlame?
The FlexFlame is a propane-fueled outdoor cooking system from Ninja, a SharkNinja brand. In its February 25, 2025 announcement, SharkNinja positioned it as a way to use several cooking methods in one appliance rather than relying on a grill alone.
The company says its CyclonicHeat-iQ system combines convection airflow, propane flame control and Ninja Woodfire Technology. According to SharkNinja, a fan circulates hot air through the cooking cavity, while the control system adjusts the flames to maintain the selected temperature. The company also says two cups of pellets can add smoke flavor. These are descriptions from the manufacturer, not independently verified performance findings.
What can it cook?
Ninja advertises five cooking modes on the FlexFlame:
#1 Best Overall
- 5-IN-1 OUTDOOR COOKING SYSTEM: Grill, smoke, roast, griddle, and make perfect pizzas* *Accessories sold separately
- SUPER-HEATED CONTINUOUS AIR: High-velocity convection fan evenly circulates heated air and smoke throughout the grill cavity and around food, resulting in fast cooking, surround crisping and browning.
- PRECISION PROPANE FLAMES: Set and maintain an exact temperature with the digital control panel from 200°F to 600°F—no fiddling, premature flipping, or guesswork.
- MASTER GAS GRILL: Preheat up to 600°F in 7 minutes and achieve fast cooking with a surround sear.
- WOODFIRE BBQ SMOKER: With Ninja Woodfire Technology achieve authentic flavors, BBQ bark, and a smoke ring while smoking low-and-slow with just 2 cups of pellets
- Grill: Cook food over propane heat.
- Smoke: Add smoke flavor using pellets, according to Ninja.
- Roast: Cook with heat circulating inside the covered cooking cavity.
- Griddle: Prepare food on a flat cooking surface.
- Pizza: Make pizza using the system’s pizza-cooking setup.
The official product listing gives a temperature-control range of 200°F–600°F. That range describes the product’s stated controls; it does not establish how evenly or accurately the grill holds temperature in use.
What Ninja claims about heat-up and propane use
SharkNinja says the FlexFlame can preheat to 600°F in as little as seven minutes and uses up to 25% less propane. Both figures are manufacturer claims. The company announcement does not provide independent test results or a comparison method sufficient to verify them, so they should not be treated as guaranteed results in every setup or cooking condition.
Rank #2
- PRO-CONNECTIVITY: Monitor and adjust your temperatures from your phone and get notifications on your food status, exact temperatures, and doneness levels by syncing the FlexFlame with the Ninja ProConnect App.
- 5-IN-1 SMART COOKING SYSTEM: Grill, smoke, roast, griddle, and make perfect pizzas* *Accessories sold separately
- SUPER-HEATED CONTINUOUS AIR: High-velocity convection fan evenly circulates heated air and smoke throughout the grill cavity and around food, resulting in fast cooking, surround crisping and browning.
- PRECISION PROPANE FLAMES: Set and maintain an exact temperature with the digital control panel from 200°F to 600°F—no fiddling, premature flipping, or guesswork.
- MASTER GAS GRILL: Preheat up to 600°F in 7 minutes and achieve fast cooking with a surround sear.
What to know before setting it up
The SharkNinja product page states that a liquid propane tank and extension cord are not included. Check the official manual for the correct tank and connection requirements for the specific model before purchasing or connecting a tank.
Ninja’s product materials also identify Woodfire pellets and a FlexFlame cover as related items. Pizza accessories, including a peel, appear in related-product and bundle material, but bundle contents can differ. Confirm the listing for the exact model or bundle you intend to buy rather than assuming every accessory is included. The Ninja 5-in-1 bundle listing is one place to check its stated contents.
Rank #3
- 5-IN-1 OUTDOOR COOKING SYSTEM: Grill, smoke, roast, griddle, and make perfect pizzas* *Accessories sold separately
- SUPER-HEATED CONTINUOUS AIR: High-velocity convection fan evenly circulates heated air and smoke throughout the grill cavity and around food, resulting in fast cooking, surround crisping and browning.
- PRECISION PROPANE FLAMES: Set and maintain an exact temperature with the digital control panel from 200°F to 600°F—no fiddling, premature flipping, or guesswork.
- MASTER GAS GRILL: Preheat up to 600°F in 7 minutes and achieve fast cooking with a surround sear.
- WOODFIRE BBQ SMOKER: With Ninja Woodfire Technology achieve authentic flavors, BBQ bark, and a smoke ring while smoking low-and-slow with just 2 cups of pellets
What the launch announcement does—and does not—establish
The launch establishes Ninja’s intended proposition: five cooking methods in one propane-powered outdoor system, with the company’s airflow, flame-control and Woodfire technologies. It does not by itself show that the FlexFlame cooks better than a conventional grill, replaces separate appliances, or outperforms another multi-function cooker. Those judgments would require comparable measurements and testing, which the announcement does not provide.
Quick Recap
Best Value
- Perfect Fit - This Suphomeware grill cover Fits for Ninja FlexFlame PG300&PG301 Series Grills.
- Waterproof Material - Suphomeware grill cover is made of heavy duty 600D polyester fabric with waterproof PVC coating which provides a powerful guard against the bad weather like snow, rain and hail.
- Double Sided Stitching - Suphomeware grill cover uses a double-sided stitching technique to better prevent water seepage between the stitches and tear.
- Velcro Straps - Suphomeware design Velcro straps on both sides which ensures the cover will stay in place during the windy.
- Easy to Clean - Simply hose the grill cover with water to clean, and air dry it in the sun.
Rank #4
- 5-IN-1 OUTDOOR COOKING SYSTEM: Grill, smoke, roast, griddle, and make perfect pizzas* *Accessories sold separately
- SUPER-HEATED CONTINUOUS AIR: High-velocity convection fan evenly circulates heated air and smoke throughout the grill cavity and around food, resulting in fast cooking, surround crisping and browning.
- PRECISION PROPANE FLAMES: Set and maintain an exact temperature with the digital control panel from 200°F to 600°F—no fiddling, premature flipping, or guesswork.
- MASTER GAS GRILL: Preheat up to 600°F in 7 minutes and achieve fast cooking with a surround sear.
- WOODFIRE BBQ SMOKER: With Ninja Woodfire Technology achieve authentic flavors, BBQ bark, and a smoke ring while smoking low-and-slow with just 2 cups of pellets
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
