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what size light bar for atv

Buying AdviceJordan SimmonsJun 28, 2026, 11:01 AM20 replies

I'm trying to figure out what size light bar to get for my 2019 Polaris Sportsman 570. I mostly ride trails at night and want something that throws a wide beam without blinding oncoming riders. I've seen 10-inch and 12-inch options but not sure if that's overkill or just right. Also worried about mounting without drilling into the plastic. Any advice on sizing and mounting setups that actually work for trail riding?

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Anthony BrooksJun 28, 2026, 11:01 AM

I run a 10-inch on my Grizzly 700 and it's plenty for tight trails. Anything bigger can block airflow and look goofy. Just make sure you get a combo beam so you have both spot and flood. Mounting on the front rack with a bracket works better than bumper mounts for me.

Gary PhillipsJun 28, 2026, 11:01 AM

12-inch is fine if you ride open fields, but for tight trails 10-inch is the sweet spot. I had a 14-inch once and it was too heavy for the mounts. Check the wattage too, some cheap bars draw more than your stator can handle.

Austin RussellJun 28, 2026, 11:01 AM

Don't forget about the wiring. I fried a switch because I didn't use a relay. A 10-inch with a 20-amp relay is safe. Also, look for IP69K rating if you ride through mud and water.

Benjamin ScottJun 28, 2026, 11:01 AM

I went with a 6-inch on my Rancher and it's actually enough for slow trail riding. Less weight up front and easier to aim. Bigger isn't always better, especially if you're just cruising.

Brian CookJun 28, 2026, 11:01 AM

Make sure you measure your mounting space first. My 10-inch fit fine on my Sportsman, but the 12-inch would have hit the fenders. Also, check the model year because plastic shapes changed in 2020.

Thomas GriffinJun 28, 2026, 11:01 AM

I disagree about the 10-inch being the max. I have a 12-inch on my Outlander and it works great for trail riding. The key is the beam pattern, not just the size. Get one with a wide flood pattern and you'll be fine.

Ryan EdwardsJun 28, 2026, 11:01 AM

If you're on a budget, don't go too cheap. I bought a $30 bar and it died after one wet ride. Spend at least $60-80 for something with decent seals. Also, get a harness with a fuse.

Jennifer CoxJun 28, 2026, 11:01 AM

I use a 10-inch curved bar on my Kingquad and it spreads light nicely. Curved bars tend to have a wider pattern than straight ones. Just make sure the mounting brackets are aluminum, not plastic.

Timothy WardJun 28, 2026, 11:01 AM

For trail riding, I'd suggest a 10-inch with a spot-flood combo. You can aim it slightly down to avoid blinding others. I also added a dimmer switch for oncoming traffic.

Derek ColeJun 28, 2026, 11:01 AM

I mounted a 12-inch on my Brute Force with a bracket that bolts to the frame. No drilling needed. But I had to upgrade my stator because the stock one couldn't handle the extra draw.

Ryan BennettJun 28, 2026, 11:01 AM

Check the lumens, not just inches. A 10-inch with 4000 lumens will outperform a 12-inch with 2000. I learned that the hard way. Also, look for CREE or similar quality LEDs.

Timothy KellyJun 28, 2026, 11:01 AM

I run a 9-inch on my Foreman and it's perfect. Fits between the racks without blocking anything. I used a wire loom and sealed connectors to prevent corrosion. No issues after two years.

Tom HarrisJun 28, 2026, 11:01 AM

You can always go with a pair of smaller lights instead of one big bar. I have two 6-inch bars on my Sportsman and the light coverage is better. Also easier to replace if one fails.

Kyle RussellJun 28, 2026, 11:01 AM

I tried a 12-inch and it caused too much glare off the hood. I swapped to a 10-inch and it's much better. Also, use a switch with a backlight so you know when it's on.

Patrick SandersJun 28, 2026, 11:01 AM

Make sure you get a bar with a proper lens. Some have plastic lenses that yellow in the sun. Glass or polycarbonate is better. I learned that after my first bar turned yellow in a year.

Michael WardJun 28, 2026, 11:01 AM

I mounted my 10-inch under the front rack using U-bolts. No drilling and it's solid. You can also use a universal light bracket from Amazon. Just make sure it's steel, not aluminum.

Edward CarterJun 28, 2026, 11:01 AM

If you ride in snow, get a bar with a defrost feature or keep a cloth handy. Snow sticks to the lens and kills the light. I have a 10-inch with a heated lens and it's worth the extra cost.

Luke SimmonsJun 28, 2026, 11:01 AM

I'd say go with 10-inch and save the money for a good wiring kit. Bad connections cause flickering and fires. Use marine-grade heat shrink and a proper relay. Safety first.

Adam BellJun 28, 2026, 11:01 AM

I have a 12-inch on my Grizzly and it's great for night trail riding. But I had to reinforce the mount because it vibrated at high speed. Use rubber washers to dampen vibration.

Dylan CooperJun 28, 2026, 11:01 AM

Before you buy, confirm your ATV's charging system output. Some smaller ATVs can only handle 10-15 amps total. A big light bar plus your headlights might overload it. Check the manual.

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