Can-Am Defender HD11 & Defender MAX HD11 Atlas Pro 1.5" Forward Offset A-Arms, 1.5" x 1/4" Wall Tubing, High Clearance, Up to 34" Tires, Adjustable Camber, Optional Ball Joints

If you want bigger tires on your Defender HD11 without lifting it, start here. These Atlas Pro front A-arms move the front wheels forward 1.5", making room for up to 34" tires and stretching the wheelbase for better stability, with high-clearance bends that lift the arms away from rocks and ruts.

Highlights

• 1.5" forward offset
• Up to 34" tires without a lift
• High-clearance design
• 1.5" diameter tubing with 1/4" walls on the structural tubes
• In endurance testing, outlasted OEM arms by more than 2 to 1
• Adjustable pivot blocks, preset to factory camber
• Preinstalled OEM-style bushings
• UV-resistant powder coat
• Optional preinstalled ball joints
• Lifetime warranty

Twice the Durability of Stock

Heavy 1.5" tubing with 1/4"-thick walls on the structural tubes gives these arms far more strength than the factory parts. In endurance testing they lasted more than twice as long as OEM A-arms.

Clearance, Offset and Stability

High-clearance bends keep the arms above rocks, roots and ruts. The 1.5" forward offset opens room for 34" tires and lengthens the wheelbase, so the HD11 feels more stable at speed and on climbs.

Dial In Camber

The pivot blocks come set to factory specs. If you add weight, accessories or a lift, adjust camber to keep tire wear even.

Choose Your Ball Joints

Use the "Need Preinstalled Ball Joints?" picker to have ball joints installed before shipping, or reuse your stock ball joints: - Standard Duty: hardened chromoly studs and housings, zinc plated; as strong as or stronger than stock - Heavy-Duty 4340 Chromoly Steel: 4340 VAR steel, zinc plated, adjustable, with grease zerks; withstands about double the load of OEM - Super Duty 300M: 300M steel, adjustable steel-on-steel design and grease zerk; 2.25 times stronger than stock - Keller Performance: two-piece threaded design with no snap ring, chromoly stud and tool-steel body; greaseable and rebuildable; requires 15" or larger wheels - Reuse existing: you must reuse your stock ball joints if you don't select one

Offset Arms vs. a Lift

A lift raises the whole machine. Forward offset arms make room for bigger tires by moving the wheels forward, keeping the center of gravity low for stability with heavy loads and on side hills.

Planning Your Build

• Upgrade axles if you're running 34" tires or working the machine hard
• Choose Keller ball joints only with 15" or larger wheels
• Get an alignment after installation

Care Tips

• Grease the ball joints at every service if they have zerks
• Check pivot bolt torque after the first few rides
• Inspect bushings for wear once a season

Who It's For and What Pairs Well

For HD11 and MAX HD11 owners who want bigger tires and more clearance without a lift. Browse more arms in Defender A-arms, stronger axles from Defender axles and CVs, tie rods from Defender steering and more in Defender suspension.

FAQ

Do I need a lift for 34" tires?

No. The forward offset makes room for up to 34" tires.

Are bushings included? Yes, OEM-style bushings come preinstalled.

Do I need new ball joints? No. You can reuse your stock ball joints, or choose a preinstalled set.

What's the warranty? Lifetime on the A-arms.

What the Forward Offset Does on the Trail

Moving the front wheels forward does more than make room for big tires. A longer wheelbase makes the Defender less likely to pitch on steep climbs and descents, and it tracks straighter at speed. With bigger tires, the machine also rolls over obstacles more easily, and the high-clearance bends keep the arms from catching on rocks and logs in between.

Signs Your Stock Arms Are Holding You Back

• Your tires rub at full lock or full compression
• You've bent an A-arm on a rock or stump
• You want 32" to 34" tires without a lift
• The Defender feels tippy or nervous on side hills

Built for Work Machines

Defenders carry heavy loads, push snow and tow trailers. Those loads go straight through the front arms. The thick-wall tubing and heavy pivot blocks are built for that kind of repeated stress, not just weekend trail rides.

Will the steering feel different? Bigger tires add steering effort and load on the steering parts. Stronger tie rods are a smart addition if you go to 34" tires.

Can I use them with a lift? Yes. Use the adjustable pivot blocks to set camber for the lifted ride height.

Do they fit the MAX HD11? Yes. The MAX HD11 trims are listed in the fitment table below.

Choosing a Tire Size

- Stock to 30": no clearance concerns; the arms add strength and ground clearance - 32": a popular all-around size for work and trail - 34": the maximum for these arms without a lift; consider stronger axles and tie rods Wheel offset affects clearance too, so confirm your wheel and tire combination before ordering.

Why Atlas Pro

Atlas Pro is the heavy-duty arm line, made for big tires, heavy loads and hard use. If your Defender works for a living, the thicker walls and heavier tubing are worth it.

Fitment

Note: 15” wheel or larger is required to run Keller Ball Joints

Installation Notes

Support the front of the machine, remove the wheels and factory A-arms, and install the new arms with bushings and any preinstalled ball joints. Torque the pivot bolts at ride height, set camber if needed and get an alignment.

• Installation instructions (AA-CA-HD11-OHC, PDF)