Can-Am Defender HD11 & Defender MAX HD11 SDi Terrain Master 2.1 Shocks, Piggyback Reservoir, Adjustable Compression, Billet Pistons, Rebuildable

Stock Defender HD11 shocks are fine for light work, but add bigger tires, heavy loads or rough trails and they start to fade, wallow and bottom out. SDi Terrain Master 2.1 shocks bring controlled, consistent damping and adjustability, so the Defender stays planted whether you're crawling rocks or hauling a full bed across a pasture.

Highlights

• High-flow damping with piggyback reservoirs
• Large-bore compression adjuster
• Billet aluminum T6 pistons
• Quick-adjust preload ring
• All-aluminum, corrosion-resistant bodies
• Hardened chrome-coated shafts
• Lightweight barrel springs
• PTFE-lined bearings
• Fully rebuildable seal head

Consistent Damping

Shocks lose control when the oil gets hot. The piggyback reservoirs add oil capacity and keep heat in check, so the damping stays the same at the end of a long, rough ride as at the start.

Dial in the Ride

Turn the compression adjuster softer for a plush ride on rough ground, or firmer for heavy loads and more control. The quick-adjust preload ring sets ride height to match tire size and cargo.

Built to Last and Be Serviced

Aluminum bodies resist corrosion, chrome-coated shafts and PTFE-lined bearings reduce friction and wear, and the seal head is fully rebuildable, so you can service the shocks instead of replacing them.

Who It's For and What Pairs Well

For HD11 and MAX HD11 owners running bigger tires, heavier loads or rougher terrain. Pair with arms from Defender A-arms, a lift from Defender lift kits and more parts in Defender suspension.

FAQ

Are these adjustable?

Yes. Compression is adjustable, and preload is set with a quick-adjust ring.

Can they be rebuilt? Yes, the seal head is fully rebuildable.

Fitment

Installation Notes

Support the machine, remove the factory shocks and bolt in the new ones. Set preload and compression, then fine-tune after a test ride.

• Installation instructions (STM-MA-2623008-K, PDF)