The Traxxas 9851 Complete TRX-4M Long Arm Lift Kit is a suspension lift kit that can raise the center ground clearance of a TRX-4M by over 35% when used with Mickey Thompson Baja Pro XS 2.4x1.0” tires. The kit includes revised shock mounts and longer suspension links to maintain proper suspension and steering geometry, and also comes with an extended trailer hitch.

Long arm kits can also increase ground clearance, which can help a vehicle clear obstacles when traversing rough terrain. This can make it easier to go rock crawling or tear through undergrowth without damaging any critical components on the vehicle's undercarriage.