RD-99 Engagement Collar
If you are after the ultimate in performance from your ARB RD-99 9" Air Locker you have come to the right place. With your help during our year long comprehensive testing process, we have perfected our own version of the RD-99 engagement collar that is absolutely GUARANTEED to outperform your factory ARB setup.
The Spidertrax Upgraded ARB RD-99 Engagement Collars are all in-house CNC machined from high grade, high strength 4340 chromoly steel. After machining, special care is taken into the proprietary heat treatment process that provides this engagement collar's superior strength and wear resistance. In addition to improvements in material and heat treatment, the shape of our engagement collars are also unique, further aiding in engagement and disengagement under your lockers normal operating loads.