51 inch cap cross bars, sold as a pair — the narrowest of the three lengths.

Cross bars for a truck cap, sold as a pair. They are what let you carry a roof top tent, an awning, a shower tent, cargo boxes, kayaks or skis on top of the cap rather than in the bed.

Suits the smaller caps, generally on mid-size trucks.

Measure before ordering. The three lengths are not interchangeable and the right one depends on your cap. We also list a separate set of Expedition cap cross bars at a lower price — if you are unsure which suits your cap, send us the cap model and we will confirm which set you need.