2014-2018 Subaru Forester Roof Racks

What's the difference between Solid vs Click-In Crossbars?

SKU	Name		USD
8-00-8670-BK	EXR 'WEEKENDER-8670' Black Crossbars - (2) 40" Solid bars, 1.76" above Rails	New	473.7
8-00-8776-BK	EXR 'WEEKENDER-8776' Black Crossbars - (2) 51" Click-In bars, 1.76" above Rails	New	628.7
8-00-8776-RD	EXR 'WEEKENDER-8776' Red Crossbars - (2) 51" Click-In bars, 1.76" above Rails	New	713.8
8-00-5671-BK	EXR 'CAMPER-5671' Black Crossbars - (3) 40" Solid bars, 1.76" above Rails	New	830.18
8-00-5777-BK	EXR 'CAMPER-5777' Black Crossbars - (3) 51" Click-In bars, 1.76" above Rails	New	972.56
8-00-5777-RD	EXR 'CAMPER-5777' Red Crossbars - (3) 51" Click-In bars, 1.76" above Rails	New	1106.6