Product research

Roof Cargo Boxes sources

Specifications, manuals and independent publications used in these comparisons.

Source records

SportRack Horizon L SR7016 US ski allowance

SportRack, Manufacturer specification, Reviewed October 1, 2026

Exact SR7016 US page lists skis up to 178 cm. This corrects the earlier 180 cm catalog figure. It does not establish Amazon availability or a vehicle-specific installation fit.

Thule Force 3 L Sport US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

Freshly reviewed exact US model documentation. 11 cubic feet, 175 cm maximum ski length, 75.2 by 24.7 by 16.7 inches and 34 pounds empty. Values are manufacturer specifications.

Thule Force 3 XXL US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

Freshly reviewed exact US model documentation. 21 cubic feet, 215 cm maximum ski length, 91.4 by 35.2 by 17.9 inches and 57 pounds empty. Values are manufacturer specifications.

Yakima SkyBox NX LG specifications

Yakima, Manufacturer specification, Reviewed September 20, 2026

Freshly reviewed exact US model documentation. Exact SkyBox NX 16 LG identity, dimensions, compatibility and operating specifications used by the matcher.

Yakima SkyBox NX XL specifications

Yakima, Manufacturer specification, Reviewed September 20, 2026

Freshly reviewed exact US model documentation. Exact SkyBox NX 18 XL identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Force 3 M specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

Freshly reviewed exact US model documentation. Exact Force 3 M identity, dimensions, compatibility and operating specifications used by the matcher.

SkyBox NX installation and load calculation

Yakima, Manufacturer specification, Reviewed September 20, 2026

Includes box plus rack plus cargo load rule. Manual lists NX16 47lb and NX18 52lb, current product page lists NX18 53lb. Use conservative 53lb and recheck supplied unit.

Yakima cargo box hatch clearance chart

Yakima, Manufacturer specification, Reviewed September 20, 2026

NX LG requires 47in and NX XL 50in measured from front crossbar center to open hatch edge. Chart weight conflicts with product page by 1lb on NX LG.

Motion 3 XL Low 639450 US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

Exact black glossy US 639450. 14 cu ft, 200 cm skis, 12 in height above crossbar, 52.9 lb published weight, dual-side, PowerClick, 165 lb cargo rating. Page internal height 12 in conflicts with currently linked manual 10 7/8 in. Use the lower manual height for clearance screening. No measured aerodynamic or fuel-use advantage is claimed.

Motion 3 XL 639850 US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

Exact black glossy 639850. 18 cu ft, 200 cm skis, 15 in height above crossbar, dual-side, PowerClick. Page internal height 15 in conflicts with current manual 13 3/4 in. Weight page51 versus manual52.7 is unresolved. No weight advantage is authored.

Current Motion 3 639xxx US instructions

Thule, Manufacturer specification, Reviewed September 20, 2026

Linked current manual5565335001_00. Page4 table XL Low internal79 5/8 x29 x10 7/8 in, XL79 5/8 x29 x13 3/4 in. Page5 weights have inconsistent metric conversions, so no exact weight-based comparative conclusion. Page16 roof load is rack plus box plus cargo. Page4 range21 7/8 to36 5/8 differs slightly from fit chart, conservative overlap is used for new model.

Current Thule roof box fit chart revision6.2

Thule, Manufacturer specification, Reviewed September 20, 2026

Motion XL and XL Low have same52 1/8 in front-clearance threshold using center of front crossbar to roof/hatch meeting point. Chart spread21 13/16 to36 9/16. Force L Sport threshold49 13/16, range21 7/8 to36 5/8. This is more conservative than its product-page rounded49.75.

SkyBox NX Skinny 8007368 US specifications

Yakima, Manufacturer specification, Reviewed September 20, 2026

12 cu ft,195cm skis,43lb,84x26.5x16in, dual-sided access, included locks, removable torque-limiting knob. Official UPC736745073688 matches exact Amazon selected product. Shared manual labels Skinny11 while current page and family table say12. Current12 is used, no physical internal dimension is inferred.

SkyBox NX XXL 8007371 US specifications

Yakima, Manufacturer specification, Reviewed September 20, 2026

22cuft,215cm skis,60.5lb,90.5x36x19in,dual-side,metal handle,removable torque-limiting knob. Official UPC736745073718 matches Amazon selected product despite its retailer inventory identifier in part-number field. Amazon shipping-like80.8lb field is not used.

SkyBox NX current family specifications

Yakima, Manufacturer specification, Reviewed September 20, 2026

Current family table confirms Skinny12cuft and195cm,XL18cuft and195cm,XXL22cuft and215cm. Exact external dimensions and dual-side mechanism.

SkyBox NX current installation and load instructions

Yakima, Manufacturer specification, Reviewed September 20, 2026

1036139C. Both Skinny and XXL24 to40in crossbar spread. Total roof load includes box,rack and cargo and cannot exceed lowest applicable rating. Installation/removal requires a helper. Hardware checks,proper load distribution and actual installed-height measurement remain mandatory. Skinny11label inconsistent with current12cuft specifications.

SkyBox NX exact hatch-clearance chart

Yakima, Manufacturer specification, Reviewed September 20, 2026

Measure front-crossbar center to edge of OPEN hatch across the top of bars. Skinny50in,XL50in,XXL55in. Current dimension/weight chart confirms43lb Skinny,53lb XL and60.5lb XXL. Do not subtract these clearances from Thule values because reference methods differ.

SportRack Sidekick SR7020 US specifications

SportRack, Manufacturer specification, Reviewed September 20, 2026

Exact currentSR7020, not older Thule682100.8cuft,54x25x15.5in,19.85lb,75lb cargo capacity,passenger-side opening,U-bolt mounts.75lb stricter current page rating is retained despite100lb manual statement. Exact primary photo on same page.

SportRack Sidekick SR7020 exact manual

SportRack, Manufacturer specification, Reviewed September 20, 2026

Cover explicitly SIDEKICK CARGO BOX SR7020,document5565082001. Page2 warns against empty travel above40mph and says maintain at least50lb in carrier for higher-speed travel. Requires assembly,U-bolts,passenger-side opening and both locks engaged. Page2 generic100lb capacity conflicts with page75lb, use75lb. No exact spread or hatch threshold from older Thule Sidekick is borrowed.

Thule Force 3 current US instructions

Thule, Manufacturer specification, Reviewed September 20, 2026

Exact 645xxx manual 5565338001. Page 5 gives 165 lb maximum cargo and M 37 lb, L Sport 34 lb, XXL 57 lb. Pages 16 and 17 require roof rack plus box plus payload to obey vehicle limit, secure cargo and remove unused box. No Sidekick-like 50 lb minimum appears in the reviewed instructions. L Sport hatch value 49 3/4 in differs from newer shared fit chart 49 13/16 in, so the stricter chart value is used in new comparisons.

Thule Motion 3 XL 639850 US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

Exact black glossy XL. Height off crossbar 15 in, 18 cu ft, 165 lb cargo, 200 cm skis, 51 lb published empty weight. Product-page internal height and weight conflict with the linked manual, so neither is used as an exact rigid-case fit or lifting-gap claim.

Thule Force 3 XL 645850 US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

Exact black matte XL. Height off crossbar 15.8 in, 18 cu ft, 165 lb cargo, 200 cm skis, 49 lb published empty weight. Linked manual prints 49.6 lb and a different external height. No precise empty-weight advantage or overall-shell-height calculation.

Thule US roof-box fit chart

Thule, Manufacturer specification, Reviewed September 20, 2026

Current chart. Motion 3 XL 639850/51 crossbar spread 21 13/16–36 9/16 in and front clearance 52 1/8 in. Force 3 XL 645850 spread 21 7/8–36 5/8 in and front clearance 53 1/16 in. Thule says the vehicle measurement must exceed the listed clearance.

Thule Motion 3 instructions 5565335001_00

Thule, Manufacturer specification, Reviewed September 20, 2026

Exact 639xxx family with XL table. Pages 4–5 document dimensions, 165 lb cargo limit and a 52.7 lb printed XL weight alongside 23.2 kg, which is not a consistent conversion. Page 16 requires rack + box + payload within the vehicle roof limit. Uses product-page lower weight only for a conservative overload exclusion.

Thule Force 3 instructions 5565338001

Thule, Manufacturer specification, Reviewed September 20, 2026

XL row and load rules. Page 5 prints 49.6 lb empty and 165 lb cargo. Page 16 requires rack + box + payload within the vehicle roof limit. No exact weight subtraction is recommended for maximum payload because current product-page values differ.

Yakima SkyBox NX XL specifications

Yakima, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Force 3 L 645750 US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

16 cu ft, 175 cm skis, 43 lb, 76.8 by 33.3 by 16.8 inches. Current hatch figure greater than 50 5/8 inches is slightly more conservative than the fit PDF.

Force 3 XL 645850 US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

18 cu ft, 200 cm skis, 84.8 by 34.1 inches. Product weight rounds to 49 lb while manual lists 49.6. Height conflicts with manual, so no garage-height advantage is asserted.

Motion 3 XXL Low Black Glossy 639550 US specifications

Thule, Manufacturer specification, Reviewed September 20, 2026

18 cu ft, 215 cm skis, 55.9 lb, 91.3 by 36.2 by 15.2 inches and 13 inches above crossbar. Current product hatch threshold greater than 54 13/16 inches is stricter than fit PDF 54 3/4, so the stricter figure is used.

US cargo-box roof fit and hatch-clearance chart

Thule, Manufacturer specification, Reviewed September 20, 2026

Thule measures front-bar center to the roof meeting the hatch. Force 3 spread 21 7/8 to 36 5/8 inches. Motion 3 spread 21 13/16 to 36 9/16 inches. Hatch values vary by exact size and must be exceeded.

Force 3 installation and load instructions

Thule, Manufacturer specification, Reviewed September 20, 2026

Manual weight L 43 lb, XL 49.6 lb, L Sport 34 lb. Box maximum cargo 165 lb. Total roof load includes racks, box and contents. Clamp bar dimensions and vehicle or rack limits must also be checked.

Motion 3 installation instructions

Thule, Manufacturer specification, Reviewed September 20, 2026

Installation and roof-load guidance for Motion 3. Product-specific payload limit and rack requirements remain separate from volume.

SkyBox NX LG 16 cu ft 8007369

Yakima, Manufacturer specification, Reviewed September 20, 2026

16 cu ft, 175 cm skis, 75.5 by 35 by 16 inches, 24 to 36 inch bar spread, dual-side opening and SKS locks. Product page lists 47 lb while fit guide lists 48 lb.

SkyBox NX XL 18 cu ft 8007370

Yakima, Manufacturer specification, Reviewed September 20, 2026

18 cu ft, 195 cm skis, 53 lb, 84 by 36 by 16.5 inches and 24 to 40 inch bar spread.

SkyBox NX hatch-clearance and dimension guide

Yakima, Manufacturer specification, Reviewed September 20, 2026

Measure front-bar center to edge of OPEN hatch across the top of the crossbars. NX LG minimum 47 inches and 48 lb, NX XL minimum 50 inches and 53 lb. This differs from Thule's roof/hatch reference. BaseLine and Q tower positions must not be moved for extra clearance.

Thule Force 3 XL specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Thule Motion 3 XXL specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Thule Force 3 L specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Thule Pulse 2 L specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Yakima SkyBox NX LG specifications

Yakima, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Thule Motion 3 L specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Thule Force 3 M specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Thule Pulse 2 M specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

Published cargo dimensions, capacity, opening hardware and model-specific fit limits.

Thule Force 3 L Sport US specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

11 cubic feet, 175 cm maximum ski length, 75.2 by 24.7 by 16.7 inches and 34 pounds empty. Values are manufacturer specifications.

Thule Force 3 L Sport Amazon US listing

Amazon US, Product listing, Reviewed September 19, 2026

Exact US model title verified. Amazon displayed 3 new-condition offers with a price and free shipping in the Other sellers block. Featured offer absent. Seller-specific stock and delivery still depend on address.

Thule Force 3 XXL US specifications

Thule, Manufacturer specification, Reviewed September 19, 2026

21 cubic feet, 215 cm maximum ski length, 91.4 by 35.2 by 17.9 inches and 57 pounds empty. Values are manufacturer specifications.

Thule Force 3 XXL Amazon US listing

Amazon US, Product listing, Reviewed September 19, 2026

Exact US model title verified. Amazon displayed 4 new-condition offers with a price and free shipping in the Other sellers block. Featured offer absent. Seller-specific stock and delivery still depend on address.

Thule cargo box fit guide

Thule, Manufacturer specification, Reviewed September 5, 2026

Exact hatch clearance and crossbar fit for Motion 3 XL 639850/639851 and Force 3 XL 645850. Clearance is measured from the front crossbar center to the roof-hatch junction and must exceed the listed minimum.

Thule Motion 3 XL specifications

Thule, Manufacturer specification, Reviewed September 5, 2026

Exact Motion 3 XL Black Glossy identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Force 3 XL specifications

Thule, Manufacturer specification, Reviewed September 5, 2026

Exact Force 3 XL identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Motion 3 XXL specifications

Thule, Manufacturer specification, Reviewed September 1, 2026

Exact Motion 3 XXL Black Glossy identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Force 3 L specifications

Thule, Manufacturer specification, Reviewed September 1, 2026

Exact Force 3 L identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Pulse 2 L specifications

Thule, Manufacturer specification, Reviewed September 1, 2026

Exact Pulse 2 L identity, dimensions, compatibility and operating specifications used by the matcher.

Yakima SkyBox NX LG specifications

Yakima, Manufacturer specification, Reviewed September 1, 2026

Exact SkyBox NX 16 LG identity, dimensions, compatibility and operating specifications used by the matcher.

Yakima SkyBox NX XL specifications

Yakima, Manufacturer specification, Reviewed September 1, 2026

Exact SkyBox NX 18 XL identity, dimensions, compatibility and operating specifications used by the matcher.

SportRack Vista XL specifications

SportRack, Manufacturer specification, Reviewed September 1, 2026

Exact Vista XL SR7018 identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Motion 3 XXL Low specifications

Thule, Manufacturer specification, Reviewed September 1, 2026

Exact Motion 3 XXL Low Black Glossy identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Motion 3 L specifications

Thule, Manufacturer specification, Reviewed September 1, 2026

Exact Motion 3 L Titan Glossy identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Force 3 M specifications

Thule, Manufacturer specification, Reviewed September 1, 2026

Exact Force 3 M identity, dimensions, compatibility and operating specifications used by the matcher.

Thule Pulse 2 M specifications

Thule, Manufacturer specification, Reviewed September 1, 2026

Exact Pulse 2 M identity, dimensions, compatibility and operating specifications used by the matcher.

JEGS 18 Cubic Foot Rooftop Cargo Carrier specifications

JEGS, Manufacturer specification, Reviewed September 1, 2026

Exact 555-90098 identity, dimensions, compatibility and operating specifications used by the matcher.

INNO Wedge 660 Black specifications

INNO, Manufacturer specification, Reviewed September 1, 2026

Exact BRM660BK identity, dimensions, compatibility and operating specifications used by the matcher.

SportRack Horizon L specifications

SportRack, Manufacturer specification, Reviewed September 1, 2026

Exact Horizon L SR7016 identity, dimensions, compatibility and operating specifications used by the matcher.

SportRack Horizon Alpine specifications

SportRack, Manufacturer specification, Reviewed September 1, 2026

Exact Horizon Alpine SR7011 identity, dimensions, compatibility and operating specifications used by the matcher.

INNO Ridge Cargo Box specifications

INNO, Manufacturer specification, Reviewed September 1, 2026

Exact BRA240BK identity, dimensions, compatibility and operating specifications used by the matcher.

Rhino-Rack MasterFit 440L specifications

Rhino-Rack, Manufacturer specification, Reviewed September 1, 2026

Exact RMFT440 identity, dimensions, compatibility and operating specifications used by the matcher.

Rhino-Rack MasterFit 530L specifications

Rhino-Rack, Manufacturer specification, Reviewed September 1, 2026

Exact RMFT530A identity, dimensions, compatibility and operating specifications used by the matcher.

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