Thule 599XTR Big Mouth Bike Rack

Single-bike roof carrier

  • Thule 599XTR Big Mouth™ Bike Rack


  • Thule 599XTR Big Mouth™ Bike Rack

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Our take on the Thule 599XTR Big Mouth™ Bike Rack

by Tara W.

Thule's 599XTR Big Mouth roof carrier attaches to Thule and Yakima load bars, allowing you to transport a single bike. A sculpted wheel tray and support arm allow easy loading and unloading of your bike. The carrier accommodates bike frames up to 3-1/8" in diameter. All Thule equipment passes tough European safety standards for car racks.


  • carries a single bike
  • fits Thule and Yakima load bars
  • sturdy build with sculpted wheel tray and support arm
  • accommodates bike frames up to 3-1/8" in diameter
  • locking accessory sold separately
  • warranty: limited lifetime
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

Download owner's manual

  • Wheel tray
  • Upright carrier
  • Road bike adapter
  • 2 Wheel straps
  • 2 End caps
  • 2 Levers
  • Lock plug
  • T-bolt
  • L-clamp
  • Barrel nut
  • Hex key
  • 2 Carriage bolts
  • Wing knob
  • Washer plate
  • Square nut
  • M6 x 8mm bolt
  • Instructions

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Overview: The Thule 599xtr-Big Mouth is a roof-top mount bike carrier designed to mount to factory, Thule and Yakima (square or round) load bars.

Note: Thule 532 Ride-On Adapter is needed for factory mounting. Xadapt2 required when used on Aero bar.

Capacity: The 599xtr-Big Mouth accommodates one bike and fits frames up to 3-1/8" in diameter (no wheel removal needed).

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For a more in-depth review and enhanced detailed information on the Thule 599XTR Big Mouth™ Bike Rack, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_094599XTR/Thule-599XTR-Big-Mouth-Bike-Rack.html ).

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