Thule Hullavator Pro TH898 - What Are The 35mm and 37mm Bolts For?  

We do not have a CTSV2 that will work on the gas engine option. However the Edge Gas Evolution CTS3 Performance Tuner part #EP39YR will work out for your application.

When using an Edge Evolution programmer such as #EP39YR for your 2008 Chevy Silverado 4.8 liter the option to return the truck to stock configuration is available where you select the tune you want. After the truck is returned to stock you can…

The minimum crossbar spread for the Thule Hullavator Pro Kayak Carrier and Lift Assist with Tie-Downs #TH898 is 24" - meaning from one point on the front crossbar to the same point on the crossbar has to measure at least 24" for…

The Edge Evolution programmer #EP39YR does allow you to select a different tire size and gear ratio. It also allows you to adjust the speed limiter and read and clear diagnostic codes. It does also allow you to disable the active fuel management on…

The Thule Hullavator Pro, part #TH898, does in fact need crossbars that extend 4" - 8" beyond the feet. To use the flush rails on your 2021 Toyota RAV4, you will need a roof rack that has feet that are compatible with the rails.…

There is not a general restriction from Thule that says two Hullavator Kayak Carriers #TH898 can't be used on a Thule roof rack. As long as the crossbars on your Ford Escape have the required length for two sets and a sufficient weight…

The brackets on the Thule Hullavator 897 and the Thule Hullavator 897XT are not the same. The first generation Hullavator was designed to only work with Thule square bars, so it will not work with your Thule WingBar Evo. The updated model, 897XT,…

For your 2018 Honda HR-V to be compatible with the Thule Hullavator Pro Kayak Carrier and Lift Assist with Tie-Downs #TH898, you have to use slightly longer crossbars. The Hullavator requires 4-8 inches overhang to give clearance. In order to give…

Yes, you will be able to use the Thule Hullavator Pro Kayak Roof Rack #TH898 with the Rhino-Rack Vortex Aero roof rack having 59" crossbars. You will need the Crossbars #RRVA150B-2, Legs #RRRLKVA and Fit Kit #DK079 to complete the rack on…

There are two ways to connect the Thule Hullavator to your crossbars, clamp on or use the T-slot. Clamp on requires square bars and T-Track requires a Thule Crossbar. If you have raised side rails on your vehicle, the SteelTop #MPG203 will just…

You'll need an adapter, but yes, the etrailer J-Style Kayak Carrier #e98878 is compatible with the Telos XL Load Assist #MPG351XL. What you will need to add is the Universal Roof Rack Adapter Kit for Malone Telos XL Load Assist #MAL95VR.…

Hello Paul thanks for your question. When installing the Thule Hullavator Pro #TH898 it is completely normal to have 4 leftover bolts. The length of the bolt you use is determined by what kind of crossbar you are using. The 35mm bolts are intended…