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Cusco Rear Cross Bar 2015-2021 WRX / 2015-2021 STI

by Cusco
SKU 6A1-541-AX
Save $30.70 Save $30.70
Original price $307.00
Original price $307.00 - Original price $307.00
Original price $307.00
Current price $276.30
$276.30 - $276.30
Current price $276.30

This Cusco Rear Cross bar is an extra chassis brace that a car could always use. The 4 point bolt in brace is fitted in the trunk and adds rigidity within the chassis. An increase in response can be had with this bar and only basic hand tools are required for installation.

Customer Reviews

Based on 7 reviews
Great product

Great product. After install you will have to do a re tightening of the bolts.


Thank you for your 5 Star Review of the Cusco Rear Cross Bar for the 2015-2021 WRX and 2015-2021 STI. We are thrilled to hear that you find it to be a great product. Your note about re-tightening the bolts post-installation is spot on! Thank you for choosing Subimods for your aftermarket parts.


Looks good

Will need if you build it right


Connecting the huge empty space together in your trunk area, the Cusco Rear Cross Bar increases rigidity and helps support the rear suspension through the entire car! Thank you for your 5 Star Review and added pic!


Solid product!!

That rear strut bar fit my wrx nice and solid!! So compact with my wrx balance !! Thanks Subimods for Cusco products!!


Thank you for your 5 Star Review and added pics! The Cusco Rear Cross Bar adds tons of chassis rigidity to the rear end of your WRX/STI! It is compact as you said so you don't lose a bunch of trunk space when adding it. Enjoy the added handling!


Max Mayer
Cusco Rear Crossbar

Performs the same way as any other type of chassis stiffener. Looks cool, but functionality wise its great. Will really only make a difference overall if you do the rest of the cusco stuff, which I have. My car is an autocross car so its stiff as a board. Cusco quality, fit and finish great as always. Directions blow as always, unless you speak Japanese.


Thank you for the 5 Star Review! Cusco makes some of the best chassis stiffening products on the market! Whether you daily drive your WRX/STI or autocross like your self the Cusco quality products will help with stiffening your chassis giving you better handling and feel for the road or track!


Colin Delaney
a major Stiffy

Solid product. It really stiffened up the back end. I did the rear cross member and then a week later did the Whiteline sway bar kit upgrade. I highly recommend doing both, as the rear cross brace will stiffen the body, but I found the body roll was much more pronounced.

Overall, well worth it!


The Cusco Rear Cross Bar is designed as an extra chassis brace to stiffen up the rear end of the WRX/STI! It is never good to have the body tweaking in different directions during spirited driving! This cross bar is a simple installation to help prevent that from happening! Thank you for the 5 Star Review!


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