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Reverse Engineering the TG-RR GR Yaris: Part 2 – Suspension and Aero

2026-02-18 by tonic

This time, we’re diving into the suspension and aero mods. It looks like the TG-RR is running Cusco upper (1) and lower front (2) control arms. However, the upper arms appear to be modified. Instead of the usual threaded inserts for camber adjustment, they’ve CNC-ed a new upright-side end (3) that accepts shims. This could … Read more

Categories reverse engineering

Reverse Engineering the TG-RR GR Yaris: Part 1 – Engine Bay

2026-01-14 by tonic

Always love seeing what tweaks Toyota makes to their GR Yaris when they go racing. I’ve been digging through photos and videos of the TG-RR GR Yaris from the 2025 Nürburgring 24h to see what’s different. I’m mainly interested in the stuff we can actually adapt for our own cars to improve reliability and performance … Read more

Categories reverse engineering
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